./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-100.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind3-100.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 51e84781857cfc73ae131a38742d9d6222707e54f6a010e2853f82c7770f5a96 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:11:08,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:11:08,095 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:11:08,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:11:08,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:11:08,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:11:08,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:11:08,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:11:08,120 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:11:08,120 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:11:08,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:11:08,121 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:11:08,122 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:11:08,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:11:08,122 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:11:08,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:11:08,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:11:08,123 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:11:08,124 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:11:08,124 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:11:08,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:11:08,125 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:11:08,125 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:11:08,126 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:11:08,126 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:11:08,126 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:11:08,127 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:11:08,127 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:11:08,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:11:08,128 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:11:08,128 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:11:08,128 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:11:08,129 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:11:08,129 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:11:08,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:11:08,130 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:11:08,130 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:11:08,130 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:11:08,131 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:11:08,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:11:08,131 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:11:08,132 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:11:08,132 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:11:08,132 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:11:08,133 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51e84781857cfc73ae131a38742d9d6222707e54f6a010e2853f82c7770f5a96 [2024-11-19 14:11:08,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:11:08,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:11:08,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:11:08,471 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:11:08,472 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:11:08,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-100.i [2024-11-19 14:11:09,832 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:11:10,088 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:11:10,090 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-100.i [2024-11-19 14:11:10,110 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3223cc979/b222b9d4141e456caed1abd8c846d368/FLAGe2d3fb4d6 [2024-11-19 14:11:10,122 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3223cc979/b222b9d4141e456caed1abd8c846d368 [2024-11-19 14:11:10,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:11:10,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:11:10,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:11:10,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:11:10,135 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:11:10,136 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:11:10" (1/1) ... [2024-11-19 14:11:10,136 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df08796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10, skipping insertion in model container [2024-11-19 14:11:10,137 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:11:10" (1/1) ... [2024-11-19 14:11:10,189 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:11:10,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:11:10,559 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:11:10,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:11:10,661 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:11:10,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10 WrapperNode [2024-11-19 14:11:10,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:11:10,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:11:10,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:11:10,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:11:10,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10" (1/1) ... [2024-11-19 14:11:10,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10" (1/1) ... [2024-11-19 14:11:10,709 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2024-11-19 14:11:10,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:11:10,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:11:10,711 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:11:10,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:11:10,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10" (1/1) ... [2024-11-19 14:11:10,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10" (1/1) ... [2024-11-19 14:11:10,726 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10" (1/1) ... [2024-11-19 14:11:10,750 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 14:11:10,750 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10" (1/1) ... [2024-11-19 14:11:10,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10" (1/1) ... [2024-11-19 14:11:10,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10" (1/1) ... [2024-11-19 14:11:10,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10" (1/1) ... [2024-11-19 14:11:10,768 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10" (1/1) ... [2024-11-19 14:11:10,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10" (1/1) ... [2024-11-19 14:11:10,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:11:10,775 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:11:10,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:11:10,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:11:10,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10" (1/1) ... [2024-11-19 14:11:10,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:11:10,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:10,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:11:10,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:11:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:11:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-19 14:11:10,864 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-19 14:11:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-19 14:11:10,865 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-19 14:11:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:11:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:11:10,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:11:10,867 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:11:11,025 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:11:11,027 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:11:11,160 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:11:11,160 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:11:11,255 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:11:11,255 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 14:11:11,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:11:11 BoogieIcfgContainer [2024-11-19 14:11:11,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:11:11,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:11:11,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:11:11,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:11:11,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:11:10" (1/3) ... [2024-11-19 14:11:11,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f60375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:11:11, skipping insertion in model container [2024-11-19 14:11:11,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:11:10" (2/3) ... [2024-11-19 14:11:11,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f60375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:11:11, skipping insertion in model container [2024-11-19 14:11:11,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:11:11" (3/3) ... [2024-11-19 14:11:11,267 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind3-100.i [2024-11-19 14:11:11,283 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:11:11,283 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 14:11:11,283 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:11:11,330 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 14:11:11,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 74 flow [2024-11-19 14:11:11,409 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2024-11-19 14:11:11,409 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:11:11,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 2/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 135 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2024-11-19 14:11:11,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 74 flow [2024-11-19 14:11:11,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 71 flow [2024-11-19 14:11:11,430 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:11:11,439 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@180ed495, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:11:11,439 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-19 14:11:11,445 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:11:11,447 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-19 14:11:11,447 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:11:11,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:11,448 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:11,449 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-19 14:11:11,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:11,454 INFO L85 PathProgramCache]: Analyzing trace with hash 998420578, now seen corresponding path program 1 times [2024-11-19 14:11:11,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:11,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457005937] [2024-11-19 14:11:11,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:11,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:11,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:11,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457005937] [2024-11-19 14:11:11,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457005937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:11,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:11,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:11,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637497802] [2024-11-19 14:11:11,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:11,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:11:11,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:11,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:11:11,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:11,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-19 14:11:11,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:11,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:11,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-19 14:11:11,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:11,994 INFO L124 PetriNetUnfolderBase]: 106/260 cut-off events. [2024-11-19 14:11:11,994 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 14:11:11,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 260 events. 106/260 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1134 event pairs, 13 based on Foata normal form. 29/254 useless extension candidates. Maximal degree in co-relation 419. Up to 160 conditions per place. [2024-11-19 14:11:11,999 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 28 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2024-11-19 14:11:11,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 156 flow [2024-11-19 14:11:12,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:11:12,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:11:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-11-19 14:11:12,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5696969696969697 [2024-11-19 14:11:12,010 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 71 flow. Second operand 5 states and 94 transitions. [2024-11-19 14:11:12,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 156 flow [2024-11-19 14:11:12,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:12,014 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 72 flow [2024-11-19 14:11:12,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-11-19 14:11:12,019 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-11-19 14:11:12,020 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 72 flow [2024-11-19 14:11:12,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:12,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:12,020 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:12,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:11:12,021 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-19 14:11:12,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:12,022 INFO L85 PathProgramCache]: Analyzing trace with hash 998420381, now seen corresponding path program 1 times [2024-11-19 14:11:12,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:12,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896847880] [2024-11-19 14:11:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:12,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:12,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:12,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896847880] [2024-11-19 14:11:12,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896847880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:12,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:12,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:11:12,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60117090] [2024-11-19 14:11:12,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:12,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:11:12,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:12,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:11:12,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:11:12,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2024-11-19 14:11:12,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:12,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:12,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2024-11-19 14:11:12,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:12,171 INFO L124 PetriNetUnfolderBase]: 52/151 cut-off events. [2024-11-19 14:11:12,171 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-19 14:11:12,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 151 events. 52/151 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 619 event pairs, 30 based on Foata normal form. 3/134 useless extension candidates. Maximal degree in co-relation 228. Up to 102 conditions per place. [2024-11-19 14:11:12,172 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 17 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-11-19 14:11:12,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 118 flow [2024-11-19 14:11:12,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:11:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:11:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-19 14:11:12,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6767676767676768 [2024-11-19 14:11:12,176 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 72 flow. Second operand 3 states and 67 transitions. [2024-11-19 14:11:12,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 118 flow [2024-11-19 14:11:12,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:11:12,180 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 76 flow [2024-11-19 14:11:12,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-11-19 14:11:12,181 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-11-19 14:11:12,181 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 76 flow [2024-11-19 14:11:12,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:12,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:12,182 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:12,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 14:11:12,183 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-19 14:11:12,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash 886267104, now seen corresponding path program 1 times [2024-11-19 14:11:12,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:12,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409390351] [2024-11-19 14:11:12,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:12,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:12,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:12,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409390351] [2024-11-19 14:11:12,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409390351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:12,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:12,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:12,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747852192] [2024-11-19 14:11:12,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:12,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:11:12,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:12,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:11:12,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:12,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-19 14:11:12,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:12,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:12,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-19 14:11:12,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:12,465 INFO L124 PetriNetUnfolderBase]: 72/195 cut-off events. [2024-11-19 14:11:12,469 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-19 14:11:12,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 195 events. 