./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f 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/goblint-regression/06-symbeq_06-tricky_address1.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 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:36:52,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:36:52,967 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:36:52,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:36:52,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:36:53,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:36:53,002 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:36:53,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:36:53,003 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:36:53,005 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:36:53,005 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:36:53,006 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:36:53,006 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:36:53,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:36:53,010 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:36:53,010 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:36:53,010 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:36:53,010 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:36:53,011 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:36:53,011 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:36:53,011 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:36:53,012 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:36:53,012 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:36:53,013 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:36:53,013 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:36:53,013 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:36:53,014 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:36:53,014 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:36:53,014 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:36:53,014 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:36:53,015 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:36:53,015 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:36:53,016 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:36:53,016 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:36:53,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:36:53,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:36:53,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:36:53,018 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:36:53,018 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:36:53,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:36:53,018 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:36:53,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:36:53,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:36:53,019 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:36:53,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e [2024-11-12 20:36:53,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:36:53,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:36:53,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:36:53,291 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:36:53,291 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:36:53,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2024-11-12 20:36:54,769 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:36:55,031 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:36:55,033 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2024-11-12 20:36:55,055 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8a3e71dc/e765181c96444279994de736afff746f/FLAGd5f1a313a [2024-11-12 20:36:55,071 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8a3e71dc/e765181c96444279994de736afff746f [2024-11-12 20:36:55,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:36:55,075 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:36:55,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:36:55,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:36:55,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:36:55,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:36:55" (1/1) ... [2024-11-12 20:36:55,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d07726a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55, skipping insertion in model container [2024-11-12 20:36:55,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:36:55" (1/1) ... [2024-11-12 20:36:55,137 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:36:55,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:36:55,637 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:36:55,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:36:55,766 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:36:55,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55 WrapperNode [2024-11-12 20:36:55,767 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:36:55,768 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:36:55,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:36:55,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:36:55,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55" (1/1) ... [2024-11-12 20:36:55,796 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55" (1/1) ... [2024-11-12 20:36:55,833 INFO L138 Inliner]: procedures = 265, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 133 [2024-11-12 20:36:55,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:36:55,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:36:55,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:36:55,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:36:55,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55" (1/1) ... [2024-11-12 20:36:55,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55" (1/1) ... [2024-11-12 20:36:55,853 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55" (1/1) ... [2024-11-12 20:36:55,866 INFO L175 MemorySlicer]: Split 64 memory accesses to 1 slices as follows [64]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 2 writes are split as follows [2]. [2024-11-12 20:36:55,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55" (1/1) ... [2024-11-12 20:36:55,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55" (1/1) ... [2024-11-12 20:36:55,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55" (1/1) ... [2024-11-12 20:36:55,880 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55" (1/1) ... [2024-11-12 20:36:55,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55" (1/1) ... [2024-11-12 20:36:55,884 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55" (1/1) ... [2024-11-12 20:36:55,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:36:55,891 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:36:55,891 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:36:55,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:36:55,892 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55" (1/1) ... [2024-11-12 20:36:55,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:36:55,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:36:55,926 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) [2024-11-12 20:36:55,944 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 [2024-11-12 20:36:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 20:36:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:36:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:36:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 20:36:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:36:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-12 20:36:55,986 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-12 20:36:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:36:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:36:56,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:36:56,004 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:36:56,138 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:36:56,140 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:36:56,402 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:36:56,402 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:36:56,762 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:36:56,762 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-12 20:36:56,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:36:56 BoogieIcfgContainer [2024-11-12 20:36:56,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:36:56,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:36:56,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:36:56,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:36:56,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:36:55" (1/3) ... [2024-11-12 20:36:56,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb15829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:36:56, skipping insertion in model container [2024-11-12 20:36:56,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:36:55" (2/3) ... [2024-11-12 20:36:56,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb15829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:36:56, skipping insertion in model container [2024-11-12 20:36:56,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:36:56" (3/3) ... [2024-11-12 20:36:56,773 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_06-tricky_address1.i [2024-11-12 20:36:56,789 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:36:56,790 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-12 20:36:56,790 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:36:56,827 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:36:56,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 58 flow [2024-11-12 20:36:56,892 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-11-12 20:36:56,892 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:36:56,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 26 events. 