./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/exponential-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f 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/exponential-64.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 c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:29:21,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:29:21,803 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:29:21,808 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:29:21,809 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:29:21,838 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:29:21,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:29:21,841 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:29:21,842 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:29:21,843 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:29:21,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:29:21,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:29:21,845 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:29:21,847 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:29:21,847 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:29:21,848 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:29:21,848 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:29:21,848 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:29:21,849 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:29:21,849 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:29:21,849 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:29:21,853 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:29:21,853 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:29:21,854 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:29:21,854 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:29:21,854 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:29:21,854 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:29:21,855 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:29:21,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:29:21,855 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:29:21,856 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:29:21,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:29:21,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:29:21,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:29:21,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:29:21,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:29:21,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:29:21,858 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:29:21,858 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:29:21,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:29:21,859 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:29:21,859 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:29:21,860 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:29:21,860 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:29:21,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc [2024-11-10 22:29:22,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:29:22,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:29:22,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:29:22,157 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:29:22,157 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:29:22,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-10 22:29:23,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:29:23,897 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:29:23,898 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-10 22:29:23,910 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/494344871/55e2d9a51fd24cecbe944daf26036d48/FLAGb0dbba0cf [2024-11-10 22:29:24,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/494344871/55e2d9a51fd24cecbe944daf26036d48 [2024-11-10 22:29:24,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:29:24,217 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:29:24,219 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:29:24,220 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:29:24,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:29:24,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:29:24" (1/1) ... [2024-11-10 22:29:24,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3402c03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24, skipping insertion in model container [2024-11-10 22:29:24,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:29:24" (1/1) ... [2024-11-10 22:29:24,281 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:29:24,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:29:24,636 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:29:24,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:29:24,742 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:29:24,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24 WrapperNode [2024-11-10 22:29:24,743 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:29:24,744 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:29:24,744 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:29:24,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:29:24,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24" (1/1) ... [2024-11-10 22:29:24,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24" (1/1) ... [2024-11-10 22:29:24,788 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2024-11-10 22:29:24,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:29:24,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:29:24,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:29:24,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:29:24,799 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24" (1/1) ... [2024-11-10 22:29:24,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24" (1/1) ... [2024-11-10 22:29:24,802 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24" (1/1) ... [2024-11-10 22:29:24,820 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]. [2024-11-10 22:29:24,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24" (1/1) ... [2024-11-10 22:29:24,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24" (1/1) ... [2024-11-10 22:29:24,824 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24" (1/1) ... [2024-11-10 22:29:24,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24" (1/1) ... [2024-11-10 22:29:24,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24" (1/1) ... [2024-11-10 22:29:24,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24" (1/1) ... [2024-11-10 22:29:24,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:29:24,830 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:29:24,830 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:29:24,830 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:29:24,831 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24" (1/1) ... [2024-11-10 22:29:24,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:29:24,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:24,866 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) [2024-11-10 22:29:24,869 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 [2024-11-10 22:29:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:29:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-10 22:29:24,920 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-10 22:29:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-10 22:29:24,920 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-10 22:29:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:29:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:29:24,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:29:24,922 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:29:25,125 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:29:25,127 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:29:25,323 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:29:25,324 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:29:25,437 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:29:25,437 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:29:25,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:29:25 BoogieIcfgContainer [2024-11-10 22:29:25,438 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:29:25,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:29:25,440 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:29:25,443 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:29:25,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:29:24" (1/3) ... [2024-11-10 22:29:25,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4bac13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:29:25, skipping insertion in model container [2024-11-10 22:29:25,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:29:24" (2/3) ... [2024-11-10 22:29:25,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4bac13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:29:25, skipping insertion in model container [2024-11-10 22:29:25,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:29:25" (3/3) ... [2024-11-10 22:29:25,448 INFO L112 eAbstractionObserver]: Analyzing ICFG exponential-64.i [2024-11-10 22:29:25,465 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:29:25,465 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-10 22:29:25,465 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:29:25,516 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:29:25,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 70 flow [2024-11-10 22:29:25,598 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2024-11-10 22:29:25,599 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:29:25,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 44 events. 