72/195 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 785 event pairs, 8 based on Foata normal form. 15/196 useless extension candidates. Maximal degree in co-relation 324. Up to 70 conditions per place. [2024-11-19 14:11:12,471 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 31 selfloop transitions, 3 changer transitions 7/49 dead transitions. [2024-11-19 14:11:12,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 210 flow [2024-11-19 14:11:12,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:11:12,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:11:12,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-11-19 14:11:12,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6242424242424243 [2024-11-19 14:11:12,477 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 76 flow. Second operand 5 states and 103 transitions. [2024-11-19 14:11:12,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 210 flow [2024-11-19 14:11:12,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 49 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:12,479 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 69 flow [2024-11-19 14:11:12,479 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=69, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2024-11-19 14:11:12,484 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2024-11-19 14:11:12,484 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 69 flow [2024-11-19 14:11:12,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:12,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:12,485 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:12,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 14:11:12,485 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-19 14:11:12,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:12,489 INFO L85 PathProgramCache]: Analyzing trace with hash 887257127, now seen corresponding path program 1 times [2024-11-19 14:11:12,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:12,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83077156] [2024-11-19 14:11:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:12,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:12,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:12,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83077156] [2024-11-19 14:11:12,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83077156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:12,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:12,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:12,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981311618] [2024-11-19 14:11:12,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:12,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:11:12,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:12,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:11:12,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:11:12,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2024-11-19 14:11:12,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:12,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:12,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2024-11-19 14:11:12,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:12,635 INFO L124 PetriNetUnfolderBase]: 32/95 cut-off events. [2024-11-19 14:11:12,635 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-19 14:11:12,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 95 events. 32/95 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 297 event pairs, 16 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 187. Up to 58 conditions per place. [2024-11-19 14:11:12,638 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 14 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-11-19 14:11:12,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 108 flow [2024-11-19 14:11:12,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:11:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:11:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-11-19 14:11:12,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-11-19 14:11:12,640 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 69 flow. Second operand 4 states and 70 transitions. [2024-11-19 14:11:12,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 108 flow [2024-11-19 14:11:12,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:11:12,643 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 64 flow [2024-11-19 14:11:12,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2024-11-19 14:11:12,644 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2024-11-19 14:11:12,644 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 64 flow [2024-11-19 14:11:12,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:12,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:12,646 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:12,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:11:12,646 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-19 14:11:12,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:12,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1293268734, now seen corresponding path program 1 times [2024-11-19 14:11:12,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:12,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922017528] [2024-11-19 14:11:12,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:12,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:11:12,661 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:11:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:11:12,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:11:12,683 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 14:11:12,684 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-19 14:11:12,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2024-11-19 14:11:12,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2024-11-19 14:11:12,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 16 remaining) [2024-11-19 14:11:12,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2024-11-19 14:11:12,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2024-11-19 14:11:12,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2024-11-19 14:11:12,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2024-11-19 14:11:12,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2024-11-19 14:11:12,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2024-11-19 14:11:12,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2024-11-19 14:11:12,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2024-11-19 14:11:12,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2024-11-19 14:11:12,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2024-11-19 14:11:12,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2024-11-19 14:11:12,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2024-11-19 14:11:12,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:11:12,690 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-19 14:11:12,692 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 14:11:12,692 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 14:11:12,716 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 14:11:12,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 53 transitions, 126 flow [2024-11-19 14:11:12,725 INFO L124 PetriNetUnfolderBase]: 3/75 cut-off events. [2024-11-19 14:11:12,725 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:11:12,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 75 events. 3/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 245 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2024-11-19 14:11:12,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 53 transitions, 126 flow [2024-11-19 14:11:12,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 40 transitions, 93 flow [2024-11-19 14:11:12,728 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:11:12,729 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@180ed495, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:11:12,729 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-19 14:11:12,731 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:11:12,731 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-19 14:11:12,731 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:11:12,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:12,731 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:12,731 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-19 14:11:12,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:12,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1935551612, now seen corresponding path program 1 times [2024-11-19 14:11:12,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:12,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11476716] [2024-11-19 14:11:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:12,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:12,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:12,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:12,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11476716] [2024-11-19 14:11:12,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11476716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:12,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:12,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:11:12,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785425016] [2024-11-19 14:11:12,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:12,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:11:12,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:12,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:11:12,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:11:12,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-19 14:11:12,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:12,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:12,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-19 14:11:12,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:12,873 INFO L124 PetriNetUnfolderBase]: 304/714 cut-off events. [2024-11-19 14:11:12,873 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-19 14:11:12,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 714 events. 304/714 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4523 event pairs, 150 based on Foata normal form. 3/596 useless extension candidates. Maximal degree in co-relation 389. Up to 507 conditions per place. [2024-11-19 14:11:12,880 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 24 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-19 14:11:12,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 159 flow [2024-11-19 14:11:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:11:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:11:12,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-19 14:11:12,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6729559748427673 [2024-11-19 14:11:12,884 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 93 flow. Second operand 3 states and 107 transitions. [2024-11-19 14:11:12,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 159 flow [2024-11-19 14:11:12,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:12,886 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 113 flow [2024-11-19 14:11:12,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-19 14:11:12,889 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-19 14:11:12,890 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 113 flow [2024-11-19 14:11:12,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:12,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:12,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:12,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:11:12,891 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-19 14:11:12,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:12,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1935551415, now seen corresponding path program 1 times [2024-11-19 14:11:12,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:12,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077143165] [2024-11-19 14:11:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:12,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:12,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:12,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077143165] [2024-11-19 14:11:12,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077143165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:12,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:12,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:12,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810688286] [2024-11-19 14:11:12,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:12,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:11:12,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:12,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:11:12,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:12,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-19 14:11:12,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:12,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:12,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-19 14:11:12,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:13,273 INFO L124 PetriNetUnfolderBase]: 1102/2015 cut-off events. [2024-11-19 14:11:13,273 INFO L125 PetriNetUnfolderBase]: For 87/144 co-relation queries the response was YES. [2024-11-19 14:11:13,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3945 conditions, 2015 events. 1102/2015 cut-off events. For 87/144 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11807 event pairs, 104 based on Foata normal form. 161/1984 useless extension candidates. Maximal degree in co-relation 3824. Up to 746 conditions per place. [2024-11-19 14:11:13,286 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 68 selfloop transitions, 7 changer transitions 0/90 dead transitions. [2024-11-19 14:11:13,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 90 transitions, 385 flow [2024-11-19 14:11:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-11-19 14:11:13,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-11-19 14:11:13,289 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 113 flow. Second operand 6 states and 198 transitions. [2024-11-19 14:11:13,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 90 transitions, 385 flow [2024-11-19 14:11:13,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 90 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:13,291 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 153 flow [2024-11-19 14:11:13,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-19 14:11:13,292 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2024-11-19 14:11:13,293 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 153 flow [2024-11-19 14:11:13,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:13,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:13,294 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:13,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:11:13,294 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-19 14:11:13,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:13,295 INFO L85 PathProgramCache]: Analyzing trace with hash 128475355, now seen corresponding path program 1 times [2024-11-19 14:11:13,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:13,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434362200] [2024-11-19 14:11:13,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:13,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:13,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:13,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434362200] [2024-11-19 14:11:13,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434362200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:13,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:13,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:13,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566317888] [2024-11-19 14:11:13,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:13,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:11:13,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:13,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:11:13,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:11:13,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-19 14:11:13,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:13,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:13,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-19 14:11:13,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:13,484 INFO L124 PetriNetUnfolderBase]: 551/1093 cut-off events. [2024-11-19 14:11:13,485 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2024-11-19 14:11:13,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2300 conditions, 1093 events. 551/1093 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7253 event pairs, 459 based on Foata normal form. 1/904 useless extension candidates. Maximal degree in co-relation 1655. Up to 899 conditions per place. [2024-11-19 14:11:13,492 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 25 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-19 14:11:13,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 48 transitions, 217 flow [2024-11-19 14:11:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:11:13,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:11:13,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-19 14:11:13,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5471698113207547 [2024-11-19 14:11:13,494 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 153 flow. Second operand 4 states and 116 transitions. [2024-11-19 14:11:13,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 48 transitions, 217 flow [2024-11-19 14:11:13,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 48 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:13,496 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 154 flow [2024-11-19 14:11:13,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-11-19 14:11:13,497 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2024-11-19 14:11:13,497 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 154 flow [2024-11-19 14:11:13,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:13,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:13,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:13,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 14:11:13,498 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-19 14:11:13,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:13,499 INFO L85 PathProgramCache]: Analyzing trace with hash 127448590, now seen corresponding path program 1 times [2024-11-19 14:11:13,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:13,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006204105] [2024-11-19 14:11:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:13,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:13,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:13,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006204105] [2024-11-19 14:11:13,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006204105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:13,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:13,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:13,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017487014] [2024-11-19 14:11:13,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:13,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:11:13,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:13,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:11:13,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:13,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-19 14:11:13,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:13,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:13,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-19 14:11:13,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:13,763 INFO L124 PetriNetUnfolderBase]: 835/1522 cut-off events. [2024-11-19 14:11:13,763 INFO L125 PetriNetUnfolderBase]: For 715/805 co-relation queries the response was YES. [2024-11-19 14:11:13,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3537 conditions, 1522 events. 835/1522 cut-off events. For 715/805 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8423 event pairs, 146 based on Foata normal form. 87/1501 useless extension candidates. Maximal degree in co-relation 3463. Up to 737 conditions per place. [2024-11-19 14:11:13,773 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 64 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2024-11-19 14:11:13,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 416 flow [2024-11-19 14:11:13,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:13,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-11-19 14:11:13,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6069182389937107 [2024-11-19 14:11:13,775 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 154 flow. Second operand 6 states and 193 transitions. [2024-11-19 14:11:13,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 416 flow [2024-11-19 14:11:13,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 402 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:11:13,781 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 167 flow [2024-11-19 14:11:13,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=167, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2024-11-19 14:11:13,783 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2024-11-19 14:11:13,783 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 167 flow [2024-11-19 14:11:13,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:13,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:13,783 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:13,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 14:11:13,784 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-19 14:11:13,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:13,784 INFO L85 PathProgramCache]: Analyzing trace with hash 798379324, now seen corresponding path program 1 times [2024-11-19 14:11:13,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:13,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723855440] [2024-11-19 14:11:13,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:13,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:13,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:13,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723855440] [2024-11-19 14:11:13,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723855440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:13,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241888866] [2024-11-19 14:11:13,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:13,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:13,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:13,833 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) [2024-11-19 14:11:13,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:11:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:13,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 14:11:13,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:13,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:11:13,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241888866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:13,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:11:13,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-19 14:11:13,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889426944] [2024-11-19 14:11:13,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:13,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:11:13,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:13,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:11:13,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:13,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-19 14:11:13,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:13,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:13,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-19 14:11:13,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:14,098 INFO L124 PetriNetUnfolderBase]: 465/976 cut-off events. [2024-11-19 14:11:14,098 INFO L125 PetriNetUnfolderBase]: For 557/559 co-relation queries the response was YES. [2024-11-19 14:11:14,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2059 conditions, 976 events. 465/976 cut-off events. For 557/559 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6574 event pairs, 145 based on Foata normal form. 16/848 useless extension candidates. Maximal degree in co-relation 1039. Up to 578 conditions per place. [2024-11-19 14:11:14,104 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 28 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2024-11-19 14:11:14,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 259 flow [2024-11-19 14:11:14,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:11:14,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:11:14,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-19 14:11:14,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2024-11-19 14:11:14,105 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 167 flow. Second operand 4 states and 134 transitions. [2024-11-19 14:11:14,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 259 flow [2024-11-19 14:11:14,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 243 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 14:11:14,108 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 157 flow [2024-11-19 14:11:14,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-11-19 14:11:14,111 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2024-11-19 14:11:14,111 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 157 flow [2024-11-19 14:11:14,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:14,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:14,111 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:14,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:11:14,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 14:11:14,316 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-19 14:11:14,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:14,317 INFO L85 PathProgramCache]: Analyzing trace with hash 798379745, now seen corresponding path program 1 times [2024-11-19 14:11:14,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:14,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926814485] [2024-11-19 14:11:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:14,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:11:14,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:14,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926814485] [2024-11-19 14:11:14,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926814485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:14,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:14,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:14,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437196328] [2024-11-19 14:11:14,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:14,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:11:14,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:14,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:11:14,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:14,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-19 14:11:14,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:14,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:14,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-19 14:11:14,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:14,633 INFO L124 PetriNetUnfolderBase]: 1070/1926 cut-off events. [2024-11-19 14:11:14,633 INFO L125 PetriNetUnfolderBase]: For 983/1017 co-relation queries the response was YES. [2024-11-19 14:11:14,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4577 conditions, 1926 events. 1070/1926 cut-off events. For 983/1017 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11103 event pairs, 120 based on Foata normal form. 60/1878 useless extension candidates. Maximal degree in co-relation 3026. Up to 565 conditions per place. [2024-11-19 14:11:14,643 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 65 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2024-11-19 14:11:14,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 441 flow [2024-11-19 14:11:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:14,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:14,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-11-19 14:11:14,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5974842767295597 [2024-11-19 14:11:14,648 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 157 flow. Second operand 6 states and 190 transitions. [2024-11-19 14:11:14,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 441 flow [2024-11-19 14:11:14,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 433 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:11:14,655 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 214 flow [2024-11-19 14:11:14,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2024-11-19 14:11:14,656 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2024-11-19 14:11:14,656 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 214 flow [2024-11-19 14:11:14,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:14,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:14,656 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:14,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 14:11:14,657 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-19 14:11:14,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:14,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1020044455, now seen corresponding path program 1 times [2024-11-19 14:11:14,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:14,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474151619] [2024-11-19 14:11:14,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:14,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:14,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:14,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:14,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474151619] [2024-11-19 14:11:14,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474151619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:14,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199831751] [2024-11-19 14:11:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:14,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:14,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:14,708 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) [2024-11-19 14:11:14,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:11:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:14,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 14:11:14,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:14,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:11:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:14,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199831751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:11:14,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:11:14,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-19 14:11:14,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996540829] [2024-11-19 14:11:14,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:11:14,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 14:11:14,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:14,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 14:11:14,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:11:14,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-19 14:11:14,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:14,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:14,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-19 14:11:14,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:14,954 INFO L124 PetriNetUnfolderBase]: 539/1147 cut-off events. [2024-11-19 14:11:14,955 INFO L125 PetriNetUnfolderBase]: For 380/380 co-relation queries the response was YES. [2024-11-19 14:11:14,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2473 conditions, 1147 events. 539/1147 cut-off events. For 380/380 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8000 event pairs, 119 based on Foata normal form. 0/1017 useless extension candidates. Maximal degree in co-relation 1800. Up to 701 conditions per place. [2024-11-19 14:11:14,961 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 35 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2024-11-19 14:11:14,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 360 flow [2024-11-19 14:11:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:11:14,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:11:14,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-11-19 14:11:14,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-11-19 14:11:14,963 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 214 flow. Second operand 5 states and 165 transitions. [2024-11-19 14:11:14,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 360 flow [2024-11-19 14:11:14,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 64 transitions, 357 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:14,965 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 222 flow [2024-11-19 14:11:14,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2024-11-19 14:11:14,966 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2024-11-19 14:11:14,967 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 222 flow [2024-11-19 14:11:14,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:14,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:14,968 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:14,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:11:15,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 14:11:15,169 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-19 14:11:15,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:15,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1019041340, now seen corresponding path program 1 times [2024-11-19 14:11:15,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:15,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834798091] [2024-11-19 14:11:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:15,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:11:15,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:15,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834798091] [2024-11-19 14:11:15,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834798091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:15,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:15,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:15,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368133388] [2024-11-19 14:11:15,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:15,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:11:15,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:15,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:11:15,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:11:15,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-11-19 14:11:15,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:15,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:15,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-11-19 14:11:15,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:15,447 INFO L124 PetriNetUnfolderBase]: 1013/1938 cut-off events. [2024-11-19 14:11:15,448 INFO L125 PetriNetUnfolderBase]: For 831/831 co-relation queries the response was YES. [2024-11-19 14:11:15,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4369 conditions, 1938 events. 1013/1938 cut-off events. For 831/831 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 13768 event pairs, 651 based on Foata normal form. 46/1767 useless extension candidates. Maximal degree in co-relation 3196. Up to 1137 conditions per place. [2024-11-19 14:11:15,460 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 39 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2024-11-19 14:11:15,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 368 flow [2024-11-19 14:11:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:11:15,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:11:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-19 14:11:15,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6792452830188679 [2024-11-19 14:11:15,461 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 222 flow. Second operand 4 states and 144 transitions. [2024-11-19 14:11:15,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 368 flow [2024-11-19 14:11:15,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 352 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-19 14:11:15,465 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 228 flow [2024-11-19 14:11:15,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2024-11-19 14:11:15,467 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 21 predicate places. [2024-11-19 14:11:15,467 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 228 flow [2024-11-19 14:11:15,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:15,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:15,467 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:15,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 14:11:15,468 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-19 14:11:15,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:15,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1020031363, now seen corresponding path program 1 times [2024-11-19 14:11:15,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:15,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444807257] [2024-11-19 14:11:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:15,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:11:15,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:15,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444807257] [2024-11-19 14:11:15,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444807257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:15,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:15,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:15,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186214783] [2024-11-19 14:11:15,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:15,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:11:15,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:15,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:11:15,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:15,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-19 14:11:15,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:15,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:15,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-19 14:11:15,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:15,848 INFO L124 PetriNetUnfolderBase]: 1538/2794 cut-off events. [2024-11-19 14:11:15,849 INFO L125 PetriNetUnfolderBase]: For 3406/3542 co-relation queries the response was YES. [2024-11-19 14:11:15,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7687 conditions, 2794 events. 1538/2794 cut-off events. For 3406/3542 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17470 event pairs, 330 based on Foata normal form. 92/2862 useless extension candidates. Maximal degree in co-relation 5276. Up to 1394 conditions per place. [2024-11-19 14:11:15,865 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 73 selfloop transitions, 7 changer transitions 0/93 dead transitions. [2024-11-19 14:11:15,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 544 flow [2024-11-19 14:11:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-11-19 14:11:15,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5911949685534591 [2024-11-19 14:11:15,868 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 228 flow. Second operand 6 states and 188 transitions. [2024-11-19 14:11:15,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 544 flow [2024-11-19 14:11:15,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 532 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:11:15,894 INFO L231 Difference]: Finished difference. Result has 71 places, 48 transitions, 232 flow [2024-11-19 14:11:15,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=71, PETRI_TRANSITIONS=48} [2024-11-19 14:11:15,896 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 24 predicate places. [2024-11-19 14:11:15,896 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 48 transitions, 232 flow [2024-11-19 14:11:15,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:15,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:15,897 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:15,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 14:11:15,897 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2024-11-19 14:11:15,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1010168154, now seen corresponding path program 1 times [2024-11-19 14:11:15,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:15,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873615227] [2024-11-19 14:11:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:15,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:11:15,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:11:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:11:15,919 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:11:15,921 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 14:11:15,921 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-19 14:11:15,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2024-11-19 14:11:15,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2024-11-19 14:11:15,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 22 remaining) [2024-11-19 14:11:15,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2024-11-19 14:11:15,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2024-11-19 14:11:15,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2024-11-19 14:11:15,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2024-11-19 14:11:15,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2024-11-19 14:11:15,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2024-11-19 14:11:15,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2024-11-19 14:11:15,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2024-11-19 14:11:15,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2024-11-19 14:11:15,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2024-11-19 14:11:15,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2024-11-19 14:11:15,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2024-11-19 14:11:15,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2024-11-19 14:11:15,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2024-11-19 14:11:15,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2024-11-19 14:11:15,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2024-11-19 14:11:15,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2024-11-19 14:11:15,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2024-11-19 14:11:15,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 14:11:15,925 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:15,925 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 14:11:15,926 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 14:11:15,956 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 14:11:15,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 73 transitions, 182 flow [2024-11-19 14:11:15,965 INFO L124 PetriNetUnfolderBase]: 4/103 cut-off events. [2024-11-19 14:11:15,965 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 14:11:15,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 103 events. 4/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 339 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 120. Up to 8 conditions per place. [2024-11-19 14:11:15,965 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 73 transitions, 182 flow [2024-11-19 14:11:15,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 48 transitions, 117 flow [2024-11-19 14:11:15,967 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:11:15,967 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@180ed495, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:11:15,968 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-19 14:11:15,969 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:11:15,969 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-19 14:11:15,969 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:11:15,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:15,969 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:15,970 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:15,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:15,970 INFO L85 PathProgramCache]: Analyzing trace with hash 587317892, now seen corresponding path program 1 times [2024-11-19 14:11:15,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:15,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715081657] [2024-11-19 14:11:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:15,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:16,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:16,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715081657] [2024-11-19 14:11:16,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715081657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:16,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:16,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:16,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140963701] [2024-11-19 14:11:16,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:16,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:11:16,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:16,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:11:16,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:16,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2024-11-19 14:11:16,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:16,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:16,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2024-11-19 14:11:16,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:16,982 INFO L124 PetriNetUnfolderBase]: 7826/11756 cut-off events. [2024-11-19 14:11:16,982 INFO L125 PetriNetUnfolderBase]: For 393/393 co-relation queries the response was YES. [2024-11-19 14:11:16,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23342 conditions, 11756 events. 7826/11756 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 73090 event pairs, 1040 based on Foata normal form. 737/11305 useless extension candidates. Maximal degree in co-relation 14921. Up to 4103 conditions per place. [2024-11-19 14:11:17,050 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 82 selfloop transitions, 9 changer transitions 0/110 dead transitions. [2024-11-19 14:11:17,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 110 transitions, 458 flow [2024-11-19 14:11:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:17,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2024-11-19 14:11:17,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6050228310502284 [2024-11-19 14:11:17,053 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 117 flow. Second operand 6 states and 265 transitions. [2024-11-19 14:11:17,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 110 transitions, 458 flow [2024-11-19 14:11:17,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 110 transitions, 446 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:17,056 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 179 flow [2024-11-19 14:11:17,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-11-19 14:11:17,056 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-11-19 14:11:17,056 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 179 flow [2024-11-19 14:11:17,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:17,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:17,057 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:17,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 14:11:17,057 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:17,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:17,058 INFO L85 PathProgramCache]: Analyzing trace with hash 587317247, now seen corresponding path program 1 times [2024-11-19 14:11:17,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:17,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574981424] [2024-11-19 14:11:17,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:17,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:17,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:17,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574981424] [2024-11-19 14:11:17,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574981424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:17,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:17,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:11:17,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261212616] [2024-11-19 14:11:17,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:17,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:11:17,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:11:17,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:11:17,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2024-11-19 14:11:17,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:17,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:17,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2024-11-19 14:11:17,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:17,633 INFO L124 PetriNetUnfolderBase]: 3279/6835 cut-off events. [2024-11-19 14:11:17,634 INFO L125 PetriNetUnfolderBase]: For 1337/1456 co-relation queries the response was YES. [2024-11-19 14:11:17,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13613 conditions, 6835 events. 3279/6835 cut-off events. For 1337/1456 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 61708 event pairs, 2567 based on Foata normal form. 37/5586 useless extension candidates. Maximal degree in co-relation 8339. Up to 4536 conditions per place. [2024-11-19 14:11:17,669 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 28 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-11-19 14:11:17,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 257 flow [2024-11-19 14:11:17,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:11:17,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:11:17,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-11-19 14:11:17,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6529680365296804 [2024-11-19 14:11:17,671 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 179 flow. Second operand 3 states and 143 transitions. [2024-11-19 14:11:17,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 257 flow [2024-11-19 14:11:17,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 60 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:17,676 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 199 flow [2024-11-19 14:11:17,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-11-19 14:11:17,677 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2024-11-19 14:11:17,677 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 199 flow [2024-11-19 14:11:17,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:17,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:17,678 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:17,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 14:11:17,678 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:17,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:17,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1026985866, now seen corresponding path program 1 times [2024-11-19 14:11:17,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:17,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993569413] [2024-11-19 14:11:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:17,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:17,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:17,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993569413] [2024-11-19 14:11:17,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993569413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:17,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:17,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:17,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604598128] [2024-11-19 14:11:17,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:17,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:11:17,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:17,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:11:17,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:17,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2024-11-19 14:11:17,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:17,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:17,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2024-11-19 14:11:17,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:18,664 INFO L124 PetriNetUnfolderBase]: 6351/9718 cut-off events. [2024-11-19 14:11:18,664 INFO L125 PetriNetUnfolderBase]: For 5162/5693 co-relation queries the response was YES. [2024-11-19 14:11:18,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23589 conditions, 9718 events. 6351/9718 cut-off events. For 5162/5693 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 60620 event pairs, 1364 based on Foata normal form. 495/9639 useless extension candidates. Maximal degree in co-relation 23470. Up to 4933 conditions per place. [2024-11-19 14:11:18,734 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 81 selfloop transitions, 8 changer transitions 0/108 dead transitions. [2024-11-19 14:11:18,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 108 transitions, 546 flow [2024-11-19 14:11:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 257 transitions. [2024-11-19 14:11:18,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58675799086758 [2024-11-19 14:11:18,737 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 199 flow. Second operand 6 states and 257 transitions. [2024-11-19 14:11:18,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 108 transitions, 546 flow [2024-11-19 14:11:18,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 108 transitions, 536 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:11:18,745 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 227 flow [2024-11-19 14:11:18,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-11-19 14:11:18,746 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-11-19 14:11:18,746 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 227 flow [2024-11-19 14:11:18,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:18,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:18,747 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:18,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 14:11:18,747 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:18,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1028057317, now seen corresponding path program 1 times [2024-11-19 14:11:18,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:18,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827329437] [2024-11-19 14:11:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:18,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:18,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:18,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827329437] [2024-11-19 14:11:18,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827329437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:18,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:18,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:18,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830806688] [2024-11-19 14:11:18,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:18,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:11:18,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:18,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:11:18,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:11:18,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-11-19 14:11:18,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:18,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:18,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-11-19 14:11:18,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:19,402 INFO L124 PetriNetUnfolderBase]: 3273/6750 cut-off events. [2024-11-19 14:11:19,402 INFO L125 PetriNetUnfolderBase]: For 3086/3428 co-relation queries the response was YES. [2024-11-19 14:11:19,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14303 conditions, 6750 events. 3273/6750 cut-off events. For 3086/3428 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 60287 event pairs, 2563 based on Foata normal form. 35/5622 useless extension candidates. Maximal degree in co-relation 6635. Up to 4518 conditions per place. [2024-11-19 14:11:19,436 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 27 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-11-19 14:11:19,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 60 transitions, 298 flow [2024-11-19 14:11:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:11:19,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:11:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-11-19 14:11:19,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5273972602739726 [2024-11-19 14:11:19,438 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 227 flow. Second operand 4 states and 154 transitions. [2024-11-19 14:11:19,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 60 transitions, 298 flow [2024-11-19 14:11:19,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 60 transitions, 290 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 14:11:19,446 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 222 flow [2024-11-19 14:11:19,446 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=70, PETRI_TRANSITIONS=56} [2024-11-19 14:11:19,447 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2024-11-19 14:11:19,447 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 222 flow [2024-11-19 14:11:19,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:19,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:19,448 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:19,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 14:11:19,448 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:19,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:19,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1247098881, now seen corresponding path program 1 times [2024-11-19 14:11:19,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:19,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563734770] [2024-11-19 14:11:19,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:19,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:11:19,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:19,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563734770] [2024-11-19 14:11:19,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563734770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:19,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:19,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:19,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546421335] [2024-11-19 14:11:19,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:19,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:11:19,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:19,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:11:19,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:19,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2024-11-19 14:11:19,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 56 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:19,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:19,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2024-11-19 14:11:19,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:20,761 INFO L124 PetriNetUnfolderBase]: 11103/17203 cut-off events. [2024-11-19 14:11:20,761 INFO L125 PetriNetUnfolderBase]: For 10020/10755 co-relation queries the response was YES. [2024-11-19 14:11:20,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41777 conditions, 17203 events. 11103/17203 cut-off events. For 10020/10755 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 119923 event pairs, 2114 based on Foata normal form. 510/16714 useless extension candidates. Maximal degree in co-relation 23524. Up to 6183 conditions per place. [2024-11-19 14:11:20,855 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 87 selfloop transitions, 15 changer transitions 0/121 dead transitions. [2024-11-19 14:11:20,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 121 transitions, 662 flow [2024-11-19 14:11:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:20,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:20,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 257 transitions. [2024-11-19 14:11:20,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58675799086758 [2024-11-19 14:11:20,857 INFO L175 Difference]: Start difference. First operand has 70 places, 56 transitions, 222 flow. Second operand 6 states and 257 transitions. [2024-11-19 14:11:20,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 121 transitions, 662 flow [2024-11-19 14:11:20,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 121 transitions, 654 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:11:20,886 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 349 flow [2024-11-19 14:11:20,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=349, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2024-11-19 14:11:20,887 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-11-19 14:11:20,887 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 349 flow [2024-11-19 14:11:20,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:20,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:20,888 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:20,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 14:11:20,888 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:20,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:20,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1247098684, now seen corresponding path program 1 times [2024-11-19 14:11:20,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:20,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245575410] [2024-11-19 14:11:20,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:20,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:20,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:20,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245575410] [2024-11-19 14:11:20,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245575410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:20,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184331865] [2024-11-19 14:11:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:20,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:20,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:20,924 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:11:20,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:11:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:20,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 14:11:20,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:21,012 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:11:21,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184331865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:21,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:11:21,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-19 14:11:21,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28026423] [2024-11-19 14:11:21,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:21,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:11:21,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:21,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:11:21,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:21,020 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2024-11-19 14:11:21,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:21,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:21,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2024-11-19 14:11:21,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:21,731 INFO L124 PetriNetUnfolderBase]: 5268/10004 cut-off events. [2024-11-19 14:11:21,732 INFO L125 PetriNetUnfolderBase]: For 3903/4078 co-relation queries the response was YES. [2024-11-19 14:11:21,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21355 conditions, 10004 events. 5268/10004 cut-off events. For 3903/4078 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 92754 event pairs, 1880 based on Foata normal form. 199/8450 useless extension candidates. Maximal degree in co-relation 13063. Up to 5691 conditions per place. [2024-11-19 14:11:21,779 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 35 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-11-19 14:11:21,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 465 flow [2024-11-19 14:11:21,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:11:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:11:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-19 14:11:21,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6267123287671232 [2024-11-19 14:11:21,780 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 349 flow. Second operand 4 states and 183 transitions. [2024-11-19 14:11:21,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 465 flow [2024-11-19 14:11:21,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 77 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:21,791 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 350 flow [2024-11-19 14:11:21,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=350, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2024-11-19 14:11:21,791 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2024-11-19 14:11:21,792 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 350 flow [2024-11-19 14:11:21,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:21,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:21,792 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:21,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:11:21,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:21,997 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:21,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:21,997 INFO L85 PathProgramCache]: Analyzing trace with hash 5353890, now seen corresponding path program 1 times [2024-11-19 14:11:21,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:21,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110064641] [2024-11-19 14:11:21,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:21,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:22,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:22,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110064641] [2024-11-19 14:11:22,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110064641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:22,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245641134] [2024-11-19 14:11:22,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:22,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:22,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:22,033 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:11:22,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:11:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:22,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 14:11:22,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:22,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:11:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:22,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245641134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:11:22,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:11:22,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-19 14:11:22,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825730021] [2024-11-19 14:11:22,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:11:22,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 14:11:22,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:22,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 14:11:22,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:11:22,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2024-11-19 14:11:22,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 350 flow. Second operand has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:22,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:22,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2024-11-19 14:11:22,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:22,863 INFO L124 PetriNetUnfolderBase]: 5002/9132 cut-off events. [2024-11-19 14:11:22,863 INFO L125 PetriNetUnfolderBase]: For 2579/2650 co-relation queries the response was YES. [2024-11-19 14:11:22,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18928 conditions, 9132 events. 5002/9132 cut-off events. For 2579/2650 co-relation queries the response was YES. Maximal size of possible extension queue 959. Compared 82244 event pairs, 1190 based on Foata normal form. 13/7862 useless extension candidates. Maximal degree in co-relation 11515. Up to 5763 conditions per place. [2024-11-19 14:11:22,900 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 50 selfloop transitions, 7 changer transitions 0/96 dead transitions. [2024-11-19 14:11:22,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 96 transitions, 582 flow [2024-11-19 14:11:22,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2024-11-19 14:11:22,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6232876712328768 [2024-11-19 14:11:22,902 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 350 flow. Second operand 6 states and 273 transitions. [2024-11-19 14:11:22,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 96 transitions, 582 flow [2024-11-19 14:11:22,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 96 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:11:22,908 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 370 flow [2024-11-19 14:11:22,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-11-19 14:11:22,909 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 22 predicate places. [2024-11-19 14:11:22,909 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 370 flow [2024-11-19 14:11:22,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:22,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:22,910 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:22,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:11:23,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:23,110 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:23,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:23,111 INFO L85 PathProgramCache]: Analyzing trace with hash 5360031, now seen corresponding path program 1 times [2024-11-19 14:11:23,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:23,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980733138] [2024-11-19 14:11:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:23,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:11:23,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:23,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980733138] [2024-11-19 14:11:23,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980733138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:23,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:23,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:23,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899963717] [2024-11-19 14:11:23,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:23,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:11:23,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:23,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:11:23,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:23,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2024-11-19 14:11:23,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 370 flow. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:23,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:23,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2024-11-19 14:11:23,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:24,278 INFO L124 PetriNetUnfolderBase]: 10532/16459 cut-off events. [2024-11-19 14:11:24,278 INFO L125 PetriNetUnfolderBase]: For 23275/23491 co-relation queries the response was YES. [2024-11-19 14:11:24,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45795 conditions, 16459 events. 10532/16459 cut-off events. For 23275/23491 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 116130 event pairs, 3076 based on Foata normal form. 553/16096 useless extension candidates. Maximal degree in co-relation 25630. Up to 8439 conditions per place. [2024-11-19 14:11:24,343 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 95 selfloop transitions, 11 changer transitions 0/123 dead transitions. [2024-11-19 14:11:24,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 123 transitions, 814 flow [2024-11-19 14:11:24,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 252 transitions. [2024-11-19 14:11:24,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5753424657534246 [2024-11-19 14:11:24,453 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 370 flow. Second operand 6 states and 252 transitions. [2024-11-19 14:11:24,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 123 transitions, 814 flow [2024-11-19 14:11:24,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 123 transitions, 743 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-11-19 14:11:24,512 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 360 flow [2024-11-19 14:11:24,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=360, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2024-11-19 14:11:24,512 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 22 predicate places. [2024-11-19 14:11:24,512 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 360 flow [2024-11-19 14:11:24,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:24,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:24,513 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:24,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 14:11:24,513 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:24,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:24,513 INFO L85 PathProgramCache]: Analyzing trace with hash 6415593, now seen corresponding path program 1 times [2024-11-19 14:11:24,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:24,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890524186] [2024-11-19 14:11:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:24,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:11:24,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:24,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890524186] [2024-11-19 14:11:24,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890524186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:24,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:24,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:24,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996036693] [2024-11-19 14:11:24,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:24,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:11:24,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:24,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:11:24,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:11:24,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-11-19 14:11:24,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:24,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:24,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-11-19 14:11:24,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:25,686 INFO L124 PetriNetUnfolderBase]: 9225/15381 cut-off events. [2024-11-19 14:11:25,687 INFO L125 PetriNetUnfolderBase]: For 5136/5304 co-relation queries the response was YES. [2024-11-19 14:11:25,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32836 conditions, 15381 events. 9225/15381 cut-off events. For 5136/5304 co-relation queries the response was YES. Maximal size of possible extension queue 1409. Compared 135000 event pairs, 6020 based on Foata normal form. 354/13433 useless extension candidates. Maximal degree in co-relation 15751. Up to 9274 conditions per place. [2024-11-19 14:11:25,732 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 48 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-11-19 14:11:25,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 88 transitions, 538 flow [2024-11-19 14:11:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:11:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:11:25,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-19 14:11:25,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6678082191780822 [2024-11-19 14:11:25,734 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 360 flow. Second operand 4 states and 195 transitions. [2024-11-19 14:11:25,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 88 transitions, 538 flow [2024-11-19 14:11:25,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 88 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:11:25,740 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 376 flow [2024-11-19 14:11:25,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-11-19 14:11:25,740 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-11-19 14:11:25,740 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 376 flow [2024-11-19 14:11:25,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:25,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:25,741 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:25,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 14:11:25,741 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:25,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:25,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1955289826, now seen corresponding path program 1 times [2024-11-19 14:11:25,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:25,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795121277] [2024-11-19 14:11:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:25,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:25,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:25,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795121277] [2024-11-19 14:11:25,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795121277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:25,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:25,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 14:11:25,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490050507] [2024-11-19 14:11:25,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:25,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 14:11:25,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:25,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 14:11:25,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:11:25,859 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2024-11-19 14:11:25,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 376 flow. Second operand has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 7 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:25,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:25,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2024-11-19 14:11:25,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:28,021 INFO L124 PetriNetUnfolderBase]: 20470/31008 cut-off events. [2024-11-19 14:11:28,021 INFO L125 PetriNetUnfolderBase]: For 45658/47274 co-relation queries the response was YES. [2024-11-19 14:11:28,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88432 conditions, 31008 events. 20470/31008 cut-off events. For 45658/47274 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 226376 event pairs, 3388 based on Foata normal form. 394/31228 useless extension candidates. Maximal degree in co-relation 87670. Up to 10243 conditions per place. [2024-11-19 14:11:28,177 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 179 selfloop transitions, 26 changer transitions 0/220 dead transitions. [2024-11-19 14:11:28,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 220 transitions, 1383 flow [2024-11-19 14:11:28,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:11:28,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:11:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 423 transitions. [2024-11-19 14:11:28,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5794520547945206 [2024-11-19 14:11:28,180 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 376 flow. Second operand 10 states and 423 transitions. [2024-11-19 14:11:28,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 220 transitions, 1383 flow [2024-11-19 14:11:28,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 220 transitions, 1367 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:28,745 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 534 flow [2024-11-19 14:11:28,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=534, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2024-11-19 14:11:28,746 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 36 predicate places. [2024-11-19 14:11:28,746 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 534 flow [2024-11-19 14:11:28,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 7 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:28,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:28,747 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:28,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 14:11:28,747 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:28,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:28,748 INFO L85 PathProgramCache]: Analyzing trace with hash 767276164, now seen corresponding path program 1 times [2024-11-19 14:11:28,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:28,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927659107] [2024-11-19 14:11:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:28,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:11:28,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:28,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927659107] [2024-11-19 14:11:28,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927659107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:28,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:28,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 14:11:28,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154855762] [2024-11-19 14:11:28,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:28,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 14:11:28,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:28,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 14:11:28,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:11:28,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2024-11-19 14:11:28,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 534 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:28,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:28,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2024-11-19 14:11:28,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:31,232 INFO L124 PetriNetUnfolderBase]: 21435/32668 cut-off events. [2024-11-19 14:11:31,232 INFO L125 PetriNetUnfolderBase]: For 68898/70592 co-relation queries the response was YES. [2024-11-19 14:11:31,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98398 conditions, 32668 events. 21435/32668 cut-off events. For 68898/70592 co-relation queries the response was YES. Maximal size of possible extension queue 1596. Compared 242956 event pairs, 3672 based on Foata normal form. 338/32819 useless extension candidates. Maximal degree in co-relation 74802. Up to 11550 conditions per place. [2024-11-19 14:11:31,394 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 182 selfloop transitions, 31 changer transitions 0/228 dead transitions. [2024-11-19 14:11:31,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 228 transitions, 1561 flow [2024-11-19 14:11:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:11:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:11:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 422 transitions. [2024-11-19 14:11:31,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5780821917808219 [2024-11-19 14:11:31,396 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 534 flow. Second operand 10 states and 422 transitions. [2024-11-19 14:11:31,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 228 transitions, 1561 flow [2024-11-19 14:11:32,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 228 transitions, 1496 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-11-19 14:11:32,266 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 652 flow [2024-11-19 14:11:32,266 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=652, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2024-11-19 14:11:32,267 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 43 predicate places. [2024-11-19 14:11:32,267 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 652 flow [2024-11-19 14:11:32,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:32,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:32,268 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:32,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 14:11:32,268 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:32,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:32,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2146169495, now seen corresponding path program 1 times [2024-11-19 14:11:32,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:32,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523682109] [2024-11-19 14:11:32,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:32,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:11:32,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:32,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523682109] [2024-11-19 14:11:32,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523682109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:32,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576578790] [2024-11-19 14:11:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:32,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:32,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:32,319 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:11:32,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:11:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:32,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:11:32,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:32,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:11:32,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:11:32,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:11:32,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576578790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:11:32,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:11:32,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-19 14:11:32,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140920980] [2024-11-19 14:11:32,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:11:32,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 14:11:32,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:32,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 14:11:32,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:11:32,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-11-19 14:11:32,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 652 flow. Second operand has 10 states, 10 states have (on average 33.4) internal successors, (334), 10 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:32,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:32,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-11-19 14:11:32,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:32,967 INFO L124 PetriNetUnfolderBase]: 1178/2598 cut-off events. [2024-11-19 14:11:32,967 INFO L125 PetriNetUnfolderBase]: For 4491/4682 co-relation queries the response was YES. [2024-11-19 14:11:32,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6833 conditions, 2598 events. 1178/2598 cut-off events. For 4491/4682 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 21983 event pairs, 427 based on Foata normal form. 226/2569 useless extension candidates. Maximal degree in co-relation 6812. Up to 882 conditions per place. [2024-11-19 14:11:32,976 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 38 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2024-11-19 14:11:32,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 96 transitions, 791 flow [2024-11-19 14:11:32,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 14:11:32,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 14:11:32,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 253 transitions. [2024-11-19 14:11:32,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49510763209393344 [2024-11-19 14:11:32,977 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 652 flow. Second operand 7 states and 253 transitions. [2024-11-19 14:11:32,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 96 transitions, 791 flow [2024-11-19 14:11:32,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 96 transitions, 719 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-11-19 14:11:32,996 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 545 flow [2024-11-19 14:11:32,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-11-19 14:11:32,996 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 29 predicate places. [2024-11-19 14:11:32,996 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 545 flow [2024-11-19 14:11:32,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.4) internal successors, (334), 10 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:32,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:32,997 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:33,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 14:11:33,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-19 14:11:33,197 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:33,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:33,198 INFO L85 PathProgramCache]: Analyzing trace with hash -484442078, now seen corresponding path program 1 times [2024-11-19 14:11:33,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:33,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244138798] [2024-11-19 14:11:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:33,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:33,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:33,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244138798] [2024-11-19 14:11:33,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244138798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:33,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773155135] [2024-11-19 14:11:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:33,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:33,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:33,251 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:11:33,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:11:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:33,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:11:33,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:33,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:11:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:33,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773155135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:11:33,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:11:33,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-19 14:11:33,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212536280] [2024-11-19 14:11:33,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:11:33,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:11:33,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:33,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:11:33,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:11:33,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-11-19 14:11:33,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 545 flow. Second operand has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:33,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:33,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-11-19 14:11:33,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:34,095 INFO L124 PetriNetUnfolderBase]: 3151/5247 cut-off events. [2024-11-19 14:11:34,096 INFO L125 PetriNetUnfolderBase]: For 13495/13605 co-relation queries the response was YES. [2024-11-19 14:11:34,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16645 conditions, 5247 events. 3151/5247 cut-off events. For 13495/13605 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 35187 event pairs, 211 based on Foata normal form. 184/5399 useless extension candidates. Maximal degree in co-relation 16624. Up to 716 conditions per place. [2024-11-19 14:11:34,116 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 156 selfloop transitions, 48 changer transitions 0/214 dead transitions. [2024-11-19 14:11:34,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 214 transitions, 1534 flow [2024-11-19 14:11:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 14:11:34,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 14:11:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 685 transitions. [2024-11-19 14:11:34,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4691780821917808 [2024-11-19 14:11:34,118 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 545 flow. Second operand 20 states and 685 transitions. [2024-11-19 14:11:34,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 214 transitions, 1534 flow [2024-11-19 14:11:34,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 214 transitions, 1486 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:11:34,157 INFO L231 Difference]: Finished difference. Result has 103 places, 84 transitions, 759 flow [2024-11-19 14:11:34,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=759, PETRI_PLACES=103, PETRI_TRANSITIONS=84} [2024-11-19 14:11:34,157 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2024-11-19 14:11:34,158 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 84 transitions, 759 flow [2024-11-19 14:11:34,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:34,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:34,158 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:34,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 14:11:34,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 14:11:34,362 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:34,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:34,363 INFO L85 PathProgramCache]: Analyzing trace with hash 934003589, now seen corresponding path program 1 times [2024-11-19 14:11:34,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:34,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295014512] [2024-11-19 14:11:34,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:34,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 14:11:34,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:34,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295014512] [2024-11-19 14:11:34,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295014512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:34,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:34,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:34,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321238363] [2024-11-19 14:11:34,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:34,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:11:34,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:34,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:11:34,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:34,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2024-11-19 14:11:34,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 84 transitions, 759 flow. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:34,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:34,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2024-11-19 14:11:34,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:34,938 INFO L124 PetriNetUnfolderBase]: 3473/6279 cut-off events. [2024-11-19 14:11:34,938 INFO L125 PetriNetUnfolderBase]: For 18759/18815 co-relation queries the response was YES. [2024-11-19 14:11:34,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20475 conditions, 6279 events. 3473/6279 cut-off events. For 18759/18815 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 48787 event pairs, 997 based on Foata normal form. 148/6342 useless extension candidates. Maximal degree in co-relation 20451. Up to 2293 conditions per place. [2024-11-19 14:11:34,965 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 84 selfloop transitions, 31 changer transitions 0/142 dead transitions. [2024-11-19 14:11:34,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 142 transitions, 1451 flow [2024-11-19 14:11:34,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:34,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:34,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-11-19 14:11:34,967 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5091324200913242 [2024-11-19 14:11:34,967 INFO L175 Difference]: Start difference. First operand has 103 places, 84 transitions, 759 flow. Second operand 6 states and 223 transitions. [2024-11-19 14:11:34,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 142 transitions, 1451 flow [2024-11-19 14:11:35,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 142 transitions, 1260 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-11-19 14:11:35,039 INFO L231 Difference]: Finished difference. Result has 104 places, 106 transitions, 996 flow [2024-11-19 14:11:35,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=996, PETRI_PLACES=104, PETRI_TRANSITIONS=106} [2024-11-19 14:11:35,039 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 47 predicate places. [2024-11-19 14:11:35,040 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 106 transitions, 996 flow [2024-11-19 14:11:35,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:35,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:35,040 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:35,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-19 14:11:35,040 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:35,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:35,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1110659422, now seen corresponding path program 1 times [2024-11-19 14:11:35,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:35,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078172862] [2024-11-19 14:11:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:35,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 14:11:35,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:35,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078172862] [2024-11-19 14:11:35,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078172862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:35,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:35,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:35,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418719460] [2024-11-19 14:11:35,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:35,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:11:35,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:35,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:11:35,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:35,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2024-11-19 14:11:35,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 106 transitions, 996 flow. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:35,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:35,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2024-11-19 14:11:35,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:35,454 INFO L124 PetriNetUnfolderBase]: 3311/6073 cut-off events. [2024-11-19 14:11:35,455 INFO L125 PetriNetUnfolderBase]: For 16887/16959 co-relation queries the response was YES. [2024-11-19 14:11:35,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20050 conditions, 6073 events. 3311/6073 cut-off events. For 16887/16959 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 47533 event pairs, 1453 based on Foata normal form. 152/6124 useless extension candidates. Maximal degree in co-relation 20022. Up to 2846 conditions per place. [2024-11-19 14:11:35,481 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 93 selfloop transitions, 15 changer transitions 0/135 dead transitions. [2024-11-19 14:11:35,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 135 transitions, 1389 flow [2024-11-19 14:11:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-11-19 14:11:35,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4977168949771689 [2024-11-19 14:11:35,482 INFO L175 Difference]: Start difference. First operand has 104 places, 106 transitions, 996 flow. Second operand 6 states and 218 transitions. [2024-11-19 14:11:35,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 135 transitions, 1389 flow [2024-11-19 14:11:35,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 135 transitions, 1381 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:11:35,541 INFO L231 Difference]: Finished difference. Result has 107 places, 105 transitions, 1014 flow [2024-11-19 14:11:35,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1014, PETRI_PLACES=107, PETRI_TRANSITIONS=105} [2024-11-19 14:11:35,541 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 50 predicate places. [2024-11-19 14:11:35,541 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 105 transitions, 1014 flow [2024-11-19 14:11:35,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:35,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:35,542 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:35,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-19 14:11:35,542 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2024-11-19 14:11:35,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:35,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2090582717, now seen corresponding path program 1 times [2024-11-19 14:11:35,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:35,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521094088] [2024-11-19 14:11:35,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:35,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:11:35,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:11:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:11:35,565 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:11:35,565 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 14:11:35,565 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 28 remaining) [2024-11-19 14:11:35,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2024-11-19 14:11:35,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2024-11-19 14:11:35,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 28 remaining) [2024-11-19 14:11:35,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2024-11-19 14:11:35,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2024-11-19 14:11:35,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2024-11-19 14:11:35,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2024-11-19 14:11:35,567 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2024-11-19 14:11:35,567 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2024-11-19 14:11:35,567 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2024-11-19 14:11:35,567 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2024-11-19 14:11:35,567 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2024-11-19 14:11:35,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2024-11-19 14:11:35,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 28 remaining) [2024-11-19 14:11:35,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 28 remaining) [2024-11-19 14:11:35,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2024-11-19 14:11:35,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2024-11-19 14:11:35,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2024-11-19 14:11:35,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2024-11-19 14:11:35,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2024-11-19 14:11:35,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2024-11-19 14:11:35,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2024-11-19 14:11:35,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2024-11-19 14:11:35,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2024-11-19 14:11:35,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2024-11-19 14:11:35,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2024-11-19 14:11:35,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2024-11-19 14:11:35,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-19 14:11:35,570 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:35,571 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 14:11:35,571 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-19 14:11:35,598 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 14:11:35,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 93 transitions, 242 flow [2024-11-19 14:11:35,720 INFO L124 PetriNetUnfolderBase]: 5/131 cut-off events. [2024-11-19 14:11:35,720 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 14:11:35,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 131 events. 5/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 453 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 155. Up to 10 conditions per place. [2024-11-19 14:11:35,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 93 transitions, 242 flow [2024-11-19 14:11:35,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 56 transitions, 143 flow [2024-11-19 14:11:35,729 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:11:35,729 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@180ed495, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:11:35,729 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-11-19 14:11:35,730 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:11:35,734 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-19 14:11:35,734 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:11:35,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:35,734 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:35,734 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2024-11-19 14:11:35,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:35,734 INFO L85 PathProgramCache]: Analyzing trace with hash -22907437, now seen corresponding path program 1 times [2024-11-19 14:11:35,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:35,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401691315] [2024-11-19 14:11:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:35,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:35,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:35,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401691315] [2024-11-19 14:11:35,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401691315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:35,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:35,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:35,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160789958] [2024-11-19 14:11:35,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:35,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:11:35,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:35,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:11:35,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:35,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 93 [2024-11-19 14:11:35,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:35,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:35,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 93 [2024-11-19 14:11:35,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:38,579 INFO L124 PetriNetUnfolderBase]: 45506/61722 cut-off events. [2024-11-19 14:11:38,580 INFO L125 PetriNetUnfolderBase]: For 2575/2575 co-relation queries the response was YES. [2024-11-19 14:11:38,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124213 conditions, 61722 events. 45506/61722 cut-off events. For 2575/2575 co-relation queries the response was YES. Maximal size of possible extension queue 2448. Compared 390056 event pairs, 7944 based on Foata normal form. 3137/59897 useless extension candidates. Maximal degree in co-relation 56327. Up to 24815 conditions per place. [2024-11-19 14:11:38,906 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 95 selfloop transitions, 11 changer transitions 0/129 dead transitions. [2024-11-19 14:11:38,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 129 transitions, 563 flow [2024-11-19 14:11:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 328 transitions. [2024-11-19 14:11:38,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5878136200716846 [2024-11-19 14:11:38,908 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 143 flow. Second operand 6 states and 328 transitions. [2024-11-19 14:11:38,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 129 transitions, 563 flow [2024-11-19 14:11:38,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 129 transitions, 535 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:38,914 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 217 flow [2024-11-19 14:11:38,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2024-11-19 14:11:38,916 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2024-11-19 14:11:38,916 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 217 flow [2024-11-19 14:11:38,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:38,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:38,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:38,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-19 14:11:38,917 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2024-11-19 14:11:38,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:38,917 INFO L85 PathProgramCache]: Analyzing trace with hash -22907634, now seen corresponding path program 1 times [2024-11-19 14:11:38,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:38,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951486417] [2024-11-19 14:11:38,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:38,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:38,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:38,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951486417] [2024-11-19 14:11:38,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951486417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:38,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:38,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:11:38,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80965071] [2024-11-19 14:11:38,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:38,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:11:38,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:38,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:11:38,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:11:38,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 93 [2024-11-19 14:11:38,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:38,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:38,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 93 [2024-11-19 14:11:38,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:41,012 INFO L124 PetriNetUnfolderBase]: 18334/34861 cut-off events. [2024-11-19 14:11:41,013 INFO L125 PetriNetUnfolderBase]: For 6578/7996 co-relation queries the response was YES. [2024-11-19 14:11:41,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69697 conditions, 34861 events. 18334/34861 cut-off events. For 6578/7996 co-relation queries the response was YES. Maximal size of possible extension queue 2336. Compared 361332 event pairs, 15170 based on Foata normal form. 241/28119 useless extension candidates. Maximal degree in co-relation 38533. Up to 22515 conditions per place. [2024-11-19 14:11:41,273 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 31 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2024-11-19 14:11:41,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 301 flow [2024-11-19 14:11:41,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:11:41,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:11:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2024-11-19 14:11:41,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6415770609318996 [2024-11-19 14:11:41,274 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 217 flow. Second operand 3 states and 179 transitions. [2024-11-19 14:11:41,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 70 transitions, 301 flow [2024-11-19 14:11:41,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:41,296 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 237 flow [2024-11-19 14:11:41,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2024-11-19 14:11:41,297 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2024-11-19 14:11:41,297 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 237 flow [2024-11-19 14:11:41,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:41,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:41,297 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:41,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-19 14:11:41,298 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2024-11-19 14:11:41,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:41,298 INFO L85 PathProgramCache]: Analyzing trace with hash -710130070, now seen corresponding path program 1 times [2024-11-19 14:11:41,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:41,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556123239] [2024-11-19 14:11:41,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:41,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:41,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:41,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556123239] [2024-11-19 14:11:41,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556123239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:41,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:41,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:41,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630020553] [2024-11-19 14:11:41,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:41,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:11:41,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:11:41,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:11:41,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 93 [2024-11-19 14:11:41,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:41,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:41,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 93 [2024-11-19 14:11:41,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:44,310 INFO L124 PetriNetUnfolderBase]: 38059/52420 cut-off events. [2024-11-19 14:11:44,311 INFO L125 PetriNetUnfolderBase]: For 29549/31592 co-relation queries the response was YES. [2024-11-19 14:11:44,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131164 conditions, 52420 events. 38059/52420 cut-off events. For 29549/31592 co-relation queries the response was YES. Maximal size of possible extension queue 2161. Compared 336981 event pairs, 9372 based on Foata normal form. 1667/51888 useless extension candidates. Maximal degree in co-relation 131007. Up to 27353 conditions per place. [2024-11-19 14:11:44,689 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 94 selfloop transitions, 10 changer transitions 0/127 dead transitions. [2024-11-19 14:11:44,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 127 transitions, 655 flow [2024-11-19 14:11:44,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:11:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:11:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 319 transitions. [2024-11-19 14:11:44,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5716845878136201 [2024-11-19 14:11:44,690 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 237 flow. Second operand 6 states and 319 transitions. [2024-11-19 14:11:44,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 127 transitions, 655 flow [2024-11-19 14:11:44,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 644 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:11:44,712 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 277 flow [2024-11-19 14:11:44,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2024-11-19 14:11:44,712 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2024-11-19 14:11:44,712 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 277 flow [2024-11-19 14:11:44,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:44,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:44,713 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:44,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-19 14:11:44,713 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 31 more)] === [2024-11-19 14:11:44,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:44,713 INFO L85 PathProgramCache]: Analyzing trace with hash -708997052, now seen corresponding path program 1 times [2024-11-19 14:11:44,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:44,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550913005] [2024-11-19 14:11:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:44,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:44,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:44,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:44,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550913005] [2024-11-19 14:11:44,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550913005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:44,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:44,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:44,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045353572] [2024-11-19 14:11:44,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:44,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:11:44,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:44,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:11:44,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:11:44,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2024-11-19 14:11:44,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:44,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:44,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2024-11-19 14:11:44,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand