/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/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:22:16,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:22:16,109 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 22:22:16,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:22:16,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:22:16,136 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:22:16,137 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:22:16,137 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:22:16,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:22:16,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:22:16,142 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:22:16,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:22:16,142 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:22:16,143 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:22:16,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:22:16,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:22:16,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:22:16,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:22:16,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:22:16,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:22:16,145 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:22:16,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:22:16,146 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:22:16,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:22:16,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:22:16,146 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:22:16,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:22:16,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:22:16,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:22:16,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:22:16,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:22:16,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:22:16,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:22:16,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:22:16,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:22:16,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:22:16,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:22:16,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:22:16,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:22:16,472 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:22:16,472 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:22:16,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2023-08-26 22:22:17,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:22:17,899 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:22:17,899 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2023-08-26 22:22:17,919 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87034088f/82791b5799004a199de1eb0861f69bcc/FLAGd1e576506 [2023-08-26 22:22:17,933 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87034088f/82791b5799004a199de1eb0861f69bcc [2023-08-26 22:22:17,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:22:17,938 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:22:17,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:22:17,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:22:17,943 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:22:17,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:22:17" (1/1) ... [2023-08-26 22:22:17,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5031969f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:22:17, skipping insertion in model container [2023-08-26 22:22:17,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:22:17" (1/1) ... [2023-08-26 22:22:17,994 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:22:18,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:22:18,289 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:22:18,319 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 22:22:18,321 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 22:22:18,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:22:18,379 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:22:18,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:22:18 WrapperNode [2023-08-26 22:22:18,381 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:22:18,382 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:22:18,382 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:22:18,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:22:18,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:22:18" (1/1) ... [2023-08-26 22:22:18,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:22:18" (1/1) ... [2023-08-26 22:22:18,432 INFO L138 Inliner]: procedures = 162, calls = 41, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 86 [2023-08-26 22:22:18,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:22:18,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:22:18,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:22:18,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:22:18,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:22:18" (1/1) ... [2023-08-26 22:22:18,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:22:18" (1/1) ... [2023-08-26 22:22:18,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:22:18" (1/1) ... [2023-08-26 22:22:18,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:22:18" (1/1) ... [2023-08-26 22:22:18,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:22:18" (1/1) ... [2023-08-26 22:22:18,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:22:18" (1/1) ... [2023-08-26 22:22:18,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:22:18" (1/1) ... [2023-08-26 22:22:18,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:22:18" (1/1) ... [2023-08-26 22:22:18,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:22:18,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:22:18,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:22:18,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:22:18,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:22:18" (1/1) ... [2023-08-26 22:22:18,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:22:18,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:22:18,526 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 22:22:18,535 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 22:22:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:22:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-26 22:22:18,554 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-26 22:22:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:22:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:22:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:22:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:22:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:22:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:22:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:22:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:22:18,556 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 22:22:18,696 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:22:18,698 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:22:18,946 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:22:18,956 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:22:18,956 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 22:22:18,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:22:18 BoogieIcfgContainer [2023-08-26 22:22:18,958 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:22:18,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:22:18,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:22:18,962 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:22:18,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:22:17" (1/3) ... [2023-08-26 22:22:18,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca868e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:22:18, skipping insertion in model container [2023-08-26 22:22:18,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:22:18" (2/3) ... [2023-08-26 22:22:18,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca868e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:22:18, skipping insertion in model container [2023-08-26 22:22:18,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:22:18" (3/3) ... [2023-08-26 22:22:18,964 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_29-multiple-protecting2-vesal_true.i [2023-08-26 22:22:18,979 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:22:18,979 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 22:22:18,979 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:22:19,050 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:22:19,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 121 transitions, 250 flow [2023-08-26 22:22:19,154 INFO L124 PetriNetUnfolderBase]: 6/120 cut-off events. [2023-08-26 22:22:19,154 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:22:19,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 120 events. 6/120 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2023-08-26 22:22:19,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 121 transitions, 250 flow [2023-08-26 22:22:19,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 113 transitions, 229 flow [2023-08-26 22:22:19,167 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:22:19,174 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 113 transitions, 229 flow [2023-08-26 22:22:19,176 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 113 transitions, 229 flow [2023-08-26 22:22:19,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 113 transitions, 229 flow [2023-08-26 22:22:19,197 INFO L124 PetriNetUnfolderBase]: 6/113 cut-off events. [2023-08-26 22:22:19,197 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:22:19,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 113 events. 6/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2023-08-26 22:22:19,199 INFO L119 LiptonReduction]: Number of co-enabled transitions 2652 [2023-08-26 22:22:22,298 INFO L134 LiptonReduction]: Checked pairs total: 6848 [2023-08-26 22:22:22,298 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-26 22:22:22,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:22:22,314 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;@5d5b5332, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:22:22,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-26 22:22:22,317 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:22:22,317 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 22:22:22,317 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:22:22,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:22:22,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:22:22,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-26 22:22:22,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:22:22,322 INFO L85 PathProgramCache]: Analyzing trace with hash 13433250, now seen corresponding path program 1 times [2023-08-26 22:22:22,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:22:22,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533574022] [2023-08-26 22:22:22,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:22:22,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:22:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:22:22,590 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 22:22:22,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:22:22,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533574022] [2023-08-26 22:22:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533574022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:22:22,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:22:22,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:22:22,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451283918] [2023-08-26 22:22:22,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:22:22,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:22:22,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:22:22,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:22:22,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:22:22,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 234 [2023-08-26 22:22:22,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:22,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:22:22,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 234 [2023-08-26 22:22:22,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:22:22,720 INFO L124 PetriNetUnfolderBase]: 108/258 cut-off events. [2023-08-26 22:22:22,721 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:22:22,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 258 events. 108/258 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1125 event pairs, 38 based on Foata normal form. 17/216 useless extension candidates. Maximal degree in co-relation 494. Up to 187 conditions per place. [2023-08-26 22:22:22,724 INFO L140 encePairwiseOnDemand]: 224/234 looper letters, 32 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-26 22:22:22,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 145 flow [2023-08-26 22:22:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:22:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:22:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2023-08-26 22:22:22,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985754985754986 [2023-08-26 22:22:22,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2023-08-26 22:22:22,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2023-08-26 22:22:22,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:22:22,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2023-08-26 22:22:22,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:22,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:22,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:22,747 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 69 flow. Second operand 3 states and 350 transitions. [2023-08-26 22:22:22,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 145 flow [2023-08-26 22:22:22,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:22:22,751 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 68 flow [2023-08-26 22:22:22,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-08-26 22:22:22,755 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-08-26 22:22:22,755 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 68 flow [2023-08-26 22:22:22,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:22,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:22:22,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:22:22,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:22:22,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-26 22:22:22,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:22:22,757 INFO L85 PathProgramCache]: Analyzing trace with hash 757573019, now seen corresponding path program 1 times [2023-08-26 22:22:22,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:22:22,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807843550] [2023-08-26 22:22:22,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:22:22,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:22:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:22:22,863 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 22:22:22,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:22:22,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807843550] [2023-08-26 22:22:22,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807843550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:22:22,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:22:22,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:22:22,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146848965] [2023-08-26 22:22:22,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:22:22,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:22:22,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:22:22,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:22:22,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:22:22,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 234 [2023-08-26 22:22:22,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:22,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:22:22,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 234 [2023-08-26 22:22:22,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:22:23,012 INFO L124 PetriNetUnfolderBase]: 94/232 cut-off events. [2023-08-26 22:22:23,013 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 22:22:23,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 232 events. 94/232 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1033 event pairs, 10 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 482. Up to 84 conditions per place. [2023-08-26 22:22:23,015 INFO L140 encePairwiseOnDemand]: 227/234 looper letters, 60 selfloop transitions, 6 changer transitions 4/73 dead transitions. [2023-08-26 22:22:23,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 73 transitions, 312 flow [2023-08-26 22:22:23,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:22:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:22:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 653 transitions. [2023-08-26 22:22:23,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650997150997151 [2023-08-26 22:22:23,019 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 653 transitions. [2023-08-26 22:22:23,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 653 transitions. [2023-08-26 22:22:23,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:22:23,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 653 transitions. [2023-08-26 22:22:23,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,025 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,026 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 68 flow. Second operand 6 states and 653 transitions. [2023-08-26 22:22:23,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 73 transitions, 312 flow [2023-08-26 22:22:23,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 73 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:22:23,028 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 83 flow [2023-08-26 22:22:23,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=83, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-08-26 22:22:23,029 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-26 22:22:23,029 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 83 flow [2023-08-26 22:22:23,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:22:23,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:22:23,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:22:23,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-26 22:22:23,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:22:23,031 INFO L85 PathProgramCache]: Analyzing trace with hash 757573008, now seen corresponding path program 1 times [2023-08-26 22:22:23,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:22:23,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066495435] [2023-08-26 22:22:23,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:22:23,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:22:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:22:23,090 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 22:22:23,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:22:23,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066495435] [2023-08-26 22:22:23,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066495435] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:22:23,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:22:23,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:22:23,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732940244] [2023-08-26 22:22:23,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:22:23,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:22:23,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:22:23,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:22:23,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:22:23,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 234 [2023-08-26 22:22:23,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:22:23,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 234 [2023-08-26 22:22:23,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:22:23,214 INFO L124 PetriNetUnfolderBase]: 79/197 cut-off events. [2023-08-26 22:22:23,214 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-08-26 22:22:23,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 197 events. 79/197 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 810 event pairs, 11 based on Foata normal form. 3/187 useless extension candidates. Maximal degree in co-relation 448. Up to 54 conditions per place. [2023-08-26 22:22:23,217 INFO L140 encePairwiseOnDemand]: 227/234 looper letters, 43 selfloop transitions, 5 changer transitions 19/69 dead transitions. [2023-08-26 22:22:23,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 69 transitions, 303 flow [2023-08-26 22:22:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:22:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:22:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 651 transitions. [2023-08-26 22:22:23,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636752136752137 [2023-08-26 22:22:23,220 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 651 transitions. [2023-08-26 22:22:23,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 651 transitions. [2023-08-26 22:22:23,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:22:23,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 651 transitions. [2023-08-26 22:22:23,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,229 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,229 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 83 flow. Second operand 6 states and 651 transitions. [2023-08-26 22:22:23,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 69 transitions, 303 flow [2023-08-26 22:22:23,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 69 transitions, 291 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 22:22:23,235 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 61 flow [2023-08-26 22:22:23,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=61, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2023-08-26 22:22:23,236 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-08-26 22:22:23,239 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 61 flow [2023-08-26 22:22:23,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:22:23,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:22:23,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:22:23,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-26 22:22:23,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:22:23,241 INFO L85 PathProgramCache]: Analyzing trace with hash 781498362, now seen corresponding path program 1 times [2023-08-26 22:22:23,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:22:23,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007530028] [2023-08-26 22:22:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:22:23,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:22:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:22:23,315 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 22:22:23,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:22:23,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007530028] [2023-08-26 22:22:23,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007530028] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:22:23,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:22:23,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:22:23,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101449330] [2023-08-26 22:22:23,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:22:23,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:22:23,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:22:23,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:22:23,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 22:22:23,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 234 [2023-08-26 22:22:23,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:22:23,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 234 [2023-08-26 22:22:23,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:22:23,376 INFO L124 PetriNetUnfolderBase]: 55/142 cut-off events. [2023-08-26 22:22:23,376 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-26 22:22:23,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 142 events. 55/142 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 475 event pairs, 18 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 325. Up to 63 conditions per place. [2023-08-26 22:22:23,377 INFO L140 encePairwiseOnDemand]: 227/234 looper letters, 26 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2023-08-26 22:22:23,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 167 flow [2023-08-26 22:22:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 22:22:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 22:22:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 485 transitions. [2023-08-26 22:22:23,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41452991452991456 [2023-08-26 22:22:23,379 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 485 transitions. [2023-08-26 22:22:23,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 485 transitions. [2023-08-26 22:22:23,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:22:23,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 485 transitions. [2023-08-26 22:22:23,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 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 22:22:23,383 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 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 22:22:23,383 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 61 flow. Second operand 5 states and 485 transitions. [2023-08-26 22:22:23,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 167 flow [2023-08-26 22:22:23,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 149 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 22:22:23,385 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 94 flow [2023-08-26 22:22:23,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-08-26 22:22:23,386 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-08-26 22:22:23,386 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 94 flow [2023-08-26 22:22:23,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:22:23,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:22:23,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:22:23,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-26 22:22:23,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:22:23,387 INFO L85 PathProgramCache]: Analyzing trace with hash 789017348, now seen corresponding path program 1 times [2023-08-26 22:22:23,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:22:23,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850339856] [2023-08-26 22:22:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:22:23,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:22:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:22:23,439 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 22:22:23,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:22:23,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850339856] [2023-08-26 22:22:23,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850339856] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:22:23,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:22:23,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:22:23,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786217923] [2023-08-26 22:22:23,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:22:23,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:22:23,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:22:23,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:22:23,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:22:23,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 234 [2023-08-26 22:22:23,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:22:23,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 234 [2023-08-26 22:22:23,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:22:23,486 INFO L124 PetriNetUnfolderBase]: 30/102 cut-off events. [2023-08-26 22:22:23,486 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-08-26 22:22:23,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 102 events. 30/102 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 306 event pairs, 10 based on Foata normal form. 18/120 useless extension candidates. Maximal degree in co-relation 263. Up to 56 conditions per place. [2023-08-26 22:22:23,491 INFO L140 encePairwiseOnDemand]: 226/234 looper letters, 24 selfloop transitions, 9 changer transitions 0/33 dead transitions. [2023-08-26 22:22:23,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 203 flow [2023-08-26 22:22:23,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:22:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:22:23,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-08-26 22:22:23,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43304843304843305 [2023-08-26 22:22:23,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-08-26 22:22:23,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-08-26 22:22:23,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:22:23,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-08-26 22:22:23,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,500 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 94 flow. Second operand 3 states and 304 transitions. [2023-08-26 22:22:23,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 203 flow [2023-08-26 22:22:23,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 183 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-26 22:22:23,503 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 120 flow [2023-08-26 22:22:23,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-08-26 22:22:23,505 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-26 22:22:23,505 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 120 flow [2023-08-26 22:22:23,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:22:23,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:22:23,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:22:23,506 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-26 22:22:23,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:22:23,507 INFO L85 PathProgramCache]: Analyzing trace with hash -573208296, now seen corresponding path program 1 times [2023-08-26 22:22:23,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:22:23,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515401057] [2023-08-26 22:22:23,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:22:23,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:22:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:22:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:22:23,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:22:23,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515401057] [2023-08-26 22:22:23,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515401057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:22:23,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:22:23,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 22:22:23,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791212385] [2023-08-26 22:22:23,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:22:23,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:22:23,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:22:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:22:23,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:22:23,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 234 [2023-08-26 22:22:23,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 120 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:22:23,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 234 [2023-08-26 22:22:23,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:22:23,698 INFO L124 PetriNetUnfolderBase]: 28/99 cut-off events. [2023-08-26 22:22:23,698 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-08-26 22:22:23,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 99 events. 28/99 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 6 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 291. Up to 26 conditions per place. [2023-08-26 22:22:23,699 INFO L140 encePairwiseOnDemand]: 223/234 looper letters, 30 selfloop transitions, 16 changer transitions 0/48 dead transitions. [2023-08-26 22:22:23,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 293 flow [2023-08-26 22:22:23,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 22:22:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 22:22:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 979 transitions. [2023-08-26 22:22:23,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3803418803418803 [2023-08-26 22:22:23,703 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 979 transitions. [2023-08-26 22:22:23,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 979 transitions. [2023-08-26 22:22:23,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:22:23,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 979 transitions. [2023-08-26 22:22:23,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 234.0) internal successors, (2808), 12 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 22:22:23,710 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 234.0) internal successors, (2808), 12 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 22:22:23,710 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 120 flow. Second operand 11 states and 979 transitions. [2023-08-26 22:22:23,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 293 flow [2023-08-26 22:22:23,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:22:23,713 INFO L231 Difference]: Finished difference. Result has 47 places, 32 transitions, 198 flow [2023-08-26 22:22:23,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=198, PETRI_PLACES=47, PETRI_TRANSITIONS=32} [2023-08-26 22:22:23,716 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-08-26 22:22:23,716 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 32 transitions, 198 flow [2023-08-26 22:22:23,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:22:23,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:22:23,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:22:23,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-26 22:22:23,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:22:23,717 INFO L85 PathProgramCache]: Analyzing trace with hash -543570955, now seen corresponding path program 1 times [2023-08-26 22:22:23,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:22:23,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211877979] [2023-08-26 22:22:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:22:23,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:22:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:22:23,836 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 22:22:23,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:22:23,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211877979] [2023-08-26 22:22:23,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211877979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:22:23,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:22:23,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 22:22:23,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108899576] [2023-08-26 22:22:23,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:22:23,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:22:23,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:22:23,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:22:23,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:22:23,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 234 [2023-08-26 22:22:23,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 32 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:22:23,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 234 [2023-08-26 22:22:23,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:22:23,925 INFO L124 PetriNetUnfolderBase]: 26/94 cut-off events. [2023-08-26 22:22:23,926 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2023-08-26 22:22:23,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 94 events. 26/94 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 263 event pairs, 9 based on Foata normal form. 3/97 useless extension candidates. Maximal degree in co-relation 304. Up to 31 conditions per place. [2023-08-26 22:22:23,926 INFO L140 encePairwiseOnDemand]: 226/234 looper letters, 32 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-26 22:22:23,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 309 flow [2023-08-26 22:22:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 22:22:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 22:22:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 774 transitions. [2023-08-26 22:22:23,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41346153846153844 [2023-08-26 22:22:23,929 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 774 transitions. [2023-08-26 22:22:23,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 774 transitions. [2023-08-26 22:22:23,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:22:23,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 774 transitions. [2023-08-26 22:22:23,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.75) internal successors, (774), 8 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 234.0) internal successors, (2106), 9 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 22:22:23,935 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 234.0) internal successors, (2106), 9 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 22:22:23,935 INFO L175 Difference]: Start difference. First operand has 47 places, 32 transitions, 198 flow. Second operand 8 states and 774 transitions. [2023-08-26 22:22:23,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 309 flow [2023-08-26 22:22:23,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 294 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-26 22:22:23,938 INFO L231 Difference]: Finished difference. Result has 49 places, 31 transitions, 194 flow [2023-08-26 22:22:23,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=194, PETRI_PLACES=49, PETRI_TRANSITIONS=31} [2023-08-26 22:22:23,938 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2023-08-26 22:22:23,938 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 31 transitions, 194 flow [2023-08-26 22:22:23,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:23,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:22:23,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:22:23,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:22:23,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-26 22:22:23,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:22:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1614307061, now seen corresponding path program 1 times [2023-08-26 22:22:23,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:22:23,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106071706] [2023-08-26 22:22:23,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:22:23,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:22:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:22:24,050 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 22:22:24,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:22:24,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106071706] [2023-08-26 22:22:24,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106071706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:22:24,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:22:24,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 22:22:24,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394670748] [2023-08-26 22:22:24,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:22:24,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 22:22:24,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:22:24,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 22:22:24,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-26 22:22:24,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 234 [2023-08-26 22:22:24,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 31 transitions, 194 flow. Second operand has 8 states, 8 states have (on average 81.625) internal successors, (653), 8 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:24,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:22:24,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 234 [2023-08-26 22:22:24,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:22:24,174 INFO L124 PetriNetUnfolderBase]: 26/91 cut-off events. [2023-08-26 22:22:24,175 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-08-26 22:22:24,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 91 events. 26/91 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 242 event pairs, 3 based on Foata normal form. 3/94 useless extension candidates. Maximal degree in co-relation 299. Up to 24 conditions per place. [2023-08-26 22:22:24,175 INFO L140 encePairwiseOnDemand]: 224/234 looper letters, 29 selfloop transitions, 16 changer transitions 0/47 dead transitions. [2023-08-26 22:22:24,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 326 flow [2023-08-26 22:22:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 22:22:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 22:22:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1163 transitions. [2023-08-26 22:22:24,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.355006105006105 [2023-08-26 22:22:24,179 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1163 transitions. [2023-08-26 22:22:24,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1163 transitions. [2023-08-26 22:22:24,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:22:24,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1163 transitions. [2023-08-26 22:22:24,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 83.07142857142857) internal successors, (1163), 14 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:24,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 234.0) internal successors, (3510), 15 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 22:22:24,188 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 234.0) internal successors, (3510), 15 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 22:22:24,188 INFO L175 Difference]: Start difference. First operand has 49 places, 31 transitions, 194 flow. Second operand 14 states and 1163 transitions. [2023-08-26 22:22:24,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 326 flow [2023-08-26 22:22:24,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 296 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-26 22:22:24,190 INFO L231 Difference]: Finished difference. Result has 52 places, 31 transitions, 196 flow [2023-08-26 22:22:24,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=196, PETRI_PLACES=52, PETRI_TRANSITIONS=31} [2023-08-26 22:22:24,190 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2023-08-26 22:22:24,190 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 31 transitions, 196 flow [2023-08-26 22:22:24,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 81.625) internal successors, (653), 8 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:24,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:22:24,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:22:24,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:22:24,191 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-26 22:22:24,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:22:24,192 INFO L85 PathProgramCache]: Analyzing trace with hash 342482083, now seen corresponding path program 1 times [2023-08-26 22:22:24,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:22:24,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183503585] [2023-08-26 22:22:24,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:22:24,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:22:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:22:24,333 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 22:22:24,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:22:24,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183503585] [2023-08-26 22:22:24,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183503585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:22:24,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:22:24,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 22:22:24,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595157447] [2023-08-26 22:22:24,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:22:24,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:22:24,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:22:24,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:22:24,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:22:24,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 234 [2023-08-26 22:22:24,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 31 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 80.33333333333333) internal successors, (482), 6 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:24,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:22:24,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 234 [2023-08-26 22:22:24,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:22:24,380 INFO L124 PetriNetUnfolderBase]: 18/69 cut-off events. [2023-08-26 22:22:24,380 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-08-26 22:22:24,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 69 events. 18/69 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 166 event pairs, 1 based on Foata normal form. 9/78 useless extension candidates. Maximal degree in co-relation 239. Up to 48 conditions per place. [2023-08-26 22:22:24,381 INFO L140 encePairwiseOnDemand]: 230/234 looper letters, 33 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-08-26 22:22:24,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 38 transitions, 307 flow [2023-08-26 22:22:24,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:22:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:22:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 337 transitions. [2023-08-26 22:22:24,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36004273504273504 [2023-08-26 22:22:24,383 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 337 transitions. [2023-08-26 22:22:24,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 337 transitions. [2023-08-26 22:22:24,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:22:24,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 337 transitions. [2023-08-26 22:22:24,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:24,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:24,386 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:24,388 INFO L175 Difference]: Start difference. First operand has 52 places, 31 transitions, 196 flow. Second operand 4 states and 337 transitions. [2023-08-26 22:22:24,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 38 transitions, 307 flow [2023-08-26 22:22:24,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 252 flow, removed 4 selfloop flow, removed 15 redundant places. [2023-08-26 22:22:24,390 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 150 flow [2023-08-26 22:22:24,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-08-26 22:22:24,391 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-26 22:22:24,391 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 150 flow [2023-08-26 22:22:24,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.33333333333333) internal successors, (482), 6 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:24,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:22:24,391 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 22:22:24,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 22:22:24,392 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-26 22:22:24,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:22:24,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2144488713, now seen corresponding path program 1 times [2023-08-26 22:22:24,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:22:24,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906300025] [2023-08-26 22:22:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:22:24,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:22:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:22:24,511 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 22:22:24,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:22:24,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906300025] [2023-08-26 22:22:24,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906300025] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:22:24,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:22:24,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 22:22:24,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248899792] [2023-08-26 22:22:24,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:22:24,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:22:24,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:22:24,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:22:24,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:22:24,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 234 [2023-08-26 22:22:24,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:24,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:22:24,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 234 [2023-08-26 22:22:24,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:22:24,583 INFO L124 PetriNetUnfolderBase]: 17/67 cut-off events. [2023-08-26 22:22:24,583 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-26 22:22:24,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 67 events. 17/67 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 154 event pairs, 10 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 201. Up to 42 conditions per place. [2023-08-26 22:22:24,584 INFO L140 encePairwiseOnDemand]: 227/234 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-08-26 22:22:24,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 35 transitions, 224 flow [2023-08-26 22:22:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:22:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:22:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 668 transitions. [2023-08-26 22:22:24,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4078144078144078 [2023-08-26 22:22:24,586 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 668 transitions. [2023-08-26 22:22:24,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 668 transitions. [2023-08-26 22:22:24,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:22:24,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 668 transitions. [2023-08-26 22:22:24,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.42857142857143) internal successors, (668), 7 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:24,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:24,591 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:24,591 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 150 flow. Second operand 7 states and 668 transitions. [2023-08-26 22:22:24,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 35 transitions, 224 flow [2023-08-26 22:22:24,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 219 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:22:24,592 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-26 22:22:24,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-26 22:22:24,593 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-26 22:22:24,593 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-26 22:22:24,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:22:24,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-08-26 22:22:24,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-08-26 22:22:24,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-08-26 22:22:24,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-08-26 22:22:24,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (7 of 12 remaining) [2023-08-26 22:22:24,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (6 of 12 remaining) [2023-08-26 22:22:24,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (5 of 12 remaining) [2023-08-26 22:22:24,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2023-08-26 22:22:24,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-08-26 22:22:24,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-08-26 22:22:24,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-08-26 22:22:24,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-08-26 22:22:24,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 22:22:24,597 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:22:24,601 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 22:22:24,601 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 22:22:24,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 10:22:24 BasicIcfg [2023-08-26 22:22:24,603 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 22:22:24,604 INFO L158 Benchmark]: Toolchain (without parser) took 6665.21ms. Allocated memory was 383.8MB in the beginning and 490.7MB in the end (delta: 107.0MB). Free memory was 358.4MB in the beginning and 326.3MB in the end (delta: 32.1MB). Peak memory consumption was 140.6MB. Max. memory is 16.0GB. [2023-08-26 22:22:24,604 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 383.8MB. Free memory is still 359.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 22:22:24,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 440.51ms. Allocated memory is still 383.8MB. Free memory was 358.4MB in the beginning and 339.1MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 22:22:24,604 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.01ms. Allocated memory is still 383.8MB. Free memory was 339.1MB in the beginning and 337.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 22:22:24,604 INFO L158 Benchmark]: Boogie Preprocessor took 55.04ms. Allocated memory is still 383.8MB. Free memory was 337.0MB in the beginning and 335.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 22:22:24,605 INFO L158 Benchmark]: RCFGBuilder took 468.62ms. Allocated memory is still 383.8MB. Free memory was 335.3MB in the beginning and 320.2MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 22:22:24,605 INFO L158 Benchmark]: TraceAbstraction took 5643.65ms. Allocated memory was 383.8MB in the beginning and 490.7MB in the end (delta: 107.0MB). Free memory was 319.3MB in the beginning and 326.3MB in the end (delta: -7.0MB). Peak memory consumption was 102.8MB. Max. memory is 16.0GB. [2023-08-26 22:22:24,606 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 383.8MB. Free memory is still 359.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 440.51ms. Allocated memory is still 383.8MB. Free memory was 358.4MB in the beginning and 339.1MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.01ms. Allocated memory is still 383.8MB. Free memory was 339.1MB in the beginning and 337.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 55.04ms. Allocated memory is still 383.8MB. Free memory was 337.0MB in the beginning and 335.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 468.62ms. Allocated memory is still 383.8MB. Free memory was 335.3MB in the beginning and 320.2MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5643.65ms. Allocated memory was 383.8MB in the beginning and 490.7MB in the end (delta: 107.0MB). Free memory was 319.3MB in the beginning and 326.3MB in the end (delta: -7.0MB). Peak memory consumption was 102.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 111 PlacesBefore, 34 PlacesAfterwards, 113 TransitionsBefore, 33 TransitionsAfterwards, 2652 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 113 TotalNumberOfCompositions, 6848 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2733, independent: 2456, independent conditional: 0, independent unconditional: 2456, dependent: 277, dependent conditional: 0, dependent unconditional: 277, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1507, independent: 1448, independent conditional: 0, independent unconditional: 1448, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2733, independent: 1008, independent conditional: 0, independent unconditional: 1008, dependent: 218, dependent conditional: 0, dependent unconditional: 218, unknown: 1507, unknown conditional: 0, unknown unconditional: 1507] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 691]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 691]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 144 locations, 12 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: 5.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 315 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 315 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 798 IncrementalHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 1 mSDtfsCounter, 798 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=6, InterpolantAutomatonStates: 67, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 373 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 22:22:24,618 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...