6/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2024-11-10 22:29:25,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 31 transitions, 70 flow [2024-11-10 22:29:25,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 61 flow [2024-11-10 22:29:25,615 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:29:25,620 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;@bb7d972, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:29:25,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 22:29:25,626 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:29:25,626 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-10 22:29:25,626 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:29:25,626 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:25,627 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:29:25,627 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:25,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:25,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1674465225, now seen corresponding path program 1 times [2024-11-10 22:29:25,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:25,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138385048] [2024-11-10 22:29:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:25,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:25,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:25,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138385048] [2024-11-10 22:29:25,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138385048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:25,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:25,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:29:25,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663766349] [2024-11-10 22:29:25,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:25,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 22:29:25,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:25,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 22:29:25,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 22:29:25,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 31 [2024-11-10 22:29:25,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:25,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:25,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 31 [2024-11-10 22:29:25,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:25,941 INFO L124 PetriNetUnfolderBase]: 78/191 cut-off events. [2024-11-10 22:29:25,941 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:29:25,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 191 events. 78/191 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 810 event pairs, 68 based on Foata normal form. 10/183 useless extension candidates. Maximal degree in co-relation 317. Up to 143 conditions per place. [2024-11-10 22:29:25,947 INFO L140 encePairwiseOnDemand]: 30/31 looper letters, 14 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2024-11-10 22:29:25,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 87 flow [2024-11-10 22:29:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 22:29:25,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 22:29:25,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 43 transitions. [2024-11-10 22:29:25,959 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6935483870967742 [2024-11-10 22:29:25,961 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 61 flow. Second operand 2 states and 43 transitions. [2024-11-10 22:29:25,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 87 flow [2024-11-10 22:29:25,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:29:25,965 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2024-11-10 22:29:25,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-10 22:29:25,973 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2024-11-10 22:29:25,974 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2024-11-10 22:29:25,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:25,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:25,974 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:25,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:29:25,975 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:25,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:25,975 INFO L85 PathProgramCache]: Analyzing trace with hash 341784357, now seen corresponding path program 1 times [2024-11-10 22:29:25,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:25,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140209225] [2024-11-10 22:29:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:25,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:26,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:26,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140209225] [2024-11-10 22:29:26,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140209225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:26,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:26,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:29:26,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823476754] [2024-11-10 22:29:26,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:26,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:29:26,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:26,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:29:26,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:29:26,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 31 [2024-11-10 22:29:26,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:26,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:26,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 31 [2024-11-10 22:29:26,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:26,232 INFO L124 PetriNetUnfolderBase]: 89/230 cut-off events. [2024-11-10 22:29:26,235 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:29:26,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 230 events. 89/230 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1008 event pairs, 20 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 398. Up to 115 conditions per place. [2024-11-10 22:29:26,239 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 18 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2024-11-10 22:29:26,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 108 flow [2024-11-10 22:29:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:29:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:29:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-10 22:29:26,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2024-11-10 22:29:26,243 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 60 transitions. [2024-11-10 22:29:26,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 108 flow [2024-11-10 22:29:26,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:29:26,246 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 66 flow [2024-11-10 22:29:26,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2024-11-10 22:29:26,248 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-11-10 22:29:26,249 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 66 flow [2024-11-10 22:29:26,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:26,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:26,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:26,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:29:26,252 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:26,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:26,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2053971092, now seen corresponding path program 1 times [2024-11-10 22:29:26,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:26,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656488293] [2024-11-10 22:29:26,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:26,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:26,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:26,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656488293] [2024-11-10 22:29:26,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656488293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:26,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:26,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:29:26,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626402220] [2024-11-10 22:29:26,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:26,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:29:26,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:26,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:29:26,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:29:26,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 31 [2024-11-10 22:29:26,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:26,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:26,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 31 [2024-11-10 22:29:26,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:26,497 INFO L124 PetriNetUnfolderBase]: 77/215 cut-off events. [2024-11-10 22:29:26,497 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-10 22:29:26,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 215 events. 77/215 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 965 event pairs, 8 based on Foata normal form. 18/223 useless extension candidates. Maximal degree in co-relation 390. Up to 94 conditions per place. [2024-11-10 22:29:26,502 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 20 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2024-11-10 22:29:26,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 126 flow [2024-11-10 22:29:26,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:29:26,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:29:26,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-11-10 22:29:26,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5887096774193549 [2024-11-10 22:29:26,504 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 66 flow. Second operand 4 states and 73 transitions. [2024-11-10 22:29:26,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 126 flow [2024-11-10 22:29:26,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:29:26,508 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 64 flow [2024-11-10 22:29:26,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2024-11-10 22:29:26,510 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2024-11-10 22:29:26,510 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 64 flow [2024-11-10 22:29:26,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:26,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:26,510 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:26,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:29:26,511 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:26,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:26,511 INFO L85 PathProgramCache]: Analyzing trace with hash 250008638, now seen corresponding path program 1 times [2024-11-10 22:29:26,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:26,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818740010] [2024-11-10 22:29:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:29:26,537 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:29:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:29:26,579 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:29:26,579 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:29:26,581 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-10 22:29:26,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-10 22:29:26,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-10 22:29:26,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-10 22:29:26,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-10 22:29:26,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-10 22:29:26,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:29:26,587 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-10 22:29:26,591 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:29:26,591 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 22:29:26,623 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:29:26,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 39 transitions, 98 flow [2024-11-10 22:29:26,637 INFO L124 PetriNetUnfolderBase]: 9/72 cut-off events. [2024-11-10 22:29:26,638 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:29:26,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 72 events. 9/72 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 61. Up to 6 conditions per place. [2024-11-10 22:29:26,639 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 39 transitions, 98 flow [2024-11-10 22:29:26,639 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 35 transitions, 88 flow [2024-11-10 22:29:26,641 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:29:26,641 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;@bb7d972, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:29:26,641 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 22:29:26,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:29:26,645 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-10 22:29:26,645 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:29:26,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:26,646 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:29:26,646 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:26,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:26,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1466747287, now seen corresponding path program 1 times [2024-11-10 22:29:26,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:26,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554320622] [2024-11-10 22:29:26,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:26,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:26,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:26,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554320622] [2024-11-10 22:29:26,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554320622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:26,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:26,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:29:26,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674318125] [2024-11-10 22:29:26,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:26,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 22:29:26,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:26,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 22:29:26,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 22:29:26,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-10 22:29:26,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:26,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:26,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-10 22:29:26,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:27,044 INFO L124 PetriNetUnfolderBase]: 1491/2545 cut-off events. [2024-11-10 22:29:27,044 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-10 22:29:27,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4762 conditions, 2545 events. 1491/2545 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15276 event pairs, 1400 based on Foata normal form. 91/2482 useless extension candidates. Maximal degree in co-relation 1312. Up to 2096 conditions per place. [2024-11-10 22:29:27,068 INFO L140 encePairwiseOnDemand]: 38/39 looper letters, 20 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-10 22:29:27,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 126 flow [2024-11-10 22:29:27,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 22:29:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 22:29:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 53 transitions. [2024-11-10 22:29:27,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6794871794871795 [2024-11-10 22:29:27,071 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 88 flow. Second operand 2 states and 53 transitions. [2024-11-10 22:29:27,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 126 flow [2024-11-10 22:29:27,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 125 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:29:27,076 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 85 flow [2024-11-10 22:29:27,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=85, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2024-11-10 22:29:27,078 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-11-10 22:29:27,078 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 85 flow [2024-11-10 22:29:27,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:27,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:27,079 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:27,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:29:27,079 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:27,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:27,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1748444332, now seen corresponding path program 1 times [2024-11-10 22:29:27,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:27,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201742642] [2024-11-10 22:29:27,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:27,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:27,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:27,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201742642] [2024-11-10 22:29:27,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201742642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:27,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:27,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:29:27,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558835162] [2024-11-10 22:29:27,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:27,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:29:27,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:27,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:29:27,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:29:27,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 39 [2024-11-10 22:29:27,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:27,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:27,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 39 [2024-11-10 22:29:27,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:27,399 INFO L124 PetriNetUnfolderBase]: 1718/2990 cut-off events. [2024-11-10 22:29:27,400 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-10 22:29:27,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5522 conditions, 2990 events. 1718/2990 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 18645 event pairs, 740 based on Foata normal form. 0/2765 useless extension candidates. Maximal degree in co-relation 5516. Up to 2365 conditions per place. [2024-11-10 22:29:27,418 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 27 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-11-10 22:29:27,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 159 flow [2024-11-10 22:29:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:29:27,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:29:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-10 22:29:27,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2024-11-10 22:29:27,420 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 85 flow. Second operand 3 states and 75 transitions. [2024-11-10 22:29:27,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 159 flow [2024-11-10 22:29:27,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 159 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:29:27,422 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 97 flow [2024-11-10 22:29:27,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-11-10 22:29:27,423 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-11-10 22:29:27,425 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 97 flow [2024-11-10 22:29:27,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:27,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:27,426 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:27,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:29:27,426 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:27,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:27,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1577739487, now seen corresponding path program 1 times [2024-11-10 22:29:27,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:27,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944347505] [2024-11-10 22:29:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:27,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:27,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:27,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944347505] [2024-11-10 22:29:27,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944347505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:27,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:27,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:29:27,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316689058] [2024-11-10 22:29:27,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:27,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:29:27,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:27,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:29:27,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:29:27,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-10 22:29:27,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:27,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:27,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-10 22:29:27,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:27,807 INFO L124 PetriNetUnfolderBase]: 1922/3206 cut-off events. [2024-11-10 22:29:27,807 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-10 22:29:27,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6179 conditions, 3206 events. 1922/3206 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 19464 event pairs, 836 based on Foata normal form. 18/3124 useless extension candidates. Maximal degree in co-relation 6171. Up to 2641 conditions per place. [2024-11-10 22:29:27,827 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 31 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-10 22:29:27,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 187 flow [2024-11-10 22:29:27,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:29:27,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:29:27,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-10 22:29:27,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2024-11-10 22:29:27,829 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 97 flow. Second operand 4 states and 92 transitions. [2024-11-10 22:29:27,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 187 flow [2024-11-10 22:29:27,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:29:27,833 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 113 flow [2024-11-10 22:29:27,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2024-11-10 22:29:27,834 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-11-10 22:29:27,835 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 113 flow [2024-11-10 22:29:27,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:27,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:27,836 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:27,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:29:27,836 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:27,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:27,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1311464812, now seen corresponding path program 1 times [2024-11-10 22:29:27,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:27,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316006100] [2024-11-10 22:29:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:27,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:27,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:29:27,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:27,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316006100] [2024-11-10 22:29:27,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316006100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:27,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:27,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:29:27,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020781144] [2024-11-10 22:29:27,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:27,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:29:27,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:27,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:29:27,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:29:27,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-10 22:29:27,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2024-11-10 22:29:27,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:27,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-10 22:29:27,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:28,337 INFO L124 PetriNetUnfolderBase]: 2402/3893 cut-off events. [2024-11-10 22:29:28,338 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-11-10 22:29:28,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7706 conditions, 3893 events. 2402/3893 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 22671 event pairs, 1856 based on Foata normal form. 90/3818 useless extension candidates. Maximal degree in co-relation 7696. Up to 2729 conditions per place. [2024-11-10 22:29:28,365 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 39 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-11-10 22:29:28,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 233 flow [2024-11-10 22:29:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:29:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:29:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-10 22:29:28,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2024-11-10 22:29:28,368 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 113 flow. Second operand 4 states and 98 transitions. [2024-11-10 22:29:28,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 54 transitions, 233 flow [2024-11-10 22:29:28,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 229 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:29:28,373 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 131 flow [2024-11-10 22:29:28,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2024-11-10 22:29:28,373 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-11-10 22:29:28,374 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 131 flow [2024-11-10 22:29:28,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2024-11-10 22:29:28,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:28,374 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:28,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:29:28,374 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:28,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:28,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2056689059, now seen corresponding path program 1 times [2024-11-10 22:29:28,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:28,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129739237] [2024-11-10 22:29:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:28,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:28,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:28,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129739237] [2024-11-10 22:29:28,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129739237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:28,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849761631] [2024-11-10 22:29:28,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:28,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:28,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:28,499 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) [2024-11-10 22:29:28,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:29:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:28,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:29:28,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:28,652 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:29:28,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849761631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:28,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:29:28,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:29:28,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482766516] [2024-11-10 22:29:28,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:28,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:29:28,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:28,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:29:28,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:29:28,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-10 22:29:28,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:28,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:28,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-10 22:29:28,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:29,049 INFO L124 PetriNetUnfolderBase]: 2162/3704 cut-off events. [2024-11-10 22:29:29,049 INFO L125 PetriNetUnfolderBase]: For 1140/1140 co-relation queries the response was YES. [2024-11-10 22:29:29,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7956 conditions, 3704 events. 2162/3704 cut-off events. For 1140/1140 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 22952 event pairs, 728 based on Foata normal form. 81/3748 useless extension candidates. Maximal degree in co-relation 7944. Up to 2385 conditions per place. [2024-11-10 22:29:29,078 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 38 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-11-10 22:29:29,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 249 flow [2024-11-10 22:29:29,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:29:29,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:29:29,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-11-10 22:29:29,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-11-10 22:29:29,080 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 131 flow. Second operand 6 states and 126 transitions. [2024-11-10 22:29:29,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 249 flow [2024-11-10 22:29:29,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:29:29,090 INFO L231 Difference]: Finished difference. Result has 56 places, 37 transitions, 135 flow [2024-11-10 22:29:29,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=37} [2024-11-10 22:29:29,091 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-11-10 22:29:29,091 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 37 transitions, 135 flow [2024-11-10 22:29:29,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:29,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:29,091 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:29,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:29:29,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:29,293 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:29,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:29,293 INFO L85 PathProgramCache]: Analyzing trace with hash -667148433, now seen corresponding path program 1 times [2024-11-10 22:29:29,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:29,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562389172] [2024-11-10 22:29:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:29,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:29,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:29,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562389172] [2024-11-10 22:29:29,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562389172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:29,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391886839] [2024-11-10 22:29:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:29,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:29,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:29,370 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) [2024-11-10 22:29:29,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:29:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:29,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:29:29,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:29,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:29,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391886839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:29,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:29,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:29:29,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723512073] [2024-11-10 22:29:29,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:29,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:29:29,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:29,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:29:29,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:29:29,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-10 22:29:29,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 37 transitions, 135 flow. Second operand has 12 states, 12 states have (on average 16.75) internal successors, (201), 12 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:29,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:29,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-10 22:29:29,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:30,029 INFO L124 PetriNetUnfolderBase]: 1946/3650 cut-off events. [2024-11-10 22:29:30,029 INFO L125 PetriNetUnfolderBase]: For 1336/1336 co-relation queries the response was YES. [2024-11-10 22:29:30,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7696 conditions, 3650 events. 1946/3650 cut-off events. For 1336/1336 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 24074 event pairs, 80 based on Foata normal form. 81/3721 useless extension candidates. Maximal degree in co-relation 7684. Up to 1863 conditions per place. [2024-11-10 22:29:30,050 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 51 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2024-11-10 22:29:30,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 319 flow [2024-11-10 22:29:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:29:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:29:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-11-10 22:29:30,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531135531135531 [2024-11-10 22:29:30,054 INFO L175 Difference]: Start difference. First operand has 56 places, 37 transitions, 135 flow. Second operand 7 states and 151 transitions. [2024-11-10 22:29:30,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 319 flow [2024-11-10 22:29:30,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 68 transitions, 306 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-10 22:29:30,064 INFO L231 Difference]: Finished difference. Result has 56 places, 36 transitions, 128 flow [2024-11-10 22:29:30,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2024-11-10 22:29:30,066 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-11-10 22:29:30,067 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 36 transitions, 128 flow [2024-11-10 22:29:30,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.75) internal successors, (201), 12 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:30,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:30,068 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:30,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 22:29:30,270 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,SelfDestructingSolverStorable9 [2024-11-10 22:29:30,271 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:30,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:30,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1702234120, now seen corresponding path program 1 times [2024-11-10 22:29:30,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:30,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105662317] [2024-11-10 22:29:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:30,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:29:30,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:30,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105662317] [2024-11-10 22:29:30,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105662317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:30,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247899353] [2024-11-10 22:29:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:30,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:30,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:30,365 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) [2024-11-10 22:29:30,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:29:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:30,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:29:30,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:29:30,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:29:30,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247899353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:30,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:30,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:29:30,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858707725] [2024-11-10 22:29:30,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:30,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 22:29:30,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:30,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 22:29:30,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-10 22:29:30,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-11-10 22:29:30,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 36 transitions, 128 flow. Second operand has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:30,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:30,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-11-10 22:29:30,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:30,794 INFO L124 PetriNetUnfolderBase]: 944/1658 cut-off events. [2024-11-10 22:29:30,794 INFO L125 PetriNetUnfolderBase]: For 690/690 co-relation queries the response was YES. [2024-11-10 22:29:30,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 1658 events. 944/1658 cut-off events. For 690/690 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9338 event pairs, 80 based on Foata normal form. 90/1738 useless extension candidates. Maximal degree in co-relation 3511. Up to 594 conditions per place. [2024-11-10 22:29:30,805 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 41 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-11-10 22:29:30,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 236 flow [2024-11-10 22:29:30,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:29:30,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:29:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-11-10 22:29:30,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5091575091575091 [2024-11-10 22:29:30,807 INFO L175 Difference]: Start difference. First operand has 56 places, 36 transitions, 128 flow. Second operand 7 states and 139 transitions. [2024-11-10 22:29:30,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 236 flow [2024-11-10 22:29:30,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 224 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 22:29:30,810 INFO L231 Difference]: Finished difference. Result has 47 places, 26 transitions, 88 flow [2024-11-10 22:29:30,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=88, PETRI_PLACES=47, PETRI_TRANSITIONS=26} [2024-11-10 22:29:30,812 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-11-10 22:29:30,812 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 88 flow [2024-11-10 22:29:30,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:30,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:30,813 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:30,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 22:29:31,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:31,014 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:31,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:31,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2089910164, now seen corresponding path program 1 times [2024-11-10 22:29:31,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:31,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209206549] [2024-11-10 22:29:31,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:31,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:29:31,027 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:29:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:29:31,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:29:31,042 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:29:31,042 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-10 22:29:31,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-10 22:29:31,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-10 22:29:31,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-10 22:29:31,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-10 22:29:31,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-10 22:29:31,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 22:29:31,043 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:31,044 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:29:31,044 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 22:29:31,067 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:29:31,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 47 transitions, 130 flow [2024-11-10 22:29:31,076 INFO L124 PetriNetUnfolderBase]: 12/100 cut-off events. [2024-11-10 22:29:31,076 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-10 22:29:31,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 100 events. 12/100 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 97. Up to 8 conditions per place. [2024-11-10 22:29:31,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 47 transitions, 130 flow [2024-11-10 22:29:31,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 43 transitions, 119 flow [2024-11-10 22:29:31,078 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:29:31,078 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;@bb7d972, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:29:31,078 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 22:29:31,080 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:29:31,080 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-10 22:29:31,080 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:29:31,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:31,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:29:31,080 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:31,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:31,081 INFO L85 PathProgramCache]: Analyzing trace with hash -76324855, now seen corresponding path program 1 times [2024-11-10 22:29:31,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:31,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858071389] [2024-11-10 22:29:31,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:31,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:31,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:31,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858071389] [2024-11-10 22:29:31,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858071389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:31,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:31,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:29:31,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14923877] [2024-11-10 22:29:31,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:31,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 22:29:31,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:31,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 22:29:31,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 22:29:31,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-10 22:29:31,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 119 flow. Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:31,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:31,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-10 22:29:31,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:33,750 INFO L124 PetriNetUnfolderBase]: 20688/30049 cut-off events. [2024-11-10 22:29:33,751 INFO L125 PetriNetUnfolderBase]: For 2383/2383 co-relation queries the response was YES. [2024-11-10 22:29:33,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57621 conditions, 30049 events. 20688/30049 cut-off events. For 2383/2383 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 204050 event pairs, 19868 based on Foata normal form. 820/29500 useless extension candidates. Maximal degree in co-relation 16771. Up to 26153 conditions per place. [2024-11-10 22:29:33,990 INFO L140 encePairwiseOnDemand]: 46/47 looper letters, 26 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2024-11-10 22:29:33,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 169 flow [2024-11-10 22:29:33,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 22:29:33,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 22:29:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 63 transitions. [2024-11-10 22:29:33,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2024-11-10 22:29:33,991 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 119 flow. Second operand 2 states and 63 transitions. [2024-11-10 22:29:33,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 169 flow [2024-11-10 22:29:34,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 42 transitions, 164 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 22:29:34,005 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 112 flow [2024-11-10 22:29:34,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-11-10 22:29:34,006 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-11-10 22:29:34,006 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 112 flow [2024-11-10 22:29:34,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:34,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:34,006 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:34,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 22:29:34,007 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:34,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:34,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1901866811, now seen corresponding path program 1 times [2024-11-10 22:29:34,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:34,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857132056] [2024-11-10 22:29:34,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:34,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:34,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:34,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857132056] [2024-11-10 22:29:34,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857132056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:34,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:34,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:29:34,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364430995] [2024-11-10 22:29:34,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:34,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:29:34,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:34,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:29:34,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:29:34,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-10 22:29:34,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:34,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:34,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-10 22:29:34,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:36,229 INFO L124 PetriNetUnfolderBase]: 23831/33797 cut-off events. [2024-11-10 22:29:36,230 INFO L125 PetriNetUnfolderBase]: For 1243/1243 co-relation queries the response was YES. [2024-11-10 22:29:36,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65005 conditions, 33797 events. 23831/33797 cut-off events. For 1243/1243 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 221592 event pairs, 14672 based on Foata normal form. 0/31952 useless extension candidates. Maximal degree in co-relation 64997. Up to 30067 conditions per place. [2024-11-10 22:29:36,498 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-11-10 22:29:36,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 198 flow [2024-11-10 22:29:36,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:29:36,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:29:36,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-10 22:29:36,500 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-11-10 22:29:36,500 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 112 flow. Second operand 3 states and 87 transitions. [2024-11-10 22:29:36,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 198 flow [2024-11-10 22:29:36,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 50 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:29:36,505 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 124 flow [2024-11-10 22:29:36,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-11-10 22:29:36,506 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-11-10 22:29:36,507 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 124 flow [2024-11-10 22:29:36,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:36,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:36,507 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:36,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 22:29:36,508 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:36,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:36,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1110139474, now seen corresponding path program 1 times [2024-11-10 22:29:36,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:36,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070505658] [2024-11-10 22:29:36,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:36,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:36,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:36,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070505658] [2024-11-10 22:29:36,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070505658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:36,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:36,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:29:36,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455085042] [2024-11-10 22:29:36,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:36,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:29:36,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:36,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:29:36,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:29:36,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-10 22:29:36,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:36,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:36,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-10 22:29:36,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:38,896 INFO L124 PetriNetUnfolderBase]: 26951/37340 cut-off events. [2024-11-10 22:29:38,896 INFO L125 PetriNetUnfolderBase]: For 2062/2062 co-relation queries the response was YES. [2024-11-10 22:29:38,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73687 conditions, 37340 events. 26951/37340 cut-off events. For 2062/2062 co-relation queries the response was YES. Maximal size of possible extension queue 1442. Compared 238153 event pairs, 16712 based on Foata normal form. 18/36367 useless extension candidates. Maximal degree in co-relation 73677. Up to 33988 conditions per place. [2024-11-10 22:29:39,395 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 37 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-11-10 22:29:39,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 226 flow [2024-11-10 22:29:39,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:29:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:29:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-11-10 22:29:39,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-11-10 22:29:39,396 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 124 flow. Second operand 4 states and 106 transitions. [2024-11-10 22:29:39,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 226 flow [2024-11-10 22:29:39,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:29:39,400 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 140 flow [2024-11-10 22:29:39,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2024-11-10 22:29:39,401 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-11-10 22:29:39,401 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 140 flow [2024-11-10 22:29:39,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:39,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:39,402 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:39,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 22:29:39,402 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:39,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:39,403 INFO L85 PathProgramCache]: Analyzing trace with hash -336536370, now seen corresponding path program 1 times [2024-11-10 22:29:39,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:39,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614384538] [2024-11-10 22:29:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:39,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:29:39,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:39,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614384538] [2024-11-10 22:29:39,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614384538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:39,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:39,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:29:39,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180595486] [2024-11-10 22:29:39,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:39,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:29:39,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:39,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:29:39,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:29:39,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-10 22:29:39,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:39,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:39,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-10 22:29:39,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:42,507 INFO L124 PetriNetUnfolderBase]: 33263/46787 cut-off events. [2024-11-10 22:29:42,507 INFO L125 PetriNetUnfolderBase]: For 2775/2775 co-relation queries the response was YES. [2024-11-10 22:29:42,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92641 conditions, 46787 events. 33263/46787 cut-off events. For 2775/2775 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 306456 event pairs, 26156 based on Foata normal form. 819/46147 useless extension candidates. Maximal degree in co-relation 92629. Up to 34076 conditions per place. [2024-11-10 22:29:42,860 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 53 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2024-11-10 22:29:42,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 304 flow [2024-11-10 22:29:42,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:29:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:29:42,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-10 22:29:42,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-11-10 22:29:42,862 INFO L175 Difference]: Start difference. First operand has 62 places, 44 transitions, 140 flow. Second operand 4 states and 120 transitions. [2024-11-10 22:29:42,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 304 flow [2024-11-10 22:29:42,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 300 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:29:42,870 INFO L231 Difference]: Finished difference. Result has 65 places, 46 transitions, 158 flow [2024-11-10 22:29:42,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=65, PETRI_TRANSITIONS=46} [2024-11-10 22:29:42,870 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-11-10 22:29:42,871 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 46 transitions, 158 flow [2024-11-10 22:29:42,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:42,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:42,871 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:42,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 22:29:42,872 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:42,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:42,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1780236867, now seen corresponding path program 1 times [2024-11-10 22:29:42,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:42,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948717830] [2024-11-10 22:29:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:42,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:42,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:42,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948717830] [2024-11-10 22:29:42,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948717830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:42,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718549607] [2024-11-10 22:29:42,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:42,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:42,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:42,944 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) [2024-11-10 22:29:42,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:29:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:43,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:29:43,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:43,054 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:29:43,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718549607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:43,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:29:43,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:29:43,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660895731] [2024-11-10 22:29:43,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:43,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:29:43,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:43,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:29:43,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:29:43,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-10 22:29:43,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 46 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) [2024-11-10 22:29:43,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:43,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-10 22:29:43,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:45,926 INFO L124 PetriNetUnfolderBase]: 30107/42044 cut-off events. [2024-11-10 22:29:45,926 INFO L125 PetriNetUnfolderBase]: For 11382/11868 co-relation queries the response was YES. [2024-11-10 22:29:46,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90524 conditions, 42044 events. 30107/42044 cut-off events. For 11382/11868 co-relation queries the response was YES. Maximal size of possible extension queue 1346. Compared 271975 event pairs, 13445 based on Foata normal form. 810/42412 useless extension candidates. Maximal degree in co-relation 90510. Up to 30087 conditions per place. [2024-11-10 22:29:46,209 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 48 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2024-11-10 22:29:46,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 304 flow [2024-11-10 22:29:46,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:29:46,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:29:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-11-10 22:29:46,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-11-10 22:29:46,211 INFO L175 Difference]: Start difference. First operand has 65 places, 46 transitions, 158 flow. Second operand 6 states and 148 transitions. [2024-11-10 22:29:46,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 304 flow [2024-11-10 22:29:46,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:29:46,352 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 162 flow [2024-11-10 22:29:46,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2024-11-10 22:29:46,353 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2024-11-10 22:29:46,353 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 162 flow [2024-11-10 22:29:46,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) [2024-11-10 22:29:46,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:46,353 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:46,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:29:46,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 22:29:46,554 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:46,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash 647232196, now seen corresponding path program 1 times [2024-11-10 22:29:46,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:46,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880622576] [2024-11-10 22:29:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:46,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:46,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880622576] [2024-11-10 22:29:46,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880622576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:46,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511232094] [2024-11-10 22:29:46,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:46,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:46,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:46,627 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) [2024-11-10 22:29:46,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:29:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:46,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:29:46,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:46,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:46,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511232094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:46,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:46,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:29:46,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024538960] [2024-11-10 22:29:46,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:46,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:29:46,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:46,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:29:46,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:29:46,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-10 22:29:46,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 162 flow. Second operand has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:46,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:46,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-10 22:29:46,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:50,245 INFO L124 PetriNetUnfolderBase]: 26975/42449 cut-off events. [2024-11-10 22:29:50,245 INFO L125 PetriNetUnfolderBase]: For 13522/13522 co-relation queries the response was YES. [2024-11-10 22:29:50,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88293 conditions, 42449 events. 26975/42449 cut-off events. For 13522/13522 co-relation queries the response was YES. Maximal size of possible extension queue 1344. Compared 327020 event pairs, 728 based on Foata normal form. 810/43168 useless extension candidates. Maximal degree in co-relation 88279. Up to 22599 conditions per place. [2024-11-10 22:29:50,500 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 88 selfloop transitions, 7 changer transitions 0/109 dead transitions. [2024-11-10 22:29:50,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 109 transitions, 510 flow [2024-11-10 22:29:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 22:29:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 22:29:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-11-10 22:29:50,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-10 22:29:50,502 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 162 flow. Second operand 9 states and 235 transitions. [2024-11-10 22:29:50,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 109 transitions, 510 flow [2024-11-10 22:29:50,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 109 transitions, 493 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-10 22:29:50,680 INFO L231 Difference]: Finished difference. Result has 70 places, 46 transitions, 167 flow [2024-11-10 22:29:50,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=167, PETRI_PLACES=70, PETRI_TRANSITIONS=46} [2024-11-10 22:29:50,681 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-11-10 22:29:50,681 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 46 transitions, 167 flow [2024-11-10 22:29:50,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:50,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:50,682 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:50,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 22:29:50,882 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,SelfDestructingSolverStorable17 [2024-11-10 22:29:50,882 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:50,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:50,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1679877590, now seen corresponding path program 1 times [2024-11-10 22:29:50,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:50,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582453617] [2024-11-10 22:29:50,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:50,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:50,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:29:50,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:50,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582453617] [2024-11-10 22:29:50,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582453617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:50,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510438349] [2024-11-10 22:29:50,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:50,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:50,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:50,948 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) [2024-11-10 22:29:50,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:29:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:51,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:29:51,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:29:51,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:29:51,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510438349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:51,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:51,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:29:51,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59466467] [2024-11-10 22:29:51,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:51,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 22:29:51,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:51,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 22:29:51,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-10 22:29:51,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-10 22:29:51,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 46 transitions, 167 flow. Second operand has 11 states, 11 states have (on average 17.454545454545453) internal successors, (192), 11 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:51,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:51,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-10 22:29:51,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:53,877 INFO L124 PetriNetUnfolderBase]: 28889/42881 cut-off events. [2024-11-10 22:29:53,877 INFO L125 PetriNetUnfolderBase]: For 11418/11418 co-relation queries the response was YES. [2024-11-10 22:29:53,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90187 conditions, 42881 events. 28889/42881 cut-off events. For 11418/11418 co-relation queries the response was YES. Maximal size of possible extension queue 1352. Compared 301645 event pairs, 2672 based on Foata normal form. 90/42718 useless extension candidates. Maximal degree in co-relation 90175. Up to 22600 conditions per place. [2024-11-10 22:29:54,161 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 67 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2024-11-10 22:29:54,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 87 transitions, 397 flow [2024-11-10 22:29:54,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:29:54,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:29:54,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-11-10 22:29:54,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5440729483282675 [2024-11-10 22:29:54,163 INFO L175 Difference]: Start difference. First operand has 70 places, 46 transitions, 167 flow. Second operand 7 states and 179 transitions. [2024-11-10 22:29:54,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 87 transitions, 397 flow [2024-11-10 22:29:54,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 87 transitions, 383 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:29:54,661 INFO L231 Difference]: Finished difference. Result has 74 places, 47 transitions, 183 flow [2024-11-10 22:29:54,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=74, PETRI_TRANSITIONS=47} [2024-11-10 22:29:54,662 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-11-10 22:29:54,662 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 47 transitions, 183 flow [2024-11-10 22:29:54,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.454545454545453) internal successors, (192), 11 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:54,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:54,662 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:54,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 22:29:54,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:54,863 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:54,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:54,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1144632762, now seen corresponding path program 1 times [2024-11-10 22:29:54,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:54,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402710057] [2024-11-10 22:29:54,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:54,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:29:54,876 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:29:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:29:54,896 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:29:54,896 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:29:54,896 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-10 22:29:54,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-10 22:29:54,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-10 22:29:54,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-10 22:29:54,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-10 22:29:54,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-10 22:29:54,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-10 22:29:54,897 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:54,897 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:29:54,897 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 22:29:54,927 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:29:54,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 55 transitions, 166 flow [2024-11-10 22:29:54,937 INFO L124 PetriNetUnfolderBase]: 15/128 cut-off events. [2024-11-10 22:29:54,938 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-10 22:29:54,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 128 events. 15/128 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 240 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 135. Up to 10 conditions per place. [2024-11-10 22:29:54,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 55 transitions, 166 flow [2024-11-10 22:29:54,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 51 transitions, 154 flow [2024-11-10 22:29:54,940 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:29:54,940 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;@bb7d972, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:29:54,940 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 22:29:54,942 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:29:54,942 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-10 22:29:54,942 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:29:54,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:54,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:29:54,942 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-10 22:29:54,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1550765225, now seen corresponding path program 1 times [2024-11-10 22:29:54,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:54,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143808522] [2024-11-10 22:29:54,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:54,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:54,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:54,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143808522] [2024-11-10 22:29:54,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143808522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:54,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:54,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:29:54,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527169035] [2024-11-10 22:29:54,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:54,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 22:29:54,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 22:29:54,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 22:29:54,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-10 22:29:54,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 154 flow. Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:54,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:54,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-10 22:29:54,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand