/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/28-race_reach_05-lockfuns_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:31:14,081 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:31:14,156 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 22:31:14,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:31:14,161 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:31:14,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:31:14,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:31:14,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:31:14,189 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:31:14,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:31:14,193 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:31:14,193 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:31:14,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:31:14,194 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:31:14,194 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:31:14,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:31:14,195 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:31:14,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:31:14,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:31:14,196 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:31:14,196 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:31:14,196 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:31:14,201 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:31:14,201 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:31:14,202 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:31:14,202 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:31:14,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:31:14,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:31:14,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:31:14,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:31:14,204 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:31:14,204 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:31:14,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:31:14,204 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:31:14,204 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:31:14,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:31:14,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:31:14,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:31:14,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:31:14,573 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:31:14,573 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:31:14,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-08-26 22:31:15,732 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:31:16,014 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:31:16,014 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-08-26 22:31:16,027 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b969031f/a0646f2b432b4baf9618db691e6a9741/FLAGc1d7ddd03 [2023-08-26 22:31:16,039 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b969031f/a0646f2b432b4baf9618db691e6a9741 [2023-08-26 22:31:16,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:31:16,042 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:31:16,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:31:16,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:31:16,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:31:16,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:31:16" (1/1) ... [2023-08-26 22:31:16,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca95d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:16, skipping insertion in model container [2023-08-26 22:31:16,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:31:16" (1/1) ... [2023-08-26 22:31:16,093 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:31:16,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:31:16,428 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:31:16,458 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:31:16,460 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:31:16,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:31:16,507 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:31:16,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:16 WrapperNode [2023-08-26 22:31:16,508 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:31:16,509 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:31:16,509 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:31:16,509 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:31:16,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:16" (1/1) ... [2023-08-26 22:31:16,539 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:16" (1/1) ... [2023-08-26 22:31:16,561 INFO L138 Inliner]: procedures = 172, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2023-08-26 22:31:16,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:31:16,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:31:16,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:31:16,562 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:31:16,571 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:16" (1/1) ... [2023-08-26 22:31:16,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:16" (1/1) ... [2023-08-26 22:31:16,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:16" (1/1) ... [2023-08-26 22:31:16,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:16" (1/1) ... [2023-08-26 22:31:16,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:16" (1/1) ... [2023-08-26 22:31:16,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:16" (1/1) ... [2023-08-26 22:31:16,601 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:16" (1/1) ... [2023-08-26 22:31:16,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:16" (1/1) ... [2023-08-26 22:31:16,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:31:16,606 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:31:16,606 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:31:16,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:31:16,606 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:16" (1/1) ... [2023-08-26 22:31:16,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:31:16,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:31:16,650 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 22:31:16,681 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 22:31:16,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:31:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:31:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:31:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:31:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:31:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:31:16,696 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:31:16,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:31:16,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:31:16,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:31:16,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:31:16,697 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 22:31:16,805 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:31:16,806 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:31:16,972 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:31:16,978 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:31:16,978 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-26 22:31:16,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:31:16 BoogieIcfgContainer [2023-08-26 22:31:16,979 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:31:16,981 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:31:16,981 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:31:16,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:31:16,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:31:16" (1/3) ... [2023-08-26 22:31:16,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b32d2c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:31:16, skipping insertion in model container [2023-08-26 22:31:16,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:31:16" (2/3) ... [2023-08-26 22:31:16,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b32d2c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:31:16, skipping insertion in model container [2023-08-26 22:31:16,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:31:16" (3/3) ... [2023-08-26 22:31:16,986 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2023-08-26 22:31:17,001 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:31:17,001 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-26 22:31:17,001 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:31:17,068 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:31:17,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 125 transitions, 258 flow [2023-08-26 22:31:17,213 INFO L124 PetriNetUnfolderBase]: 19/166 cut-off events. [2023-08-26 22:31:17,214 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:31:17,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 166 events. 19/166 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 414 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-08-26 22:31:17,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 125 transitions, 258 flow [2023-08-26 22:31:17,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 122 transitions, 252 flow [2023-08-26 22:31:17,235 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:31:17,247 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 122 transitions, 252 flow [2023-08-26 22:31:17,250 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 122 transitions, 252 flow [2023-08-26 22:31:17,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 122 transitions, 252 flow [2023-08-26 22:31:17,290 INFO L124 PetriNetUnfolderBase]: 18/163 cut-off events. [2023-08-26 22:31:17,290 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:31:17,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 163 events. 18/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 412 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-08-26 22:31:17,295 INFO L119 LiptonReduction]: Number of co-enabled transitions 3876 [2023-08-26 22:31:19,851 INFO L134 LiptonReduction]: Checked pairs total: 5611 [2023-08-26 22:31:19,852 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-26 22:31:19,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:31:19,868 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;@693cc07f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:31:19,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-26 22:31:19,871 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:31:19,871 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 22:31:19,871 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:31:19,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:19,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:31:19,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:31:19,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:19,876 INFO L85 PathProgramCache]: Analyzing trace with hash 15070119, now seen corresponding path program 1 times [2023-08-26 22:31:19,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:19,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575051509] [2023-08-26 22:31:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:19,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:31:20,145 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 22:31:20,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:31:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575051509] [2023-08-26 22:31:20,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575051509] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:31:20,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:31:20,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:31:20,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538984494] [2023-08-26 22:31:20,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:31:20,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:31:20,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:31:20,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:31:20,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:31:20,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 235 [2023-08-26 22:31:20,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 39 transitions, 86 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 22:31:20,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:31:20,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 235 [2023-08-26 22:31:20,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:31:20,279 INFO L124 PetriNetUnfolderBase]: 108/268 cut-off events. [2023-08-26 22:31:20,280 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:31:20,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 268 events. 108/268 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1246 event pairs, 36 based on Foata normal form. 24/210 useless extension candidates. Maximal degree in co-relation 491. Up to 160 conditions per place. [2023-08-26 22:31:20,283 INFO L140 encePairwiseOnDemand]: 223/235 looper letters, 36 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-26 22:31:20,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 166 flow [2023-08-26 22:31:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:31:20,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:31:20,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2023-08-26 22:31:20,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2023-08-26 22:31:20,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2023-08-26 22:31:20,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2023-08-26 22:31:20,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:31:20,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2023-08-26 22:31:20,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:20,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:20,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:20,320 INFO L175 Difference]: Start difference. First operand has 34 places, 39 transitions, 86 flow. Second operand 3 states and 360 transitions. [2023-08-26 22:31:20,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 166 flow [2023-08-26 22:31:20,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 166 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:31:20,325 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 70 flow [2023-08-26 22:31:20,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-08-26 22:31:20,332 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-26 22:31:20,332 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 70 flow [2023-08-26 22:31:20,332 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 22:31:20,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:20,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:31:20,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:31:20,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:31:20,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:20,334 INFO L85 PathProgramCache]: Analyzing trace with hash 15074140, now seen corresponding path program 1 times [2023-08-26 22:31:20,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:20,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136243159] [2023-08-26 22:31:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:20,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:31:20,415 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 22:31:20,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:31:20,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136243159] [2023-08-26 22:31:20,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136243159] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:31:20,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:31:20,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:31:20,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962313936] [2023-08-26 22:31:20,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:31:20,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:31:20,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:31:20,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:31:20,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:31:20,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 235 [2023-08-26 22:31:20,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:20,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:31:20,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 235 [2023-08-26 22:31:20,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:31:20,494 INFO L124 PetriNetUnfolderBase]: 96/245 cut-off events. [2023-08-26 22:31:20,494 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:31:20,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 245 events. 96/245 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1190 event pairs, 0 based on Foata normal form. 1/196 useless extension candidates. Maximal degree in co-relation 451. Up to 204 conditions per place. [2023-08-26 22:31:20,496 INFO L140 encePairwiseOnDemand]: 231/235 looper letters, 36 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-26 22:31:20,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 170 flow [2023-08-26 22:31:20,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:31:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:31:20,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-08-26 22:31:20,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4907801418439716 [2023-08-26 22:31:20,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-08-26 22:31:20,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-08-26 22:31:20,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:31:20,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-08-26 22:31:20,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:20,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:20,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:20,502 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 70 flow. Second operand 3 states and 346 transitions. [2023-08-26 22:31:20,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 170 flow [2023-08-26 22:31:20,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:31:20,505 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 72 flow [2023-08-26 22:31:20,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-26 22:31:20,505 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-26 22:31:20,506 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 72 flow [2023-08-26 22:31:20,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:20,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:20,506 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:31:20,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:31:20,507 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:31:20,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:20,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1597516919, now seen corresponding path program 1 times [2023-08-26 22:31:20,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:20,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843970497] [2023-08-26 22:31:20,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:20,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:31:20,530 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:31:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:31:20,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:31:20,563 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:31:20,565 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2023-08-26 22:31:20,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-26 22:31:20,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-08-26 22:31:20,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-26 22:31:20,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (9 of 14 remaining) [2023-08-26 22:31:20,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-08-26 22:31:20,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-08-26 22:31:20,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-08-26 22:31:20,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-08-26 22:31:20,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-08-26 22:31:20,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-26 22:31:20,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-26 22:31:20,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-26 22:31:20,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-26 22:31:20,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:31:20,573 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-26 22:31:20,575 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:31:20,575 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:31:20,599 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:31:20,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 165 transitions, 348 flow [2023-08-26 22:31:20,630 INFO L124 PetriNetUnfolderBase]: 34/284 cut-off events. [2023-08-26 22:31:20,630 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:31:20,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 284 events. 34/284 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 873 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2023-08-26 22:31:20,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 165 transitions, 348 flow [2023-08-26 22:31:20,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 165 transitions, 348 flow [2023-08-26 22:31:20,635 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:31:20,635 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 165 transitions, 348 flow [2023-08-26 22:31:20,636 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 165 transitions, 348 flow [2023-08-26 22:31:20,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 165 transitions, 348 flow [2023-08-26 22:31:20,660 INFO L124 PetriNetUnfolderBase]: 34/284 cut-off events. [2023-08-26 22:31:20,660 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:31:20,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 284 events. 34/284 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 873 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2023-08-26 22:31:20,669 INFO L119 LiptonReduction]: Number of co-enabled transitions 12084 [2023-08-26 22:31:23,311 INFO L134 LiptonReduction]: Checked pairs total: 28027 [2023-08-26 22:31:23,311 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-26 22:31:23,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:31:23,314 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;@693cc07f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:31:23,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-26 22:31:23,316 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:31:23,316 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-08-26 22:31:23,316 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:31:23,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:23,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:31:23,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:31:23,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:23,317 INFO L85 PathProgramCache]: Analyzing trace with hash 25417598, now seen corresponding path program 1 times [2023-08-26 22:31:23,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:23,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753738991] [2023-08-26 22:31:23,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:23,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:31:23,355 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 22:31:23,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:31:23,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753738991] [2023-08-26 22:31:23,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753738991] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:31:23,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:31:23,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:31:23,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368301213] [2023-08-26 22:31:23,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:31:23,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:31:23,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:31:23,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:31:23,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:31:23,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 296 [2023-08-26 22:31:23,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 71 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:23,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:31:23,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 296 [2023-08-26 22:31:23,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:31:23,947 INFO L124 PetriNetUnfolderBase]: 4469/7638 cut-off events. [2023-08-26 22:31:23,948 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-08-26 22:31:23,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14860 conditions, 7638 events. 4469/7638 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 54573 event pairs, 2088 based on Foata normal form. 1322/6244 useless extension candidates. Maximal degree in co-relation 1700. Up to 7102 conditions per place. [2023-08-26 22:31:23,997 INFO L140 encePairwiseOnDemand]: 275/296 looper letters, 58 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-26 22:31:23,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 276 flow [2023-08-26 22:31:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:31:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:31:23,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-26 22:31:24,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484234234234234 [2023-08-26 22:31:24,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-26 22:31:24,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-26 22:31:24,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:31:24,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-26 22:31:24,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:24,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:24,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:24,004 INFO L175 Difference]: Start difference. First operand has 58 places, 71 transitions, 160 flow. Second operand 3 states and 487 transitions. [2023-08-26 22:31:24,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 276 flow [2023-08-26 22:31:24,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:31:24,006 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 142 flow [2023-08-26 22:31:24,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-26 22:31:24,007 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-08-26 22:31:24,007 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 142 flow [2023-08-26 22:31:24,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:24,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:24,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:31:24,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:31:24,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:31:24,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:24,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1160293219, now seen corresponding path program 1 times [2023-08-26 22:31:24,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:24,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589986471] [2023-08-26 22:31:24,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:24,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:31:24,062 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 22:31:24,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:31:24,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589986471] [2023-08-26 22:31:24,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589986471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:31:24,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:31:24,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:31:24,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405888361] [2023-08-26 22:31:24,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:31:24,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:31:24,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:31:24,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:31:24,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:31:24,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 296 [2023-08-26 22:31:24,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:24,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:31:24,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 296 [2023-08-26 22:31:24,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:31:24,555 INFO L124 PetriNetUnfolderBase]: 3953/6643 cut-off events. [2023-08-26 22:31:24,556 INFO L125 PetriNetUnfolderBase]: For 434/434 co-relation queries the response was YES. [2023-08-26 22:31:24,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13746 conditions, 6643 events. 3953/6643 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 45628 event pairs, 1692 based on Foata normal form. 0/4549 useless extension candidates. Maximal degree in co-relation 13658. Up to 5959 conditions per place. [2023-08-26 22:31:24,602 INFO L140 encePairwiseOnDemand]: 287/296 looper letters, 62 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2023-08-26 22:31:24,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 74 transitions, 326 flow [2023-08-26 22:31:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:31:24,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:31:24,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2023-08-26 22:31:24,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236486486486487 [2023-08-26 22:31:24,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2023-08-26 22:31:24,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2023-08-26 22:31:24,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:31:24,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2023-08-26 22:31:24,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:24,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:24,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:24,608 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 142 flow. Second operand 3 states and 465 transitions. [2023-08-26 22:31:24,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 74 transitions, 326 flow [2023-08-26 22:31:24,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 74 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:31:24,611 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 169 flow [2023-08-26 22:31:24,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-08-26 22:31:24,612 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2023-08-26 22:31:24,612 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 169 flow [2023-08-26 22:31:24,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:24,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:24,613 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:31:24,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:31:24,613 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:31:24,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:24,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1555287928, now seen corresponding path program 1 times [2023-08-26 22:31:24,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:24,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821726712] [2023-08-26 22:31:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:24,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:31:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:31:24,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:31:24,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821726712] [2023-08-26 22:31:24,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821726712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:31:24,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:31:24,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:31:24,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078326141] [2023-08-26 22:31:24,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:31:24,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:31:24,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:31:24,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:31:24,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:31:24,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 296 [2023-08-26 22:31:24,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:24,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:31:24,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 296 [2023-08-26 22:31:24,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:31:25,093 INFO L124 PetriNetUnfolderBase]: 3652/6183 cut-off events. [2023-08-26 22:31:25,093 INFO L125 PetriNetUnfolderBase]: For 962/967 co-relation queries the response was YES. [2023-08-26 22:31:25,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13737 conditions, 6183 events. 3652/6183 cut-off events. For 962/967 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 44103 event pairs, 1042 based on Foata normal form. 0/4702 useless extension candidates. Maximal degree in co-relation 11205. Up to 4099 conditions per place. [2023-08-26 22:31:25,132 INFO L140 encePairwiseOnDemand]: 293/296 looper letters, 72 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-26 22:31:25,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 385 flow [2023-08-26 22:31:25,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:31:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:31:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-08-26 22:31:25,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2023-08-26 22:31:25,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-08-26 22:31:25,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-08-26 22:31:25,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:31:25,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-08-26 22:31:25,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:25,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:25,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:25,141 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 169 flow. Second operand 3 states and 472 transitions. [2023-08-26 22:31:25,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 385 flow [2023-08-26 22:31:25,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:31:25,144 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 166 flow [2023-08-26 22:31:25,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-26 22:31:25,145 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2023-08-26 22:31:25,145 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 166 flow [2023-08-26 22:31:25,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:25,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:25,146 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:31:25,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:31:25,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:31:25,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:25,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1555287887, now seen corresponding path program 1 times [2023-08-26 22:31:25,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:25,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270941055] [2023-08-26 22:31:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:25,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:31:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:31:25,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:31:25,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270941055] [2023-08-26 22:31:25,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270941055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:31:25,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:31:25,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:31:25,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545110044] [2023-08-26 22:31:25,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:31:25,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:31:25,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:31:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:31:25,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:31:25,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 296 [2023-08-26 22:31:25,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:25,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:31:25,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 296 [2023-08-26 22:31:25,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:31:25,589 INFO L124 PetriNetUnfolderBase]: 3351/5666 cut-off events. [2023-08-26 22:31:25,590 INFO L125 PetriNetUnfolderBase]: For 768/771 co-relation queries the response was YES. [2023-08-26 22:31:25,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12634 conditions, 5666 events. 3351/5666 cut-off events. For 768/771 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 39465 event pairs, 445 based on Foata normal form. 1/4427 useless extension candidates. Maximal degree in co-relation 10262. Up to 4587 conditions per place. [2023-08-26 22:31:25,620 INFO L140 encePairwiseOnDemand]: 292/296 looper letters, 70 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-26 22:31:25,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 382 flow [2023-08-26 22:31:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:31:25,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:31:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-08-26 22:31:25,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2023-08-26 22:31:25,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-08-26 22:31:25,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-08-26 22:31:25,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:31:25,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-08-26 22:31:25,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:25,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:25,626 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:25,626 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 166 flow. Second operand 3 states and 472 transitions. [2023-08-26 22:31:25,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 382 flow [2023-08-26 22:31:25,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 83 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:31:25,637 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 174 flow [2023-08-26 22:31:25,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-26 22:31:25,638 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2023-08-26 22:31:25,638 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 174 flow [2023-08-26 22:31:25,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:25,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:25,638 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 22:31:25,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:31:25,639 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:31:25,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:25,639 INFO L85 PathProgramCache]: Analyzing trace with hash 16983636, now seen corresponding path program 1 times [2023-08-26 22:31:25,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:25,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988218206] [2023-08-26 22:31:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:25,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:31:25,651 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:31:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:31:25,663 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:31:25,664 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:31:25,664 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-26 22:31:25,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-26 22:31:25,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-26 22:31:25,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-26 22:31:25,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (13 of 18 remaining) [2023-08-26 22:31:25,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-26 22:31:25,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-26 22:31:25,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-26 22:31:25,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-26 22:31:25,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-26 22:31:25,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-26 22:31:25,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-26 22:31:25,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-26 22:31:25,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-26 22:31:25,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-26 22:31:25,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-26 22:31:25,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-26 22:31:25,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-26 22:31:25,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:31:25,666 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 22:31:25,667 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:31:25,667 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 22:31:25,686 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 22:31:25,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 205 transitions, 440 flow [2023-08-26 22:31:25,730 INFO L124 PetriNetUnfolderBase]: 54/443 cut-off events. [2023-08-26 22:31:25,731 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:31:25,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 443 events. 54/443 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1544 event pairs, 1 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 292. Up to 16 conditions per place. [2023-08-26 22:31:25,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 205 transitions, 440 flow [2023-08-26 22:31:25,738 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 205 transitions, 440 flow [2023-08-26 22:31:25,739 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:31:25,739 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 205 transitions, 440 flow [2023-08-26 22:31:25,739 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 205 transitions, 440 flow [2023-08-26 22:31:25,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 205 transitions, 440 flow [2023-08-26 22:31:25,776 INFO L124 PetriNetUnfolderBase]: 54/443 cut-off events. [2023-08-26 22:31:25,777 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:31:25,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 443 events. 54/443 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1544 event pairs, 1 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 292. Up to 16 conditions per place. [2023-08-26 22:31:25,798 INFO L119 LiptonReduction]: Number of co-enabled transitions 22800 [2023-08-26 22:31:28,553 INFO L134 LiptonReduction]: Checked pairs total: 57449 [2023-08-26 22:31:28,553 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-08-26 22:31:28,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:31:28,555 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;@693cc07f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:31:28,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-26 22:31:28,557 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:31:28,557 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-08-26 22:31:28,557 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:31:28,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:28,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:31:28,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:31:28,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:28,558 INFO L85 PathProgramCache]: Analyzing trace with hash 37850308, now seen corresponding path program 1 times [2023-08-26 22:31:28,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:28,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850889173] [2023-08-26 22:31:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:28,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:31:28,578 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 22:31:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:31:28,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850889173] [2023-08-26 22:31:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850889173] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:31:28,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:31:28,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:31:28,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91318982] [2023-08-26 22:31:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:31:28,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:31:28,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:31:28,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:31:28,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:31:28,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 364 [2023-08-26 22:31:28,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 94 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:28,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:31:28,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 364 [2023-08-26 22:31:28,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:31:38,140 INFO L124 PetriNetUnfolderBase]: 123058/172441 cut-off events. [2023-08-26 22:31:38,140 INFO L125 PetriNetUnfolderBase]: For 2718/2718 co-relation queries the response was YES. [2023-08-26 22:31:38,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344554 conditions, 172441 events. 123058/172441 cut-off events. For 2718/2718 co-relation queries the response was YES. Maximal size of possible extension queue 5143. Compared 1290099 event pairs, 80319 based on Foata normal form. 19246/132527 useless extension candidates. Maximal degree in co-relation 30715. Up to 170347 conditions per place. [2023-08-26 22:31:39,341 INFO L140 encePairwiseOnDemand]: 337/364 looper letters, 76 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-26 22:31:39,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 86 transitions, 358 flow [2023-08-26 22:31:39,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:31:39,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:31:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-26 22:31:39,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558608058608059 [2023-08-26 22:31:39,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-26 22:31:39,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-26 22:31:39,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:31:39,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-26 22:31:39,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:39,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:39,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:39,351 INFO L175 Difference]: Start difference. First operand has 76 places, 94 transitions, 218 flow. Second operand 3 states and 607 transitions. [2023-08-26 22:31:39,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 86 transitions, 358 flow [2023-08-26 22:31:39,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:31:39,356 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 188 flow [2023-08-26 22:31:39,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2023-08-26 22:31:39,357 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2023-08-26 22:31:39,357 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 188 flow [2023-08-26 22:31:39,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:39,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:39,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:31:39,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 22:31:39,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:31:39,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:39,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2026181095, now seen corresponding path program 1 times [2023-08-26 22:31:39,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:39,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865751605] [2023-08-26 22:31:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:39,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:31:39,410 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 22:31:39,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:31:39,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865751605] [2023-08-26 22:31:39,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865751605] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:31:39,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:31:39,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:31:39,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174672730] [2023-08-26 22:31:39,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:31:39,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:31:39,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:31:39,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:31:39,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:31:39,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 364 [2023-08-26 22:31:39,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 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 22:31:39,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:31:39,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 364 [2023-08-26 22:31:39,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:31:47,675 INFO L124 PetriNetUnfolderBase]: 117370/163567 cut-off events. [2023-08-26 22:31:47,676 INFO L125 PetriNetUnfolderBase]: For 9119/9119 co-relation queries the response was YES. [2023-08-26 22:31:47,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340701 conditions, 163567 events. 117370/163567 cut-off events. For 9119/9119 co-relation queries the response was YES. Maximal size of possible extension queue 5171. Compared 1205155 event pairs, 61185 based on Foata normal form. 0/111529 useless extension candidates. Maximal degree in co-relation 340612. Up to 160691 conditions per place. [2023-08-26 22:31:48,445 INFO L140 encePairwiseOnDemand]: 352/364 looper letters, 84 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-26 22:31:48,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 96 transitions, 435 flow [2023-08-26 22:31:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:31:48,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:31:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2023-08-26 22:31:48,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256410256410257 [2023-08-26 22:31:48,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2023-08-26 22:31:48,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2023-08-26 22:31:48,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:31:48,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2023-08-26 22:31:48,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:48,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:48,454 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:48,458 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 188 flow. Second operand 3 states and 574 transitions. [2023-08-26 22:31:48,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 96 transitions, 435 flow [2023-08-26 22:31:48,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 96 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:31:48,469 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 226 flow [2023-08-26 22:31:48,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2023-08-26 22:31:48,471 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2023-08-26 22:31:48,472 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 226 flow [2023-08-26 22:31:48,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 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 22:31:48,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:48,472 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:31:48,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 22:31:48,472 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:31:48,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:48,473 INFO L85 PathProgramCache]: Analyzing trace with hash 725304461, now seen corresponding path program 1 times [2023-08-26 22:31:48,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:48,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600312745] [2023-08-26 22:31:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:48,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:31:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:31:48,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:31:48,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600312745] [2023-08-26 22:31:48,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600312745] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:31:48,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:31:48,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:31:48,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936001714] [2023-08-26 22:31:48,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:31:48,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:31:48,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:31:48,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:31:48,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:31:48,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 364 [2023-08-26 22:31:48,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:48,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:31:48,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 364 [2023-08-26 22:31:48,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:31:56,303 INFO L124 PetriNetUnfolderBase]: 108606/154780 cut-off events. [2023-08-26 22:31:56,304 INFO L125 PetriNetUnfolderBase]: For 20252/20252 co-relation queries the response was YES. [2023-08-26 22:31:56,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345911 conditions, 154780 events. 108606/154780 cut-off events. For 20252/20252 co-relation queries the response was YES. Maximal size of possible extension queue 4501. Compared 1200648 event pairs, 22583 based on Foata normal form. 0/118877 useless extension candidates. Maximal degree in co-relation 190663. Up to 117755 conditions per place. [2023-08-26 22:31:57,033 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 107 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2023-08-26 22:31:57,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 119 transitions, 561 flow [2023-08-26 22:31:57,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:31:57,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:31:57,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2023-08-26 22:31:57,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5521978021978022 [2023-08-26 22:31:57,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2023-08-26 22:31:57,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2023-08-26 22:31:57,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:31:57,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2023-08-26 22:31:57,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:57,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:57,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:57,043 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 226 flow. Second operand 3 states and 603 transitions. [2023-08-26 22:31:57,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 119 transitions, 561 flow [2023-08-26 22:31:57,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 119 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:31:57,088 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 234 flow [2023-08-26 22:31:57,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2023-08-26 22:31:57,090 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2023-08-26 22:31:57,090 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 234 flow [2023-08-26 22:31:57,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:57,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:31:57,090 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:31:57,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 22:31:57,090 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:31:57,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:31:57,091 INFO L85 PathProgramCache]: Analyzing trace with hash 725304422, now seen corresponding path program 1 times [2023-08-26 22:31:57,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:31:57,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311965363] [2023-08-26 22:31:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:57,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:31:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:31:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:31:57,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:31:57,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311965363] [2023-08-26 22:31:57,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311965363] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:31:57,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703961948] [2023-08-26 22:31:57,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:31:57,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:31:57,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:31:57,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:31:57,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 22:31:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:31:57,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 22:31:57,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:31:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:31:57,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:31:57,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703961948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:31:57,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:31:57,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-26 22:31:57,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434983668] [2023-08-26 22:31:57,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:31:57,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:31:57,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:31:57,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:31:57,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:31:57,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 364 [2023-08-26 22:31:57,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:31:57,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:31:57,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 364 [2023-08-26 22:31:57,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:32:04,668 INFO L124 PetriNetUnfolderBase]: 99842/142912 cut-off events. [2023-08-26 22:32:04,668 INFO L125 PetriNetUnfolderBase]: For 44625/44625 co-relation queries the response was YES. [2023-08-26 22:32:04,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326355 conditions, 142912 events. 99842/142912 cut-off events. For 44625/44625 co-relation queries the response was YES. Maximal size of possible extension queue 4019. Compared 1109809 event pairs, 15444 based on Foata normal form. 3210/115360 useless extension candidates. Maximal degree in co-relation 55694. Up to 105758 conditions per place. [2023-08-26 22:32:05,324 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 118 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2023-08-26 22:32:05,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 129 transitions, 608 flow [2023-08-26 22:32:05,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:32:05,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:32:05,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 780 transitions. [2023-08-26 22:32:05,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2023-08-26 22:32:05,326 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 780 transitions. [2023-08-26 22:32:05,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 780 transitions. [2023-08-26 22:32:05,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:32:05,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 780 transitions. [2023-08-26 22:32:05,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:05,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 364.0) internal successors, (1820), 5 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:05,331 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 364.0) internal successors, (1820), 5 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:05,331 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 234 flow. Second operand 4 states and 780 transitions. [2023-08-26 22:32:05,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 129 transitions, 608 flow [2023-08-26 22:32:05,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 129 transitions, 604 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:32:05,345 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 232 flow [2023-08-26 22:32:05,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2023-08-26 22:32:05,346 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2023-08-26 22:32:05,346 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 232 flow [2023-08-26 22:32:05,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:05,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:32:05,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:32:05,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 22:32:05,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-26 22:32:05,556 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:32:05,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:32:05,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2005943990, now seen corresponding path program 1 times [2023-08-26 22:32:05,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:32:05,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328168981] [2023-08-26 22:32:05,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:32:05,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:32:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:32:05,621 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 22:32:05,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:32:05,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328168981] [2023-08-26 22:32:05,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328168981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:32:05,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:32:05,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:32:05,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891299817] [2023-08-26 22:32:05,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:32:05,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:32:05,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:32:05,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:32:05,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:32:05,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 364 [2023-08-26 22:32:05,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 232 flow. Second operand has 5 states, 5 states have (on average 156.8) internal successors, (784), 5 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:05,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:32:05,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 364 [2023-08-26 22:32:05,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:32:15,925 INFO L124 PetriNetUnfolderBase]: 138007/196177 cut-off events. [2023-08-26 22:32:15,925 INFO L125 PetriNetUnfolderBase]: For 55296/55296 co-relation queries the response was YES. [2023-08-26 22:32:16,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451789 conditions, 196177 events. 138007/196177 cut-off events. For 55296/55296 co-relation queries the response was YES. Maximal size of possible extension queue 6221. Compared 1530466 event pairs, 33784 based on Foata normal form. 0/158165 useless extension candidates. Maximal degree in co-relation 359606. Up to 115733 conditions per place. [2023-08-26 22:32:16,921 INFO L140 encePairwiseOnDemand]: 344/364 looper letters, 215 selfloop transitions, 29 changer transitions 0/252 dead transitions. [2023-08-26 22:32:16,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 252 transitions, 1267 flow [2023-08-26 22:32:16,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:32:16,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:32:16,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1334 transitions. [2023-08-26 22:32:16,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235478806907379 [2023-08-26 22:32:16,924 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1334 transitions. [2023-08-26 22:32:16,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1334 transitions. [2023-08-26 22:32:16,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:32:16,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1334 transitions. [2023-08-26 22:32:16,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.57142857142858) internal successors, (1334), 7 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:16,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 364.0) internal successors, (2912), 8 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:16,931 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 364.0) internal successors, (2912), 8 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:16,931 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 232 flow. Second operand 7 states and 1334 transitions. [2023-08-26 22:32:16,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 252 transitions, 1267 flow [2023-08-26 22:32:16,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 252 transitions, 1255 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:32:16,951 INFO L231 Difference]: Finished difference. Result has 91 places, 99 transitions, 480 flow [2023-08-26 22:32:16,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=480, PETRI_PLACES=91, PETRI_TRANSITIONS=99} [2023-08-26 22:32:16,952 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 15 predicate places. [2023-08-26 22:32:16,952 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 99 transitions, 480 flow [2023-08-26 22:32:16,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.8) internal successors, (784), 5 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:16,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:32:16,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:32:16,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 22:32:16,953 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:32:16,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:32:16,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2005944100, now seen corresponding path program 1 times [2023-08-26 22:32:16,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:32:16,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483612302] [2023-08-26 22:32:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:32:16,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:32:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:32:17,003 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 22:32:17,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:32:17,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483612302] [2023-08-26 22:32:17,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483612302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:32:17,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:32:17,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:32:17,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397750961] [2023-08-26 22:32:17,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:32:17,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:32:17,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:32:17,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:32:17,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:32:17,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 364 [2023-08-26 22:32:17,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 99 transitions, 480 flow. Second operand has 5 states, 5 states have (on average 156.8) internal successors, (784), 5 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:17,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:32:17,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 364 [2023-08-26 22:32:17,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:32:30,092 INFO L124 PetriNetUnfolderBase]: 143632/208777 cut-off events. [2023-08-26 22:32:30,092 INFO L125 PetriNetUnfolderBase]: For 191583/191583 co-relation queries the response was YES. [2023-08-26 22:32:30,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576213 conditions, 208777 events. 143632/208777 cut-off events. For 191583/191583 co-relation queries the response was YES. Maximal size of possible extension queue 6930. Compared 1720610 event pairs, 32186 based on Foata normal form. 8103/203118 useless extension candidates. Maximal degree in co-relation 470645. Up to 132609 conditions per place. [2023-08-26 22:32:31,364 INFO L140 encePairwiseOnDemand]: 344/364 looper letters, 235 selfloop transitions, 35 changer transitions 0/278 dead transitions. [2023-08-26 22:32:31,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 278 transitions, 1705 flow [2023-08-26 22:32:31,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:32:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:32:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1334 transitions. [2023-08-26 22:32:31,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235478806907379 [2023-08-26 22:32:31,368 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1334 transitions. [2023-08-26 22:32:31,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1334 transitions. [2023-08-26 22:32:31,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:32:31,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1334 transitions. [2023-08-26 22:32:31,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.57142857142858) internal successors, (1334), 7 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:31,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 364.0) internal successors, (2912), 8 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:31,375 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 364.0) internal successors, (2912), 8 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:31,375 INFO L175 Difference]: Start difference. First operand has 91 places, 99 transitions, 480 flow. Second operand 7 states and 1334 transitions. [2023-08-26 22:32:31,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 278 transitions, 1705 flow [2023-08-26 22:32:31,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 278 transitions, 1699 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:32:31,760 INFO L231 Difference]: Finished difference. Result has 100 places, 125 transitions, 860 flow [2023-08-26 22:32:31,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=860, PETRI_PLACES=100, PETRI_TRANSITIONS=125} [2023-08-26 22:32:31,760 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2023-08-26 22:32:31,761 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 125 transitions, 860 flow [2023-08-26 22:32:31,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.8) internal successors, (784), 5 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:31,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:32:31,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:32:31,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 22:32:31,761 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:32:31,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:32:31,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1451875282, now seen corresponding path program 1 times [2023-08-26 22:32:31,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:32:31,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305187386] [2023-08-26 22:32:31,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:32:31,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:32:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:32:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:32:31,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:32:31,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305187386] [2023-08-26 22:32:31,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305187386] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:32:31,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65548971] [2023-08-26 22:32:31,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:32:31,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:32:31,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:32:31,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:32:31,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 22:32:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:32:31,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:32:31,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:32:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:32:31,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:32:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:32:31,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65548971] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:32:31,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:32:31,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:32:31,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592024243] [2023-08-26 22:32:31,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:32:31,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:32:31,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:32:31,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:32:31,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:32:31,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 364 [2023-08-26 22:32:31,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 125 transitions, 860 flow. Second operand has 7 states, 7 states have (on average 168.71428571428572) internal successors, (1181), 7 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:31,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:32:31,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 364 [2023-08-26 22:32:31,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:32:35,911 INFO L124 PetriNetUnfolderBase]: 32953/54281 cut-off events. [2023-08-26 22:32:35,911 INFO L125 PetriNetUnfolderBase]: For 149431/149431 co-relation queries the response was YES. [2023-08-26 22:32:36,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188793 conditions, 54281 events. 32953/54281 cut-off events. For 149431/149431 co-relation queries the response was YES. Maximal size of possible extension queue 2348. Compared 474425 event pairs, 1201 based on Foata normal form. 5276/59557 useless extension candidates. Maximal degree in co-relation 179881. Up to 34534 conditions per place. [2023-08-26 22:32:36,282 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 257 selfloop transitions, 4 changer transitions 0/267 dead transitions. [2023-08-26 22:32:36,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 267 transitions, 2485 flow [2023-08-26 22:32:36,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:32:36,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:32:36,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1128 transitions. [2023-08-26 22:32:36,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2023-08-26 22:32:36,285 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1128 transitions. [2023-08-26 22:32:36,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1128 transitions. [2023-08-26 22:32:36,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:32:36,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1128 transitions. [2023-08-26 22:32:36,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:36,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:36,292 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:36,292 INFO L175 Difference]: Start difference. First operand has 100 places, 125 transitions, 860 flow. Second operand 6 states and 1128 transitions. [2023-08-26 22:32:36,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 267 transitions, 2485 flow [2023-08-26 22:32:36,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 267 transitions, 2456 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-26 22:32:36,399 INFO L231 Difference]: Finished difference. Result has 90 places, 110 transitions, 812 flow [2023-08-26 22:32:36,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=812, PETRI_PLACES=90, PETRI_TRANSITIONS=110} [2023-08-26 22:32:36,400 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 14 predicate places. [2023-08-26 22:32:36,400 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 110 transitions, 812 flow [2023-08-26 22:32:36,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 168.71428571428572) internal successors, (1181), 7 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:36,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:32:36,400 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 22:32:36,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 22:32:36,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 22:32:36,607 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:32:36,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:32:36,607 INFO L85 PathProgramCache]: Analyzing trace with hash -801620974, now seen corresponding path program 1 times [2023-08-26 22:32:36,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:32:36,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035671037] [2023-08-26 22:32:36,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:32:36,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:32:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:32:36,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:32:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:32:36,640 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:32:36,641 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:32:36,641 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-26 22:32:36,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-26 22:32:36,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-26 22:32:36,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-26 22:32:36,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (17 of 22 remaining) [2023-08-26 22:32:36,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-26 22:32:36,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-26 22:32:36,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-26 22:32:36,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-26 22:32:36,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-26 22:32:36,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-26 22:32:36,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-26 22:32:36,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2023-08-26 22:32:36,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2023-08-26 22:32:36,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-26 22:32:36,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-26 22:32:36,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-26 22:32:36,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-26 22:32:36,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-26 22:32:36,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-26 22:32:36,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-26 22:32:36,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-26 22:32:36,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 22:32:36,643 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:32:36,644 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:32:36,644 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 22:32:36,671 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 22:32:36,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 245 transitions, 534 flow [2023-08-26 22:32:36,746 INFO L124 PetriNetUnfolderBase]: 86/686 cut-off events. [2023-08-26 22:32:36,746 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:32:36,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 686 events. 86/686 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2753 event pairs, 6 based on Foata normal form. 0/541 useless extension candidates. Maximal degree in co-relation 463. Up to 32 conditions per place. [2023-08-26 22:32:36,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 245 transitions, 534 flow [2023-08-26 22:32:36,757 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 245 transitions, 534 flow [2023-08-26 22:32:36,757 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:32:36,757 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 245 transitions, 534 flow [2023-08-26 22:32:36,757 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 245 transitions, 534 flow [2023-08-26 22:32:36,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 245 transitions, 534 flow [2023-08-26 22:32:36,820 INFO L124 PetriNetUnfolderBase]: 86/686 cut-off events. [2023-08-26 22:32:36,821 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:32:36,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 686 events. 86/686 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2753 event pairs, 6 based on Foata normal form. 0/541 useless extension candidates. Maximal degree in co-relation 463. Up to 32 conditions per place. [2023-08-26 22:32:36,846 INFO L119 LiptonReduction]: Number of co-enabled transitions 36632 [2023-08-26 22:32:39,542 INFO L134 LiptonReduction]: Checked pairs total: 92978 [2023-08-26 22:32:39,542 INFO L136 LiptonReduction]: Total number of compositions: 182 [2023-08-26 22:32:39,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:32:39,543 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;@693cc07f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:32:39,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-26 22:32:39,545 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:32:39,545 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-26 22:32:39,545 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:32:39,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:32:39,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:32:39,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-26 22:32:39,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:32:39,546 INFO L85 PathProgramCache]: Analyzing trace with hash 52224479, now seen corresponding path program 1 times [2023-08-26 22:32:39,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:32:39,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813643949] [2023-08-26 22:32:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:32:39,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:32:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:32:39,565 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 22:32:39,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:32:39,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813643949] [2023-08-26 22:32:39,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813643949] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:32:39,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:32:39,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:32:39,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455147386] [2023-08-26 22:32:39,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:32:39,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:32:39,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:32:39,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:32:39,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:32:39,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 427 [2023-08-26 22:32:39,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 115 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:39,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:32:39,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 427 [2023-08-26 22:32:39,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand