/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 -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 [2023-08-26 20:48:27,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 20:48:27,630 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 20:48:27,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 20:48:27,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 20:48:27,668 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 20:48:27,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 20:48:27,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 20:48:27,670 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 20:48:27,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 20:48:27,673 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 20:48:27,674 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 20:48:27,674 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 20:48:27,675 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 20:48:27,675 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 20:48:27,675 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 20:48:27,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 20:48:27,676 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 20:48:27,676 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 20:48:27,676 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 20:48:27,676 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 20:48:27,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 20:48:27,677 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 20:48:27,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 20:48:27,678 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 20:48:27,678 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 20:48:27,678 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 20:48:27,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 20:48:27,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 20:48:27,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 20:48:27,680 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 20:48:27,680 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 20:48:27,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 20:48:27,680 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 20:48:27,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 20:48:27,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 20:48:27,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 20:48:27,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 20:48:27,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 20:48:27,986 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 20:48:27,987 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 20:48:27,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-1.i [2023-08-26 20:48:29,164 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 20:48:29,459 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 20:48:29,460 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i [2023-08-26 20:48:29,479 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ecd3f22d/37cf33e7d3d74b8b8ef4592029a628fe/FLAG2b5c523b8 [2023-08-26 20:48:29,494 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ecd3f22d/37cf33e7d3d74b8b8ef4592029a628fe [2023-08-26 20:48:29,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 20:48:29,500 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 20:48:29,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 20:48:29,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 20:48:29,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 20:48:29,507 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:48:29" (1/1) ... [2023-08-26 20:48:29,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2669f215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:29, skipping insertion in model container [2023-08-26 20:48:29,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:48:29" (1/1) ... [2023-08-26 20:48:29,559 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 20:48:29,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 20:48:29,981 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 20:48:30,016 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 20:48:30,017 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 20:48:30,035 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [753] [2023-08-26 20:48:30,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 20:48:30,142 INFO L206 MainTranslator]: Completed translation [2023-08-26 20:48:30,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:30 WrapperNode [2023-08-26 20:48:30,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 20:48:30,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 20:48:30,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 20:48:30,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 20:48:30,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:30" (1/1) ... [2023-08-26 20:48:30,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:30" (1/1) ... [2023-08-26 20:48:30,199 INFO L138 Inliner]: procedures = 277, calls = 40, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 170 [2023-08-26 20:48:30,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 20:48:30,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 20:48:30,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 20:48:30,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 20:48:30,213 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:30" (1/1) ... [2023-08-26 20:48:30,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:30" (1/1) ... [2023-08-26 20:48:30,216 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:30" (1/1) ... [2023-08-26 20:48:30,216 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:30" (1/1) ... [2023-08-26 20:48:30,222 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:30" (1/1) ... [2023-08-26 20:48:30,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:30" (1/1) ... [2023-08-26 20:48:30,243 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:30" (1/1) ... [2023-08-26 20:48:30,244 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:30" (1/1) ... [2023-08-26 20:48:30,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 20:48:30,248 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 20:48:30,248 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 20:48:30,248 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 20:48:30,249 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:30" (1/1) ... [2023-08-26 20:48:30,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 20:48:30,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:48:30,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 20:48:30,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 20:48:30,318 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-26 20:48:30,319 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-26 20:48:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-26 20:48:30,319 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-26 20:48:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 20:48:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 20:48:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 20:48:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 20:48:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 20:48:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 20:48:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 20:48:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 20:48:30,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 20:48:30,321 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 20:48:30,441 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 20:48:30,443 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 20:48:30,700 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 20:48:30,710 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 20:48:30,711 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-26 20:48:30,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:48:30 BoogieIcfgContainer [2023-08-26 20:48:30,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 20:48:30,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 20:48:30,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 20:48:30,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 20:48:30,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:48:29" (1/3) ... [2023-08-26 20:48:30,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b39213e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:48:30, skipping insertion in model container [2023-08-26 20:48:30,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:30" (2/3) ... [2023-08-26 20:48:30,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b39213e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:48:30, skipping insertion in model container [2023-08-26 20:48:30,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:48:30" (3/3) ... [2023-08-26 20:48:30,719 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2023-08-26 20:48:30,735 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 20:48:30,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-26 20:48:30,735 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 20:48:30,815 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 20:48:30,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 182 transitions, 380 flow [2023-08-26 20:48:30,905 INFO L124 PetriNetUnfolderBase]: 12/180 cut-off events. [2023-08-26 20:48:30,905 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 20:48:30,912 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. [2023-08-26 20:48:30,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 182 transitions, 380 flow [2023-08-26 20:48:30,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 171 transitions, 351 flow [2023-08-26 20:48:30,932 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 20:48:30,945 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 171 transitions, 351 flow [2023-08-26 20:48:30,952 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 171 transitions, 351 flow [2023-08-26 20:48:30,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 171 transitions, 351 flow [2023-08-26 20:48:31,007 INFO L124 PetriNetUnfolderBase]: 12/171 cut-off events. [2023-08-26 20:48:31,007 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 20:48:31,014 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. [2023-08-26 20:48:31,019 INFO L119 LiptonReduction]: Number of co-enabled transitions 10550 [2023-08-26 20:48:34,750 INFO L134 LiptonReduction]: Checked pairs total: 14717 [2023-08-26 20:48:34,751 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-08-26 20:48:34,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 20:48:34,768 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;@273d3481, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 20:48:34,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-26 20:48:34,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 20:48:34,773 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-26 20:48:34,773 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 20:48:34,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:34,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 20:48:34,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:34,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:34,778 INFO L85 PathProgramCache]: Analyzing trace with hash 731787429, now seen corresponding path program 1 times [2023-08-26 20:48:34,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:34,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173488828] [2023-08-26 20:48:34,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:34,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:35,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:35,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173488828] [2023-08-26 20:48:35,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173488828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:35,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:35,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:35,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208584646] [2023-08-26 20:48:35,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:35,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:35,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:35,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:35,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:35,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 351 [2023-08-26 20:48:35,086 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) [2023-08-26 20:48:35,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:35,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 351 [2023-08-26 20:48:35,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:35,402 INFO L124 PetriNetUnfolderBase]: 1600/2589 cut-off events. [2023-08-26 20:48:35,402 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-08-26 20:48:35,405 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. [2023-08-26 20:48:35,419 INFO L140 encePairwiseOnDemand]: 342/351 looper letters, 69 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-08-26 20:48:35,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 74 transitions, 309 flow [2023-08-26 20:48:35,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:35,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2023-08-26 20:48:35,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270655270655271 [2023-08-26 20:48:35,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 555 transitions. [2023-08-26 20:48:35,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 555 transitions. [2023-08-26 20:48:35,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:35,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 555 transitions. [2023-08-26 20:48:35,441 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) [2023-08-26 20:48:35,446 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) [2023-08-26 20:48:35,446 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) [2023-08-26 20:48:35,448 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 93 flow. Second operand 3 states and 555 transitions. [2023-08-26 20:48:35,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 74 transitions, 309 flow [2023-08-26 20:48:35,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 301 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 20:48:35,453 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 126 flow [2023-08-26 20:48:35,455 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} [2023-08-26 20:48:35,458 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2023-08-26 20:48:35,458 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 126 flow [2023-08-26 20:48:35,458 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) [2023-08-26 20:48:35,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:35,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:35,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 20:48:35,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:35,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash 236537514, now seen corresponding path program 1 times [2023-08-26 20:48:35,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:35,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909683962] [2023-08-26 20:48:35,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:35,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:35,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:35,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909683962] [2023-08-26 20:48:35,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909683962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:35,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:35,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:35,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231819800] [2023-08-26 20:48:35,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:35,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:35,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:35,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:35,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:35,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 351 [2023-08-26 20:48:35,571 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) [2023-08-26 20:48:35,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:35,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 351 [2023-08-26 20:48:35,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:35,868 INFO L124 PetriNetUnfolderBase]: 1716/2801 cut-off events. [2023-08-26 20:48:35,868 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2023-08-26 20:48:35,872 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. [2023-08-26 20:48:35,885 INFO L140 encePairwiseOnDemand]: 348/351 looper letters, 63 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-26 20:48:35,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 305 flow [2023-08-26 20:48:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2023-08-26 20:48:35,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299145299145299 [2023-08-26 20:48:35,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2023-08-26 20:48:35,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2023-08-26 20:48:35,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:35,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2023-08-26 20:48:35,892 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) [2023-08-26 20:48:35,894 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) [2023-08-26 20:48:35,895 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) [2023-08-26 20:48:35,895 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 126 flow. Second operand 3 states and 558 transitions. [2023-08-26 20:48:35,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 305 flow [2023-08-26 20:48:35,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 295 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 20:48:35,903 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 130 flow [2023-08-26 20:48:35,903 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} [2023-08-26 20:48:35,903 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-08-26 20:48:35,904 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 130 flow [2023-08-26 20:48:35,904 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) [2023-08-26 20:48:35,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:35,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:35,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 20:48:35,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:35,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:35,912 INFO L85 PathProgramCache]: Analyzing trace with hash 236506715, now seen corresponding path program 1 times [2023-08-26 20:48:35,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:35,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225990883] [2023-08-26 20:48:35,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:35,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:35,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:35,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225990883] [2023-08-26 20:48:35,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225990883] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:35,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:35,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:35,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71885880] [2023-08-26 20:48:35,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:35,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:35,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:35,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:36,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:36,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-26 20:48:36,002 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) [2023-08-26 20:48:36,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:36,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-26 20:48:36,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:36,388 INFO L124 PetriNetUnfolderBase]: 2514/4177 cut-off events. [2023-08-26 20:48:36,389 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2023-08-26 20:48:36,393 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. [2023-08-26 20:48:36,410 INFO L140 encePairwiseOnDemand]: 346/351 looper letters, 78 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-26 20:48:36,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 81 transitions, 386 flow [2023-08-26 20:48:36,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-08-26 20:48:36,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375118708452041 [2023-08-26 20:48:36,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-08-26 20:48:36,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-08-26 20:48:36,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:36,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-08-26 20:48:36,414 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) [2023-08-26 20:48:36,416 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) [2023-08-26 20:48:36,417 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) [2023-08-26 20:48:36,417 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 130 flow. Second operand 3 states and 566 transitions. [2023-08-26 20:48:36,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 81 transitions, 386 flow [2023-08-26 20:48:36,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 81 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:36,419 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 144 flow [2023-08-26 20:48:36,420 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} [2023-08-26 20:48:36,420 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2023-08-26 20:48:36,420 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 144 flow [2023-08-26 20:48:36,421 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) [2023-08-26 20:48:36,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:36,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:36,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 20:48:36,421 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:36,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:36,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2104264202, now seen corresponding path program 1 times [2023-08-26 20:48:36,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:36,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835609674] [2023-08-26 20:48:36,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:36,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:36,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:36,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835609674] [2023-08-26 20:48:36,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835609674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:36,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:36,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:36,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923267552] [2023-08-26 20:48:36,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:36,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:36,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:36,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:36,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:36,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-26 20:48:36,476 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) [2023-08-26 20:48:36,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:36,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-26 20:48:36,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:36,843 INFO L124 PetriNetUnfolderBase]: 2712/4425 cut-off events. [2023-08-26 20:48:36,843 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2023-08-26 20:48:36,889 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. [2023-08-26 20:48:36,907 INFO L140 encePairwiseOnDemand]: 348/351 looper letters, 67 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-08-26 20:48:36,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 368 flow [2023-08-26 20:48:36,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:36,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:36,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2023-08-26 20:48:36,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251661918328585 [2023-08-26 20:48:36,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2023-08-26 20:48:36,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2023-08-26 20:48:36,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:36,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2023-08-26 20:48:36,912 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) [2023-08-26 20:48:36,913 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) [2023-08-26 20:48:36,914 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) [2023-08-26 20:48:36,914 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 144 flow. Second operand 3 states and 553 transitions. [2023-08-26 20:48:36,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 368 flow [2023-08-26 20:48:36,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:36,918 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 162 flow [2023-08-26 20:48:36,919 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} [2023-08-26 20:48:36,920 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2023-08-26 20:48:36,920 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 162 flow [2023-08-26 20:48:36,921 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) [2023-08-26 20:48:36,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:36,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:36,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 20:48:36,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:36,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:36,921 INFO L85 PathProgramCache]: Analyzing trace with hash 807682009, now seen corresponding path program 1 times [2023-08-26 20:48:36,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:36,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854942797] [2023-08-26 20:48:36,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:36,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:36,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:37,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854942797] [2023-08-26 20:48:37,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854942797] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:37,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:37,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:37,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511011484] [2023-08-26 20:48:37,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:37,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:37,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:37,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:37,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:37,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-26 20:48:37,002 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) [2023-08-26 20:48:37,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:37,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-26 20:48:37,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:37,358 INFO L124 PetriNetUnfolderBase]: 2802/4545 cut-off events. [2023-08-26 20:48:37,359 INFO L125 PetriNetUnfolderBase]: For 1126/1126 co-relation queries the response was YES. [2023-08-26 20:48:37,366 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. [2023-08-26 20:48:37,387 INFO L140 encePairwiseOnDemand]: 346/351 looper letters, 76 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-26 20:48:37,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 79 transitions, 413 flow [2023-08-26 20:48:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-08-26 20:48:37,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533713200379867 [2023-08-26 20:48:37,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-08-26 20:48:37,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-08-26 20:48:37,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:37,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-08-26 20:48:37,392 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) [2023-08-26 20:48:37,393 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) [2023-08-26 20:48:37,394 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) [2023-08-26 20:48:37,394 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 162 flow. Second operand 3 states and 562 transitions. [2023-08-26 20:48:37,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 79 transitions, 413 flow [2023-08-26 20:48:37,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 79 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:37,401 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 174 flow [2023-08-26 20:48:37,401 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} [2023-08-26 20:48:37,401 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2023-08-26 20:48:37,402 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 174 flow [2023-08-26 20:48:37,402 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) [2023-08-26 20:48:37,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:37,402 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:37,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 20:48:37,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:37,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:37,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1570101446, now seen corresponding path program 1 times [2023-08-26 20:48:37,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:37,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260247181] [2023-08-26 20:48:37,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:37,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 20:48:37,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:37,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260247181] [2023-08-26 20:48:37,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260247181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:37,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:37,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:37,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241055402] [2023-08-26 20:48:37,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:37,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:37,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:37,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:37,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:37,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-26 20:48:37,460 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) [2023-08-26 20:48:37,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:37,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-26 20:48:37,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:37,786 INFO L124 PetriNetUnfolderBase]: 2519/4206 cut-off events. [2023-08-26 20:48:37,786 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2023-08-26 20:48:37,794 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. [2023-08-26 20:48:37,809 INFO L140 encePairwiseOnDemand]: 347/351 looper letters, 67 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-08-26 20:48:37,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 403 flow [2023-08-26 20:48:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 550 transitions. [2023-08-26 20:48:37,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223171889838556 [2023-08-26 20:48:37,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 550 transitions. [2023-08-26 20:48:37,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 550 transitions. [2023-08-26 20:48:37,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:37,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 550 transitions. [2023-08-26 20:48:37,813 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) [2023-08-26 20:48:37,815 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) [2023-08-26 20:48:37,816 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) [2023-08-26 20:48:37,816 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 174 flow. Second operand 3 states and 550 transitions. [2023-08-26 20:48:37,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 403 flow [2023-08-26 20:48:37,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:37,820 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 184 flow [2023-08-26 20:48:37,820 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} [2023-08-26 20:48:37,821 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2023-08-26 20:48:37,821 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 184 flow [2023-08-26 20:48:37,821 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) [2023-08-26 20:48:37,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:37,821 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:37,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 20:48:37,822 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:37,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:37,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1570101474, now seen corresponding path program 1 times [2023-08-26 20:48:37,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:37,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586364391] [2023-08-26 20:48:37,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:37,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:37,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:37,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586364391] [2023-08-26 20:48:37,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586364391] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:37,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:37,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:37,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531864996] [2023-08-26 20:48:37,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:37,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:37,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:37,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:37,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:37,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-26 20:48:37,857 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) [2023-08-26 20:48:37,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:37,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-26 20:48:37,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:38,156 INFO L124 PetriNetUnfolderBase]: 2397/4000 cut-off events. [2023-08-26 20:48:38,156 INFO L125 PetriNetUnfolderBase]: For 2139/2139 co-relation queries the response was YES. [2023-08-26 20:48:38,163 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. [2023-08-26 20:48:38,177 INFO L140 encePairwiseOnDemand]: 349/351 looper letters, 69 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-26 20:48:38,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 407 flow [2023-08-26 20:48:38,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:38,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:38,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2023-08-26 20:48:38,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204178537511871 [2023-08-26 20:48:38,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2023-08-26 20:48:38,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2023-08-26 20:48:38,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:38,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2023-08-26 20:48:38,181 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) [2023-08-26 20:48:38,183 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) [2023-08-26 20:48:38,183 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) [2023-08-26 20:48:38,183 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 184 flow. Second operand 3 states and 548 transitions. [2023-08-26 20:48:38,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 407 flow [2023-08-26 20:48:38,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 403 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:38,188 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 178 flow [2023-08-26 20:48:38,189 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} [2023-08-26 20:48:38,189 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2023-08-26 20:48:38,189 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 178 flow [2023-08-26 20:48:38,190 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) [2023-08-26 20:48:38,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:38,190 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:38,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 20:48:38,190 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:38,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:38,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1248618555, now seen corresponding path program 1 times [2023-08-26 20:48:38,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:38,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124937644] [2023-08-26 20:48:38,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:38,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:38,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:38,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124937644] [2023-08-26 20:48:38,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124937644] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:48:38,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159645049] [2023-08-26 20:48:38,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:38,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:38,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:48:38,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 20:48:38,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 20:48:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:38,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 20:48:38,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:48:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:38,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 20:48:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:38,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159645049] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 20:48:38,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 20:48:38,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-26 20:48:38,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348739625] [2023-08-26 20:48:38,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 20:48:38,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 20:48:38,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:38,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 20:48:38,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-26 20:48:38,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 351 [2023-08-26 20:48:38,463 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) [2023-08-26 20:48:38,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:38,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 351 [2023-08-26 20:48:38,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:39,409 INFO L124 PetriNetUnfolderBase]: 4759/7812 cut-off events. [2023-08-26 20:48:39,410 INFO L125 PetriNetUnfolderBase]: For 3425/3425 co-relation queries the response was YES. [2023-08-26 20:48:39,422 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. [2023-08-26 20:48:39,450 INFO L140 encePairwiseOnDemand]: 341/351 looper letters, 264 selfloop transitions, 42 changer transitions 0/307 dead transitions. [2023-08-26 20:48:39,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 307 transitions, 1694 flow [2023-08-26 20:48:39,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 20:48:39,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 20:48:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2738 transitions. [2023-08-26 20:48:39,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48753561253561256 [2023-08-26 20:48:39,458 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2738 transitions. [2023-08-26 20:48:39,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2738 transitions. [2023-08-26 20:48:39,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:39,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2738 transitions. [2023-08-26 20:48:39,465 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) [2023-08-26 20:48:39,473 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) [2023-08-26 20:48:39,474 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) [2023-08-26 20:48:39,475 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 178 flow. Second operand 16 states and 2738 transitions. [2023-08-26 20:48:39,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 307 transitions, 1694 flow [2023-08-26 20:48:39,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 307 transitions, 1687 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:39,486 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 499 flow [2023-08-26 20:48:39,487 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} [2023-08-26 20:48:39,487 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2023-08-26 20:48:39,487 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 499 flow [2023-08-26 20:48:39,488 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) [2023-08-26 20:48:39,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:39,488 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:39,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 20:48:39,696 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 [2023-08-26 20:48:39,697 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:39,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:39,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1624937682, now seen corresponding path program 1 times [2023-08-26 20:48:39,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:39,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487659663] [2023-08-26 20:48:39,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:39,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:39,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 20:48:39,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:39,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487659663] [2023-08-26 20:48:39,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487659663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:39,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:39,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:48:39,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849168848] [2023-08-26 20:48:39,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:39,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 20:48:39,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:39,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 20:48:39,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 20:48:39,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 351 [2023-08-26 20:48:39,816 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) [2023-08-26 20:48:39,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:39,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 351 [2023-08-26 20:48:39,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:40,617 INFO L124 PetriNetUnfolderBase]: 5651/9290 cut-off events. [2023-08-26 20:48:40,617 INFO L125 PetriNetUnfolderBase]: For 10548/10548 co-relation queries the response was YES. [2023-08-26 20:48:40,640 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. [2023-08-26 20:48:40,686 INFO L140 encePairwiseOnDemand]: 341/351 looper letters, 115 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2023-08-26 20:48:40,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 145 transitions, 1052 flow [2023-08-26 20:48:40,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 20:48:40,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 20:48:40,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 705 transitions. [2023-08-26 20:48:40,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021367521367521 [2023-08-26 20:48:40,688 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 705 transitions. [2023-08-26 20:48:40,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 705 transitions. [2023-08-26 20:48:40,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:40,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 705 transitions. [2023-08-26 20:48:40,691 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) [2023-08-26 20:48:40,693 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) [2023-08-26 20:48:40,693 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) [2023-08-26 20:48:40,694 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 499 flow. Second operand 4 states and 705 transitions. [2023-08-26 20:48:40,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 145 transitions, 1052 flow [2023-08-26 20:48:40,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 145 transitions, 998 flow, removed 26 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:40,759 INFO L231 Difference]: Finished difference. Result has 73 places, 91 transitions, 601 flow [2023-08-26 20:48:40,759 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} [2023-08-26 20:48:40,760 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2023-08-26 20:48:40,760 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 91 transitions, 601 flow [2023-08-26 20:48:40,761 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) [2023-08-26 20:48:40,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:40,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:40,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 20:48:40,761 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:40,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1568941201, now seen corresponding path program 1 times [2023-08-26 20:48:40,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:40,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846271766] [2023-08-26 20:48:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:40,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:40,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:40,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:40,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846271766] [2023-08-26 20:48:40,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846271766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:40,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:40,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:48:40,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760188719] [2023-08-26 20:48:40,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:40,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:40,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:40,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:40,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:40,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 351 [2023-08-26 20:48:40,844 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) [2023-08-26 20:48:40,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:40,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 351 [2023-08-26 20:48:40,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:41,094 INFO L124 PetriNetUnfolderBase]: 1713/3112 cut-off events. [2023-08-26 20:48:41,094 INFO L125 PetriNetUnfolderBase]: For 3158/3158 co-relation queries the response was YES. [2023-08-26 20:48:41,103 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. [2023-08-26 20:48:41,113 INFO L140 encePairwiseOnDemand]: 344/351 looper letters, 64 selfloop transitions, 9 changer transitions 0/73 dead transitions. [2023-08-26 20:48:41,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 544 flow [2023-08-26 20:48:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:41,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-08-26 20:48:41,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985754985754986 [2023-08-26 20:48:41,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-08-26 20:48:41,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-08-26 20:48:41,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:41,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-08-26 20:48:41,117 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) [2023-08-26 20:48:41,118 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) [2023-08-26 20:48:41,119 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) [2023-08-26 20:48:41,119 INFO L175 Difference]: Start difference. First operand has 73 places, 91 transitions, 601 flow. Second operand 3 states and 525 transitions. [2023-08-26 20:48:41,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 544 flow [2023-08-26 20:48:41,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 511 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-26 20:48:41,137 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 339 flow [2023-08-26 20:48:41,137 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} [2023-08-26 20:48:41,137 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 21 predicate places. [2023-08-26 20:48:41,137 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 339 flow [2023-08-26 20:48:41,138 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) [2023-08-26 20:48:41,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:41,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:41,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 20:48:41,138 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:41,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:41,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1810976696, now seen corresponding path program 1 times [2023-08-26 20:48:41,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:41,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481098870] [2023-08-26 20:48:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:41,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:41,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:41,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481098870] [2023-08-26 20:48:41,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481098870] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:41,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:41,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:48:41,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263740206] [2023-08-26 20:48:41,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:41,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 20:48:41,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:41,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 20:48:41,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 20:48:41,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 351 [2023-08-26 20:48:41,234 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) [2023-08-26 20:48:41,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:41,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 351 [2023-08-26 20:48:41,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:41,620 INFO L124 PetriNetUnfolderBase]: 1875/3442 cut-off events. [2023-08-26 20:48:41,620 INFO L125 PetriNetUnfolderBase]: For 3127/3127 co-relation queries the response was YES. [2023-08-26 20:48:41,627 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. [2023-08-26 20:48:41,637 INFO L140 encePairwiseOnDemand]: 342/351 looper letters, 105 selfloop transitions, 15 changer transitions 0/121 dead transitions. [2023-08-26 20:48:41,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 121 transitions, 835 flow [2023-08-26 20:48:41,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 20:48:41,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 20:48:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 863 transitions. [2023-08-26 20:48:41,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49173789173789173 [2023-08-26 20:48:41,640 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 863 transitions. [2023-08-26 20:48:41,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 863 transitions. [2023-08-26 20:48:41,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:41,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 863 transitions. [2023-08-26 20:48:41,642 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) [2023-08-26 20:48:41,645 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) [2023-08-26 20:48:41,645 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) [2023-08-26 20:48:41,645 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 339 flow. Second operand 5 states and 863 transitions. [2023-08-26 20:48:41,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 121 transitions, 835 flow [2023-08-26 20:48:41,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 121 transitions, 816 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:41,652 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 424 flow [2023-08-26 20:48:41,652 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} [2023-08-26 20:48:41,653 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-08-26 20:48:41,653 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 424 flow [2023-08-26 20:48:41,653 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) [2023-08-26 20:48:41,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:41,654 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-26 20:48:41,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 20:48:41,654 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:41,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash -57190909, now seen corresponding path program 1 times [2023-08-26 20:48:41,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:41,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822274901] [2023-08-26 20:48:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:41,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 20:48:41,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:41,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822274901] [2023-08-26 20:48:41,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822274901] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:41,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:41,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:41,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370259138] [2023-08-26 20:48:41,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:41,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:41,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:41,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:41,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:41,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-26 20:48:41,702 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) [2023-08-26 20:48:41,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:41,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-26 20:48:41,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:41,954 INFO L124 PetriNetUnfolderBase]: 1660/3019 cut-off events. [2023-08-26 20:48:41,954 INFO L125 PetriNetUnfolderBase]: For 4407/4411 co-relation queries the response was YES. [2023-08-26 20:48:41,962 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. [2023-08-26 20:48:41,971 INFO L140 encePairwiseOnDemand]: 347/351 looper letters, 91 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-26 20:48:41,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 96 transitions, 799 flow [2023-08-26 20:48:41,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:41,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:41,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-08-26 20:48:41,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5194681861348528 [2023-08-26 20:48:41,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-08-26 20:48:41,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-08-26 20:48:41,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:41,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-08-26 20:48:41,975 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) [2023-08-26 20:48:41,977 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) [2023-08-26 20:48:41,977 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) [2023-08-26 20:48:41,977 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 424 flow. Second operand 3 states and 547 transitions. [2023-08-26 20:48:41,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 96 transitions, 799 flow [2023-08-26 20:48:41,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 761 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-26 20:48:41,987 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 410 flow [2023-08-26 20:48:41,987 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} [2023-08-26 20:48:41,987 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-08-26 20:48:41,987 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 410 flow [2023-08-26 20:48:41,988 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) [2023-08-26 20:48:41,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:41,988 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-26 20:48:41,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 20:48:41,988 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:41,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:41,988 INFO L85 PathProgramCache]: Analyzing trace with hash -57190908, now seen corresponding path program 1 times [2023-08-26 20:48:41,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:41,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138663209] [2023-08-26 20:48:41,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:41,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:42,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:42,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138663209] [2023-08-26 20:48:42,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138663209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:42,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:42,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:42,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241468759] [2023-08-26 20:48:42,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:42,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:42,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:42,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:42,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:42,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-26 20:48:42,032 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) [2023-08-26 20:48:42,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:42,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-26 20:48:42,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:42,274 INFO L124 PetriNetUnfolderBase]: 1493/2688 cut-off events. [2023-08-26 20:48:42,275 INFO L125 PetriNetUnfolderBase]: For 3640/3652 co-relation queries the response was YES. [2023-08-26 20:48:42,281 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. [2023-08-26 20:48:42,288 INFO L140 encePairwiseOnDemand]: 349/351 looper letters, 72 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-08-26 20:48:42,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 594 flow [2023-08-26 20:48:42,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:42,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 534 transitions. [2023-08-26 20:48:42,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071225071225072 [2023-08-26 20:48:42,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 534 transitions. [2023-08-26 20:48:42,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 534 transitions. [2023-08-26 20:48:42,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:42,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 534 transitions. [2023-08-26 20:48:42,291 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) [2023-08-26 20:48:42,293 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) [2023-08-26 20:48:42,293 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) [2023-08-26 20:48:42,293 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 410 flow. Second operand 3 states and 534 transitions. [2023-08-26 20:48:42,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 594 flow [2023-08-26 20:48:42,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:42,300 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 403 flow [2023-08-26 20:48:42,300 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} [2023-08-26 20:48:42,301 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-08-26 20:48:42,301 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 403 flow [2023-08-26 20:48:42,301 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) [2023-08-26 20:48:42,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:42,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:42,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 20:48:42,301 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:42,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:42,302 INFO L85 PathProgramCache]: Analyzing trace with hash -18492030, now seen corresponding path program 1 times [2023-08-26 20:48:42,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:42,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329416914] [2023-08-26 20:48:42,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:42,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:42,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:42,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329416914] [2023-08-26 20:48:42,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329416914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:42,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:42,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-26 20:48:42,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831476076] [2023-08-26 20:48:42,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:42,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 20:48:42,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:42,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 20:48:42,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-26 20:48:42,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 351 [2023-08-26 20:48:42,845 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) [2023-08-26 20:48:42,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:42,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 351 [2023-08-26 20:48:42,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:43,617 INFO L124 PetriNetUnfolderBase]: 2093/3753 cut-off events. [2023-08-26 20:48:43,617 INFO L125 PetriNetUnfolderBase]: For 4709/4709 co-relation queries the response was YES. [2023-08-26 20:48:43,625 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. [2023-08-26 20:48:43,638 INFO L140 encePairwiseOnDemand]: 341/351 looper letters, 145 selfloop transitions, 11 changer transitions 0/157 dead transitions. [2023-08-26 20:48:43,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 157 transitions, 1139 flow [2023-08-26 20:48:43,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 20:48:43,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 20:48:43,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1324 transitions. [2023-08-26 20:48:43,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911997467553025 [2023-08-26 20:48:43,643 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1324 transitions. [2023-08-26 20:48:43,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1324 transitions. [2023-08-26 20:48:43,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:43,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1324 transitions. [2023-08-26 20:48:43,647 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) [2023-08-26 20:48:43,652 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) [2023-08-26 20:48:43,652 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) [2023-08-26 20:48:43,653 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 403 flow. Second operand 9 states and 1324 transitions. [2023-08-26 20:48:43,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 157 transitions, 1139 flow [2023-08-26 20:48:43,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 157 transitions, 1138 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:43,663 INFO L231 Difference]: Finished difference. Result has 82 places, 73 transitions, 481 flow [2023-08-26 20:48:43,664 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} [2023-08-26 20:48:43,664 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2023-08-26 20:48:43,664 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 481 flow [2023-08-26 20:48:43,665 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) [2023-08-26 20:48:43,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:43,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:43,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 20:48:43,666 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:43,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:43,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1873595586, now seen corresponding path program 2 times [2023-08-26 20:48:43,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:43,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603827422] [2023-08-26 20:48:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:43,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:44,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:44,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603827422] [2023-08-26 20:48:44,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603827422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:44,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:44,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-26 20:48:44,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551329578] [2023-08-26 20:48:44,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:44,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 20:48:44,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:44,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 20:48:44,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-26 20:48:44,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 351 [2023-08-26 20:48:44,274 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) [2023-08-26 20:48:44,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:44,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 351 [2023-08-26 20:48:44,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:45,101 INFO L124 PetriNetUnfolderBase]: 2592/4636 cut-off events. [2023-08-26 20:48:45,102 INFO L125 PetriNetUnfolderBase]: For 5845/5845 co-relation queries the response was YES. [2023-08-26 20:48:45,113 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. [2023-08-26 20:48:45,127 INFO L140 encePairwiseOnDemand]: 342/351 looper letters, 144 selfloop transitions, 16 changer transitions 0/161 dead transitions. [2023-08-26 20:48:45,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 161 transitions, 1233 flow [2023-08-26 20:48:45,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 20:48:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 20:48:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1324 transitions. [2023-08-26 20:48:45,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911997467553025 [2023-08-26 20:48:45,131 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1324 transitions. [2023-08-26 20:48:45,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1324 transitions. [2023-08-26 20:48:45,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:45,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1324 transitions. [2023-08-26 20:48:45,135 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) [2023-08-26 20:48:45,139 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) [2023-08-26 20:48:45,139 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) [2023-08-26 20:48:45,140 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 481 flow. Second operand 9 states and 1324 transitions. [2023-08-26 20:48:45,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 161 transitions, 1233 flow [2023-08-26 20:48:45,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 161 transitions, 1233 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 20:48:45,154 INFO L231 Difference]: Finished difference. Result has 94 places, 79 transitions, 578 flow [2023-08-26 20:48:45,154 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} [2023-08-26 20:48:45,155 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 50 predicate places. [2023-08-26 20:48:45,155 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 79 transitions, 578 flow [2023-08-26 20:48:45,155 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) [2023-08-26 20:48:45,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:45,155 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:45,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 20:48:45,156 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:45,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:45,156 INFO L85 PathProgramCache]: Analyzing trace with hash 140700202, now seen corresponding path program 1 times [2023-08-26 20:48:45,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:45,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025195592] [2023-08-26 20:48:45,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:45,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:45,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:45,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025195592] [2023-08-26 20:48:45,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025195592] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:48:45,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086638013] [2023-08-26 20:48:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:45,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:45,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:48:45,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 20:48:45,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 20:48:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:45,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 20:48:45,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:48:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 20:48:45,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 20:48:45,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086638013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:45,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 20:48:45,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-08-26 20:48:45,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008792302] [2023-08-26 20:48:45,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:45,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 20:48:45,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:45,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 20:48:45,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-26 20:48:45,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 351 [2023-08-26 20:48:45,452 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) [2023-08-26 20:48:45,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:45,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 351 [2023-08-26 20:48:45,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:46,003 INFO L124 PetriNetUnfolderBase]: 2561/4605 cut-off events. [2023-08-26 20:48:46,003 INFO L125 PetriNetUnfolderBase]: For 6999/6999 co-relation queries the response was YES. [2023-08-26 20:48:46,021 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. [2023-08-26 20:48:46,036 INFO L140 encePairwiseOnDemand]: 341/351 looper letters, 129 selfloop transitions, 21 changer transitions 0/151 dead transitions. [2023-08-26 20:48:46,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 151 transitions, 1240 flow [2023-08-26 20:48:46,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 20:48:46,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 20:48:46,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1137 transitions. [2023-08-26 20:48:46,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627594627594628 [2023-08-26 20:48:46,040 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1137 transitions. [2023-08-26 20:48:46,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1137 transitions. [2023-08-26 20:48:46,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:46,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1137 transitions. [2023-08-26 20:48:46,042 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) [2023-08-26 20:48:46,045 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) [2023-08-26 20:48:46,046 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) [2023-08-26 20:48:46,046 INFO L175 Difference]: Start difference. First operand has 94 places, 79 transitions, 578 flow. Second operand 7 states and 1137 transitions. [2023-08-26 20:48:46,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 151 transitions, 1240 flow [2023-08-26 20:48:46,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 151 transitions, 1212 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-08-26 20:48:46,064 INFO L231 Difference]: Finished difference. Result has 100 places, 90 transitions, 741 flow [2023-08-26 20:48:46,064 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} [2023-08-26 20:48:46,065 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 56 predicate places. [2023-08-26 20:48:46,065 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 90 transitions, 741 flow [2023-08-26 20:48:46,065 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) [2023-08-26 20:48:46,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:46,065 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:46,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 20:48:46,271 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 [2023-08-26 20:48:46,271 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:46,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:46,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1185644252, now seen corresponding path program 2 times [2023-08-26 20:48:46,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:46,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955072015] [2023-08-26 20:48:46,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:46,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:46,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:46,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955072015] [2023-08-26 20:48:46,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955072015] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:48:46,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153773483] [2023-08-26 20:48:46,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 20:48:46,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:46,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:48:46,379 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 20:48:46,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 20:48:46,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 20:48:46,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 20:48:46,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 20:48:46,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:48:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 20:48:46,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 20:48:46,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153773483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:46,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 20:48:46,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-26 20:48:46,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134826784] [2023-08-26 20:48:46,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:46,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 20:48:46,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:46,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 20:48:46,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-26 20:48:46,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 351 [2023-08-26 20:48:46,529 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) [2023-08-26 20:48:46,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:46,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 351 [2023-08-26 20:48:46,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:47,084 INFO L124 PetriNetUnfolderBase]: 2563/4623 cut-off events. [2023-08-26 20:48:47,084 INFO L125 PetriNetUnfolderBase]: For 8315/8315 co-relation queries the response was YES. [2023-08-26 20:48:47,093 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. [2023-08-26 20:48:47,101 INFO L140 encePairwiseOnDemand]: 342/351 looper letters, 97 selfloop transitions, 28 changer transitions 0/126 dead transitions. [2023-08-26 20:48:47,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 126 transitions, 1185 flow [2023-08-26 20:48:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 20:48:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 20:48:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 988 transitions. [2023-08-26 20:48:47,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2023-08-26 20:48:47,103 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 988 transitions. [2023-08-26 20:48:47,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 988 transitions. [2023-08-26 20:48:47,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:47,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 988 transitions. [2023-08-26 20:48:47,106 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) [2023-08-26 20:48:47,108 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) [2023-08-26 20:48:47,109 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) [2023-08-26 20:48:47,109 INFO L175 Difference]: Start difference. First operand has 100 places, 90 transitions, 741 flow. Second operand 6 states and 988 transitions. [2023-08-26 20:48:47,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 126 transitions, 1185 flow [2023-08-26 20:48:47,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 126 transitions, 1171 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-26 20:48:47,128 INFO L231 Difference]: Finished difference. Result has 107 places, 93 transitions, 867 flow [2023-08-26 20:48:47,129 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} [2023-08-26 20:48:47,129 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 63 predicate places. [2023-08-26 20:48:47,129 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 867 flow [2023-08-26 20:48:47,129 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) [2023-08-26 20:48:47,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:47,130 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:47,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 20:48:47,335 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 [2023-08-26 20:48:47,335 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:47,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:47,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1185643720, now seen corresponding path program 1 times [2023-08-26 20:48:47,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:47,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757600139] [2023-08-26 20:48:47,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:47,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:47,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:47,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757600139] [2023-08-26 20:48:47,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757600139] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:48:47,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478008502] [2023-08-26 20:48:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:47,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:47,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:48:47,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 20:48:47,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 20:48:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:47,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 20:48:47,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:48:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:47,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 20:48:47,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478008502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:47,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 20:48:47,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2023-08-26 20:48:47,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433121792] [2023-08-26 20:48:47,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:47,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 20:48:47,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:47,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 20:48:47,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-26 20:48:47,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 351 [2023-08-26 20:48:47,639 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) [2023-08-26 20:48:47,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:47,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 351 [2023-08-26 20:48:47,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:48,287 INFO L124 PetriNetUnfolderBase]: 2683/4823 cut-off events. [2023-08-26 20:48:48,287 INFO L125 PetriNetUnfolderBase]: For 10220/10220 co-relation queries the response was YES. [2023-08-26 20:48:48,303 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. [2023-08-26 20:48:48,358 INFO L140 encePairwiseOnDemand]: 343/351 looper letters, 158 selfloop transitions, 27 changer transitions 0/186 dead transitions. [2023-08-26 20:48:48,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 186 transitions, 1723 flow [2023-08-26 20:48:48,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 20:48:48,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 20:48:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1349 transitions. [2023-08-26 20:48:48,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804131054131054 [2023-08-26 20:48:48,362 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1349 transitions. [2023-08-26 20:48:48,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1349 transitions. [2023-08-26 20:48:48,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:48,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1349 transitions. [2023-08-26 20:48:48,365 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) [2023-08-26 20:48:48,368 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) [2023-08-26 20:48:48,369 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) [2023-08-26 20:48:48,369 INFO L175 Difference]: Start difference. First operand has 107 places, 93 transitions, 867 flow. Second operand 8 states and 1349 transitions. [2023-08-26 20:48:48,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 186 transitions, 1723 flow [2023-08-26 20:48:48,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 186 transitions, 1708 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:48,392 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 1027 flow [2023-08-26 20:48:48,393 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} [2023-08-26 20:48:48,393 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 72 predicate places. [2023-08-26 20:48:48,393 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 1027 flow [2023-08-26 20:48:48,393 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) [2023-08-26 20:48:48,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:48,394 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] [2023-08-26 20:48:48,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-26 20:48:48,599 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 [2023-08-26 20:48:48,600 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:48,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:48,600 INFO L85 PathProgramCache]: Analyzing trace with hash 239237544, now seen corresponding path program 1 times [2023-08-26 20:48:48,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:48,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049369297] [2023-08-26 20:48:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:48,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 20:48:48,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 20:48:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 20:48:48,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 20:48:48,708 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 20:48:48,709 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONASSERT (21 of 22 remaining) [2023-08-26 20:48:48,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 22 remaining) [2023-08-26 20:48:48,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 22 remaining) [2023-08-26 20:48:48,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONASSERT (18 of 22 remaining) [2023-08-26 20:48:48,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-26 20:48:48,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-26 20:48:48,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-26 20:48:48,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-26 20:48:48,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-26 20:48:48,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-26 20:48:48,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-26 20:48:48,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-26 20:48:48,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONASSERT (9 of 22 remaining) [2023-08-26 20:48:48,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONASSERT (8 of 22 remaining) [2023-08-26 20:48:48,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-26 20:48:48,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-26 20:48:48,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-26 20:48:48,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-26 20:48:48,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-26 20:48:48,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-26 20:48:48,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-26 20:48:48,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-26 20:48:48,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 20:48:48,713 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:48,720 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 20:48:48,720 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 20:48:48,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 08:48:48 BasicIcfg [2023-08-26 20:48:48,782 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 20:48:48,783 INFO L158 Benchmark]: Toolchain (without parser) took 19282.51ms. Allocated memory was 346.0MB in the beginning and 864.0MB in the end (delta: 518.0MB). Free memory was 302.6MB in the beginning and 754.0MB in the end (delta: -451.4MB). Peak memory consumption was 69.1MB. Max. memory is 16.0GB. [2023-08-26 20:48:48,783 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 346.0MB. Free memory is still 323.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 20:48:48,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 639.51ms. Allocated memory is still 346.0MB. Free memory was 302.6MB in the beginning and 312.0MB in the end (delta: -9.4MB). Peak memory consumption was 26.0MB. Max. memory is 16.0GB. [2023-08-26 20:48:48,783 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.46ms. Allocated memory is still 346.0MB. Free memory was 312.0MB in the beginning and 309.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 20:48:48,783 INFO L158 Benchmark]: Boogie Preprocessor took 47.73ms. Allocated memory is still 346.0MB. Free memory was 309.2MB in the beginning and 307.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 20:48:48,784 INFO L158 Benchmark]: RCFGBuilder took 464.79ms. Allocated memory is still 346.0MB. Free memory was 307.1MB in the beginning and 288.9MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 20:48:48,784 INFO L158 Benchmark]: TraceAbstraction took 18067.95ms. Allocated memory was 346.0MB in the beginning and 864.0MB in the end (delta: 518.0MB). Free memory was 288.2MB in the beginning and 754.0MB in the end (delta: -465.8MB). Peak memory consumption was 53.6MB. Max. memory is 16.0GB. [2023-08-26 20:48:48,785 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 346.0MB. Free memory is still 323.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 639.51ms. Allocated memory is still 346.0MB. Free memory was 302.6MB in the beginning and 312.0MB in the end (delta: -9.4MB). Peak memory consumption was 26.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.46ms. Allocated memory is still 346.0MB. Free memory was 312.0MB in the beginning and 309.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.73ms. Allocated memory is still 346.0MB. Free memory was 309.2MB in the beginning and 307.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 464.79ms. Allocated memory is still 346.0MB. Free memory was 307.1MB in the beginning and 288.9MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 18067.95ms. Allocated memory was 346.0MB in the beginning and 864.0MB in the end (delta: 518.0MB). Free memory was 288.2MB in the beginning and 754.0MB in the end (delta: -465.8MB). Peak memory consumption was 53.6MB. 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: 3.8s, 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: 17.9s, OverallIterations: 19, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1043 SdHoareTripleChecker+Valid, 2.3s 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, 0.3s SatisfiabilityAnalysisTime, 2.4s 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! [2023-08-26 20:48:48,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...