1/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2024-11-12 20:36:56,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 58 flow [2024-11-12 20:36:56,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 55 flow [2024-11-12 20:36:56,907 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:36:56,913 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;@509a6a53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:36:56,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-12 20:36:56,917 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:36:56,917 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:36:56,917 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:36:56,918 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:36:56,918 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:36:56,919 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:36:56,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:36:56,924 INFO L85 PathProgramCache]: Analyzing trace with hash 343348, now seen corresponding path program 1 times [2024-11-12 20:36:56,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:36:56,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749423105] [2024-11-12 20:36:56,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:36:56,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:36:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:36:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:36:57,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:36:57,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749423105] [2024-11-12 20:36:57,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749423105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:36:57,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:36:57,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:36:57,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681334879] [2024-11-12 20:36:57,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:36:57,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:36:57,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:36:57,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:36:57,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:36:57,343 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-12 20:36:57,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:36:57,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:36:57,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-12 20:36:57,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:36:57,466 INFO L124 PetriNetUnfolderBase]: 37/119 cut-off events. [2024-11-12 20:36:57,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:36:57,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 119 events. 37/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 400 event pairs, 36 based on Foata normal form. 1/109 useless extension candidates. Maximal degree in co-relation 192. Up to 92 conditions per place. [2024-11-12 20:36:57,472 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 18 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-11-12 20:36:57,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 101 flow [2024-11-12 20:36:57,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:36:57,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:36:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-11-12 20:36:57,484 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-12 20:36:57,485 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 55 flow. Second operand 4 states and 56 transitions. [2024-11-12 20:36:57,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 101 flow [2024-11-12 20:36:57,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:36:57,490 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 78 flow [2024-11-12 20:36:57,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-11-12 20:36:57,539 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-11-12 20:36:57,540 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 78 flow [2024-11-12 20:36:57,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:36:57,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:36:57,544 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:36:57,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:36:57,544 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:36:57,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:36:57,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1639079414, now seen corresponding path program 1 times [2024-11-12 20:36:57,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:36:57,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014222005] [2024-11-12 20:36:57,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:36:57,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:36:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:36:57,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:36:57,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:36:57,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014222005] [2024-11-12 20:36:57,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014222005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:36:57,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115059131] [2024-11-12 20:36:57,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:36:57,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:36:57,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:36:57,719 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) [2024-11-12 20:36:57,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:36:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:36:57,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:36:57,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:36:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:36:57,871 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:36:57,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115059131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:36:57,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:36:57,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-12 20:36:57,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422700779] [2024-11-12 20:36:57,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:36:57,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:36:57,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:36:57,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:36:57,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:36:57,887 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-12 20:36:57,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:36:57,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:36:57,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-12 20:36:57,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:36:57,995 INFO L124 PetriNetUnfolderBase]: 37/118 cut-off events. [2024-11-12 20:36:57,996 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:36:57,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 118 events. 37/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 395 event pairs, 36 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 209. Up to 87 conditions per place. [2024-11-12 20:36:57,998 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 14 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2024-11-12 20:36:57,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 114 flow [2024-11-12 20:36:57,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:36:58,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:36:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-11-12 20:36:58,001 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-11-12 20:36:58,001 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 78 flow. Second operand 6 states and 69 transitions. [2024-11-12 20:36:58,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 114 flow [2024-11-12 20:36:58,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:36:58,002 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 84 flow [2024-11-12 20:36:58,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-11-12 20:36:58,004 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-11-12 20:36:58,005 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 84 flow [2024-11-12 20:36:58,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:36:58,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:36:58,006 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:36:58,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:36:58,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:36:58,209 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:36:58,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:36:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash -728145382, now seen corresponding path program 1 times [2024-11-12 20:36:58,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:36:58,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114011016] [2024-11-12 20:36:58,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:36:58,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:36:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:36:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:36:58,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:36:58,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114011016] [2024-11-12 20:36:58,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114011016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:36:58,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:36:58,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:36:58,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197057825] [2024-11-12 20:36:58,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:36:58,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:36:58,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:36:58,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:36:58,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:36:58,268 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-12 20:36:58,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:36:58,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:36:58,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-12 20:36:58,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:36:58,335 INFO L124 PetriNetUnfolderBase]: 37/117 cut-off events. [2024-11-12 20:36:58,335 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-12 20:36:58,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 117 events. 37/117 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 391 event pairs, 36 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 205. Up to 90 conditions per place. [2024-11-12 20:36:58,337 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 15 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2024-11-12 20:36:58,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 118 flow [2024-11-12 20:36:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:36:58,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:36:58,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-11-12 20:36:58,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-12 20:36:58,341 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 84 flow. Second operand 3 states and 42 transitions. [2024-11-12 20:36:58,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 118 flow [2024-11-12 20:36:58,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 96 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-12 20:36:58,342 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 66 flow [2024-11-12 20:36:58,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-12 20:36:58,346 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2024-11-12 20:36:58,346 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 66 flow [2024-11-12 20:36:58,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:36:58,346 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:36:58,346 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:36:58,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:36:58,347 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:36:58,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:36:58,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1757158766, now seen corresponding path program 1 times [2024-11-12 20:36:58,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:36:58,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208870627] [2024-11-12 20:36:58,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:36:58,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:36:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:36:58,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:36:58,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:36:58,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208870627] [2024-11-12 20:36:58,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208870627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:36:58,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512370038] [2024-11-12 20:36:58,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:36:58,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:36:58,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:36:58,446 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) [2024-11-12 20:36:58,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:36:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:36:58,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:36:58,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:36:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:36:58,550 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:36:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:36:58,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512370038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:36:58,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:36:58,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-12 20:36:58,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073081855] [2024-11-12 20:36:58,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:36:58,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:36:58,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:36:58,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:36:58,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:36:58,605 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-12 20:36:58,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 66 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:36:58,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:36:58,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-12 20:36:58,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:36:58,720 INFO L124 PetriNetUnfolderBase]: 37/121 cut-off events. [2024-11-12 20:36:58,721 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-12 20:36:58,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 121 events. 37/121 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 388 event pairs, 36 based on Foata normal form. 2/114 useless extension candidates. Maximal degree in co-relation 198. Up to 88 conditions per place. [2024-11-12 20:36:58,723 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 15 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2024-11-12 20:36:58,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 125 flow [2024-11-12 20:36:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:36:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:36:58,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-11-12 20:36:58,725 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-11-12 20:36:58,725 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 66 flow. Second operand 7 states and 80 transitions. [2024-11-12 20:36:58,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 125 flow [2024-11-12 20:36:58,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 111 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:36:58,726 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 92 flow [2024-11-12 20:36:58,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, 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=92, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-11-12 20:36:58,727 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2024-11-12 20:36:58,727 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 92 flow [2024-11-12 20:36:58,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:36:58,729 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:36:58,729 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:36:58,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 20:36:58,929 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,SelfDestructingSolverStorable3 [2024-11-12 20:36:58,930 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:36:58,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:36:58,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1908642990, now seen corresponding path program 2 times [2024-11-12 20:36:58,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:36:58,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86015514] [2024-11-12 20:36:58,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:36:58,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:36:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:36:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:36:59,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:36:59,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86015514] [2024-11-12 20:36:59,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86015514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:36:59,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792793078] [2024-11-12 20:36:59,098 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:36:59,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:36:59,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:36:59,100 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) [2024-11-12 20:36:59,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:36:59,186 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:36:59,187 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:36:59,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-12 20:36:59,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:36:59,874 INFO L349 Elim1Store]: treesize reduction 78, result has 3.7 percent of original size [2024-11-12 20:36:59,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 80 treesize of output 37 [2024-11-12 20:36:59,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 20:36:59,895 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:36:59,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792793078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:36:59,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:36:59,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2024-11-12 20:36:59,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794251908] [2024-11-12 20:36:59,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:36:59,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:36:59,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:36:59,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:36:59,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:36:59,913 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-12 20:36:59,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-11-12 20:36:59,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:36:59,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-12 20:36:59,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:00,064 INFO L124 PetriNetUnfolderBase]: 50/139 cut-off events. [2024-11-12 20:37:00,065 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-12 20:37:00,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 139 events. 50/139 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 429 event pairs, 16 based on Foata normal form. 7/133 useless extension candidates. Maximal degree in co-relation 244. Up to 68 conditions per place. [2024-11-12 20:37:00,067 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 31 selfloop transitions, 7 changer transitions 3/46 dead transitions. [2024-11-12 20:37:00,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 208 flow [2024-11-12 20:37:00,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:37:00,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:37:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-11-12 20:37:00,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2024-11-12 20:37:00,070 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 92 flow. Second operand 6 states and 86 transitions. [2024-11-12 20:37:00,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 208 flow [2024-11-12 20:37:00,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:37:00,073 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 128 flow [2024-11-12 20:37:00,074 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-11-12 20:37:00,075 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-11-12 20:37:00,076 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 128 flow [2024-11-12 20:37:00,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-11-12 20:37:00,076 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:00,076 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:00,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 20:37:00,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:37:00,278 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:00,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:00,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1909413942, now seen corresponding path program 1 times [2024-11-12 20:37:00,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:00,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202682261] [2024-11-12 20:37:00,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:00,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:37:00,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:00,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202682261] [2024-11-12 20:37:00,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202682261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:37:00,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430805557] [2024-11-12 20:37:00,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:00,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:37:00,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:37:00,398 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) [2024-11-12 20:37:00,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:37:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:00,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 20:37:00,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:37:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:37:00,513 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:37:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:37:00,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430805557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:37:00,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:37:00,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-12 20:37:00,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976359743] [2024-11-12 20:37:00,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:37:00,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 20:37:00,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:00,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 20:37:00,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-12 20:37:00,621 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-12 20:37:00,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 128 flow. Second operand has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:00,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:00,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-12 20:37:00,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:00,757 INFO L124 PetriNetUnfolderBase]: 27/123 cut-off events. [2024-11-12 20:37:00,757 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-12 20:37:00,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 123 events. 27/123 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 373 event pairs, 26 based on Foata normal form. 4/121 useless extension candidates. Maximal degree in co-relation 260. Up to 72 conditions per place. [2024-11-12 20:37:00,759 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 17 selfloop transitions, 15 changer transitions 0/40 dead transitions. [2024-11-12 20:37:00,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 40 transitions, 240 flow [2024-11-12 20:37:00,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 20:37:00,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 20:37:00,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 154 transitions. [2024-11-12 20:37:00,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3802469135802469 [2024-11-12 20:37:00,762 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 128 flow. Second operand 15 states and 154 transitions. [2024-11-12 20:37:00,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 40 transitions, 240 flow [2024-11-12 20:37:00,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 40 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:37:00,768 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 223 flow [2024-11-12 20:37:00,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=223, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2024-11-12 20:37:00,769 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-11-12 20:37:00,770 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 223 flow [2024-11-12 20:37:00,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:00,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:00,770 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:00,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 20:37:00,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:37:00,971 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:00,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:00,972 INFO L85 PathProgramCache]: Analyzing trace with hash -671156554, now seen corresponding path program 2 times [2024-11-12 20:37:00,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:00,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822664826] [2024-11-12 20:37:00,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:00,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:01,298 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:37:01,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:01,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822664826] [2024-11-12 20:37:01,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822664826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:37:01,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745917145] [2024-11-12 20:37:01,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:37:01,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:37:01,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:37:01,301 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) [2024-11-12 20:37:01,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 20:37:01,395 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:37:01,396 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:37:01,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-12 20:37:01,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:37:02,387 INFO L349 Elim1Store]: treesize reduction 78, result has 3.7 percent of original size [2024-11-12 20:37:02,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 10 case distinctions, treesize of input 80 treesize of output 37 [2024-11-12 20:37:02,426 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-12 20:37:02,426 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:37:02,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745917145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:02,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:37:02,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 19 [2024-11-12 20:37:02,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898227472] [2024-11-12 20:37:02,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:02,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:37:02,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:02,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:37:02,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-12 20:37:02,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-12 20:37:02,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 223 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-11-12 20:37:02,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:02,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-12 20:37:02,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:02,690 INFO L124 PetriNetUnfolderBase]: 37/134 cut-off events. [2024-11-12 20:37:02,691 INFO L125 PetriNetUnfolderBase]: For 120/122 co-relation queries the response was YES. [2024-11-12 20:37:02,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 134 events. 37/134 cut-off events. For 120/122 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 405 event pairs, 6 based on Foata normal form. 7/141 useless extension candidates. Maximal degree in co-relation 319. Up to 49 conditions per place. [2024-11-12 20:37:02,694 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 42 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2024-11-12 20:37:02,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 57 transitions, 375 flow [2024-11-12 20:37:02,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:37:02,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:37:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-11-12 20:37:02,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-12 20:37:02,696 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 223 flow. Second operand 6 states and 87 transitions. [2024-11-12 20:37:02,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 57 transitions, 375 flow [2024-11-12 20:37:02,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 365 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-12 20:37:02,703 INFO L231 Difference]: Finished difference. Result has 67 places, 45 transitions, 277 flow [2024-11-12 20:37:02,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=67, PETRI_TRANSITIONS=45} [2024-11-12 20:37:02,703 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-11-12 20:37:02,705 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 45 transitions, 277 flow [2024-11-12 20:37:02,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-11-12 20:37:02,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:02,705 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:02,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-12 20:37:02,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:37:02,906 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:02,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:02,907 INFO L85 PathProgramCache]: Analyzing trace with hash 645084132, now seen corresponding path program 1 times [2024-11-12 20:37:02,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:02,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303145228] [2024-11-12 20:37:02,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:02,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:37:03,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:03,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303145228] [2024-11-12 20:37:03,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303145228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:37:03,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968897744] [2024-11-12 20:37:03,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:03,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:37:03,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:37:03,199 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) [2024-11-12 20:37:03,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 20:37:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:03,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 20:37:03,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:37:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:37:03,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:37:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:37:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968897744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:37:03,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:37:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-12 20:37:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582253979] [2024-11-12 20:37:03,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:37:03,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 20:37:03,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:03,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 20:37:03,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-12 20:37:03,526 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-12 20:37:03,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 45 transitions, 277 flow. Second operand has 23 states, 23 states have (on average 9.26086956521739) internal successors, (213), 23 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:03,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:03,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-12 20:37:03,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:03,720 INFO L124 PetriNetUnfolderBase]: 26/136 cut-off events. [2024-11-12 20:37:03,720 INFO L125 PetriNetUnfolderBase]: For 238/240 co-relation queries the response was YES. [2024-11-12 20:37:03,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 136 events. 26/136 cut-off events. For 238/240 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 404 event pairs, 22 based on Foata normal form. 3/139 useless extension candidates. Maximal degree in co-relation 374. Up to 74 conditions per place. [2024-11-12 20:37:03,722 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 21 selfloop transitions, 21 changer transitions 0/51 dead transitions. [2024-11-12 20:37:03,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 51 transitions, 415 flow [2024-11-12 20:37:03,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-12 20:37:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-12 20:37:03,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 207 transitions. [2024-11-12 20:37:03,725 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-11-12 20:37:03,725 INFO L175 Difference]: Start difference. First operand has 67 places, 45 transitions, 277 flow. Second operand 21 states and 207 transitions. [2024-11-12 20:37:03,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 51 transitions, 415 flow [2024-11-12 20:37:03,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 51 transitions, 415 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:37:03,730 INFO L231 Difference]: Finished difference. Result has 90 places, 51 transitions, 388 flow [2024-11-12 20:37:03,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=388, PETRI_PLACES=90, PETRI_TRANSITIONS=51} [2024-11-12 20:37:03,731 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2024-11-12 20:37:03,731 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 51 transitions, 388 flow [2024-11-12 20:37:03,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.26086956521739) internal successors, (213), 23 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:03,732 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:03,732 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:03,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 20:37:03,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:37:03,933 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:03,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:03,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1070697830, now seen corresponding path program 2 times [2024-11-12 20:37:03,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:03,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984559636] [2024-11-12 20:37:03,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:03,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:05,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:05,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984559636] [2024-11-12 20:37:05,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984559636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:05,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:05,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:37:05,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983225141] [2024-11-12 20:37:05,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:05,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:37:05,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:05,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:37:05,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:37:05,034 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-12 20:37:05,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 51 transitions, 388 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-11-12 20:37:05,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:05,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-12 20:37:05,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:05,212 INFO L124 PetriNetUnfolderBase]: 30/136 cut-off events. [2024-11-12 20:37:05,213 INFO L125 PetriNetUnfolderBase]: For 288/290 co-relation queries the response was YES. [2024-11-12 20:37:05,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 136 events. 30/136 cut-off events. For 288/290 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 378 event pairs, 14 based on Foata normal form. 9/145 useless extension candidates. Maximal degree in co-relation 408. Up to 54 conditions per place. [2024-11-12 20:37:05,216 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 42 selfloop transitions, 7 changer transitions 3/58 dead transitions. [2024-11-12 20:37:05,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 58 transitions, 512 flow [2024-11-12 20:37:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:37:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:37:05,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2024-11-12 20:37:05,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-12 20:37:05,217 INFO L175 Difference]: Start difference. First operand has 90 places, 51 transitions, 388 flow. Second operand 6 states and 81 transitions. [2024-11-12 20:37:05,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 58 transitions, 512 flow [2024-11-12 20:37:05,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 58 transitions, 463 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-11-12 20:37:05,223 INFO L231 Difference]: Finished difference. Result has 81 places, 49 transitions, 339 flow [2024-11-12 20:37:05,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=81, PETRI_TRANSITIONS=49} [2024-11-12 20:37:05,224 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-11-12 20:37:05,224 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 49 transitions, 339 flow [2024-11-12 20:37:05,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-11-12 20:37:05,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:05,224 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:05,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:37:05,225 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:05,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1094597363, now seen corresponding path program 1 times [2024-11-12 20:37:05,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:05,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641837990] [2024-11-12 20:37:05,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:05,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:05,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641837990] [2024-11-12 20:37:05,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641837990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:05,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:05,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:37:05,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284296724] [2024-11-12 20:37:05,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:05,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:37:05,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:37:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:37:05,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-12 20:37:05,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 49 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-11-12 20:37:05,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:05,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-12 20:37:05,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:06,089 INFO L124 PetriNetUnfolderBase]: 30/128 cut-off events. [2024-11-12 20:37:06,089 INFO L125 PetriNetUnfolderBase]: For 264/266 co-relation queries the response was YES. [2024-11-12 20:37:06,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 128 events. 30/128 cut-off events. For 264/266 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 320 event pairs, 8 based on Foata normal form. 9/137 useless extension candidates. Maximal degree in co-relation 391. Up to 51 conditions per place. [2024-11-12 20:37:06,090 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 44 selfloop transitions, 6 changer transitions 4/59 dead transitions. [2024-11-12 20:37:06,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 59 transitions, 477 flow [2024-11-12 20:37:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:37:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:37:06,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2024-11-12 20:37:06,091 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2024-11-12 20:37:06,092 INFO L175 Difference]: Start difference. First operand has 81 places, 49 transitions, 339 flow. Second operand 6 states and 85 transitions. [2024-11-12 20:37:06,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 59 transitions, 477 flow [2024-11-12 20:37:06,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 59 transitions, 451 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-12 20:37:06,095 INFO L231 Difference]: Finished difference. Result has 79 places, 47 transitions, 316 flow [2024-11-12 20:37:06,096 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=79, PETRI_TRANSITIONS=47} [2024-11-12 20:37:06,096 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2024-11-12 20:37:06,096 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 47 transitions, 316 flow [2024-11-12 20:37:06,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-11-12 20:37:06,097 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:06,097 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:06,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 20:37:06,097 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:06,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:06,098 INFO L85 PathProgramCache]: Analyzing trace with hash -927006487, now seen corresponding path program 1 times [2024-11-12 20:37:06,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:06,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256892556] [2024-11-12 20:37:06,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:06,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:09,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:09,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256892556] [2024-11-12 20:37:09,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256892556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:09,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:09,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:37:09,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130154840] [2024-11-12 20:37:09,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:09,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:37:09,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:09,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:37:09,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:37:09,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-12 20:37:09,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 47 transitions, 316 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:09,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:09,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-12 20:37:09,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:11,210 INFO L124 PetriNetUnfolderBase]: 58/184 cut-off events. [2024-11-12 20:37:11,210 INFO L125 PetriNetUnfolderBase]: For 263/263 co-relation queries the response was YES. [2024-11-12 20:37:11,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 184 events. 58/184 cut-off events. For 263/263 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 577 event pairs, 12 based on Foata normal form. 3/187 useless extension candidates. Maximal degree in co-relation 538. Up to 39 conditions per place. [2024-11-12 20:37:11,212 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 61 selfloop transitions, 21 changer transitions 6/89 dead transitions. [2024-11-12 20:37:11,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 665 flow [2024-11-12 20:37:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 20:37:11,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-12 20:37:11,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 134 transitions. [2024-11-12 20:37:11,214 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3101851851851852 [2024-11-12 20:37:11,214 INFO L175 Difference]: Start difference. First operand has 79 places, 47 transitions, 316 flow. Second operand 16 states and 134 transitions. [2024-11-12 20:37:11,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 665 flow [2024-11-12 20:37:11,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 89 transitions, 631 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-12 20:37:11,218 INFO L231 Difference]: Finished difference. Result has 94 places, 62 transitions, 452 flow [2024-11-12 20:37:11,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=452, PETRI_PLACES=94, PETRI_TRANSITIONS=62} [2024-11-12 20:37:11,219 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2024-11-12 20:37:11,219 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 62 transitions, 452 flow [2024-11-12 20:37:11,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:11,219 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:11,219 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:11,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 20:37:11,220 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:11,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:11,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1716545001, now seen corresponding path program 2 times [2024-11-12 20:37:11,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:11,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841444571] [2024-11-12 20:37:11,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:11,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:13,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:13,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841444571] [2024-11-12 20:37:13,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841444571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:13,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:13,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 20:37:13,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793730185] [2024-11-12 20:37:13,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:13,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:37:13,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:13,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:37:13,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:37:13,664 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-12 20:37:13,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 62 transitions, 452 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:13,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:13,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-12 20:37:13,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:15,229 INFO L124 PetriNetUnfolderBase]: 57/217 cut-off events. [2024-11-12 20:37:15,229 INFO L125 PetriNetUnfolderBase]: For 393/393 co-relation queries the response was YES. [2024-11-12 20:37:15,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 217 events. 57/217 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 855 event pairs, 15 based on Foata normal form. 3/220 useless extension candidates. Maximal degree in co-relation 665. Up to 50 conditions per place. [2024-11-12 20:37:15,231 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 62 selfloop transitions, 23 changer transitions 6/94 dead transitions. [2024-11-12 20:37:15,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 94 transitions, 810 flow [2024-11-12 20:37:15,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 20:37:15,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 20:37:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-11-12 20:37:15,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-11-12 20:37:15,232 INFO L175 Difference]: Start difference. First operand has 94 places, 62 transitions, 452 flow. Second operand 12 states and 114 transitions. [2024-11-12 20:37:15,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 94 transitions, 810 flow [2024-11-12 20:37:15,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 94 transitions, 776 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-12 20:37:15,237 INFO L231 Difference]: Finished difference. Result has 108 places, 71 transitions, 595 flow [2024-11-12 20:37:15,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=595, PETRI_PLACES=108, PETRI_TRANSITIONS=71} [2024-11-12 20:37:15,238 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 79 predicate places. [2024-11-12 20:37:15,238 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 71 transitions, 595 flow [2024-11-12 20:37:15,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:15,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:15,238 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:15,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 20:37:15,239 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:15,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:15,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1723416882, now seen corresponding path program 1 times [2024-11-12 20:37:15,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:15,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440557414] [2024-11-12 20:37:15,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:15,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:18,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:18,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440557414] [2024-11-12 20:37:18,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440557414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:18,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:18,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 20:37:18,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141205594] [2024-11-12 20:37:18,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:18,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 20:37:18,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:18,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 20:37:18,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-12 20:37:18,914 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-12 20:37:18,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 71 transitions, 595 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:18,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:18,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-12 20:37:18,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:19,942 INFO L124 PetriNetUnfolderBase]: 63/228 cut-off events. [2024-11-12 20:37:19,942 INFO L125 PetriNetUnfolderBase]: For 541/541 co-relation queries the response was YES. [2024-11-12 20:37:19,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 228 events. 63/228 cut-off events. For 541/541 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 914 event pairs, 30 based on Foata normal form. 3/230 useless extension candidates. Maximal degree in co-relation 752. Up to 124 conditions per place. [2024-11-12 20:37:19,945 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 56 selfloop transitions, 34 changer transitions 2/97 dead transitions. [2024-11-12 20:37:19,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 97 transitions, 912 flow [2024-11-12 20:37:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 20:37:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-12 20:37:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 139 transitions. [2024-11-12 20:37:19,948 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32175925925925924 [2024-11-12 20:37:19,948 INFO L175 Difference]: Start difference. First operand has 108 places, 71 transitions, 595 flow. Second operand 16 states and 139 transitions. [2024-11-12 20:37:19,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 97 transitions, 912 flow [2024-11-12 20:37:19,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 97 transitions, 893 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-12 20:37:19,955 INFO L231 Difference]: Finished difference. Result has 122 places, 84 transitions, 765 flow [2024-11-12 20:37:19,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=765, PETRI_PLACES=122, PETRI_TRANSITIONS=84} [2024-11-12 20:37:19,955 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 93 predicate places. [2024-11-12 20:37:19,956 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 84 transitions, 765 flow [2024-11-12 20:37:19,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:19,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:19,956 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:19,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 20:37:19,957 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:19,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:19,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1768980874, now seen corresponding path program 2 times [2024-11-12 20:37:19,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:19,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530926771] [2024-11-12 20:37:19,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:19,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:23,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:23,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530926771] [2024-11-12 20:37:23,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530926771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:23,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:23,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 20:37:23,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563646688] [2024-11-12 20:37:23,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:23,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 20:37:23,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:23,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 20:37:23,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-12 20:37:23,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-12 20:37:23,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 84 transitions, 765 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:23,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:23,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-12 20:37:23,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:24,859 INFO L124 PetriNetUnfolderBase]: 66/244 cut-off events. [2024-11-12 20:37:24,859 INFO L125 PetriNetUnfolderBase]: For 709/709 co-relation queries the response was YES. [2024-11-12 20:37:24,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 244 events. 66/244 cut-off events. For 709/709 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1053 event pairs, 32 based on Foata normal form. 3/246 useless extension candidates. Maximal degree in co-relation 932. Up to 132 conditions per place. [2024-11-12 20:37:24,861 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 59 selfloop transitions, 36 changer transitions 2/102 dead transitions. [2024-11-12 20:37:24,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 102 transitions, 1039 flow [2024-11-12 20:37:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 20:37:24,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 20:37:24,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 142 transitions. [2024-11-12 20:37:24,863 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3093681917211329 [2024-11-12 20:37:24,863 INFO L175 Difference]: Start difference. First operand has 122 places, 84 transitions, 765 flow. Second operand 17 states and 142 transitions. [2024-11-12 20:37:24,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 102 transitions, 1039 flow [2024-11-12 20:37:24,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 102 transitions, 978 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-12 20:37:24,871 INFO L231 Difference]: Finished difference. Result has 139 places, 89 transitions, 862 flow [2024-11-12 20:37:24,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=862, PETRI_PLACES=139, PETRI_TRANSITIONS=89} [2024-11-12 20:37:24,872 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 110 predicate places. [2024-11-12 20:37:24,872 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 89 transitions, 862 flow [2024-11-12 20:37:24,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:24,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:24,872 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:24,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 20:37:24,872 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:24,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:24,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1795792774, now seen corresponding path program 3 times [2024-11-12 20:37:24,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:24,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469232994] [2024-11-12 20:37:24,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:24,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:27,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:27,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469232994] [2024-11-12 20:37:27,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469232994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:27,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:27,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:37:27,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291855708] [2024-11-12 20:37:27,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:27,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:37:27,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:27,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:37:27,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:37:27,351 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-12 20:37:27,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 89 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:27,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:27,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-12 20:37:27,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:28,227 INFO L124 PetriNetUnfolderBase]: 79/266 cut-off events. [2024-11-12 20:37:28,227 INFO L125 PetriNetUnfolderBase]: For 795/795 co-relation queries the response was YES. [2024-11-12 20:37:28,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1182 conditions, 266 events. 79/266 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1161 event pairs, 34 based on Foata normal form. 3/269 useless extension candidates. Maximal degree in co-relation 1066. Up to 131 conditions per place. [2024-11-12 20:37:28,229 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 68 selfloop transitions, 37 changer transitions 0/106 dead transitions. [2024-11-12 20:37:28,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 106 transitions, 1156 flow [2024-11-12 20:37:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 20:37:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 20:37:28,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 122 transitions. [2024-11-12 20:37:28,231 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3012345679012346 [2024-11-12 20:37:28,231 INFO L175 Difference]: Start difference. First operand has 139 places, 89 transitions, 862 flow. Second operand 15 states and 122 transitions. [2024-11-12 20:37:28,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 106 transitions, 1156 flow [2024-11-12 20:37:28,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 106 transitions, 1086 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-11-12 20:37:28,240 INFO L231 Difference]: Finished difference. Result has 146 places, 92 transitions, 933 flow [2024-11-12 20:37:28,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=933, PETRI_PLACES=146, PETRI_TRANSITIONS=92} [2024-11-12 20:37:28,241 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 117 predicate places. [2024-11-12 20:37:28,241 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 92 transitions, 933 flow [2024-11-12 20:37:28,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:28,242 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:28,242 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:28,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 20:37:28,242 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:28,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:28,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1768058314, now seen corresponding path program 4 times [2024-11-12 20:37:28,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:28,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155978348] [2024-11-12 20:37:28,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:28,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:30,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:30,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155978348] [2024-11-12 20:37:30,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155978348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:30,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:30,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:37:30,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067390382] [2024-11-12 20:37:30,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:30,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:37:30,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:30,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:37:30,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:37:30,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-12 20:37:30,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 92 transitions, 933 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:30,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:30,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-12 20:37:30,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:31,415 INFO L124 PetriNetUnfolderBase]: 84/283 cut-off events. [2024-11-12 20:37:31,415 INFO L125 PetriNetUnfolderBase]: For 958/958 co-relation queries the response was YES. [2024-11-12 20:37:31,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1277 conditions, 283 events. 84/283 cut-off events. For 958/958 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1294 event pairs, 29 based on Foata normal form. 3/286 useless extension candidates. Maximal degree in co-relation 1154. Up to 134 conditions per place. [2024-11-12 20:37:31,418 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 81 selfloop transitions, 38 changer transitions 0/120 dead transitions. [2024-11-12 20:37:31,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 120 transitions, 1338 flow [2024-11-12 20:37:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 20:37:31,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 20:37:31,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 123 transitions. [2024-11-12 20:37:31,420 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3037037037037037 [2024-11-12 20:37:31,420 INFO L175 Difference]: Start difference. First operand has 146 places, 92 transitions, 933 flow. Second operand 15 states and 123 transitions. [2024-11-12 20:37:31,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 120 transitions, 1338 flow [2024-11-12 20:37:31,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 120 transitions, 1257 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-11-12 20:37:31,430 INFO L231 Difference]: Finished difference. Result has 155 places, 100 transitions, 1033 flow [2024-11-12 20:37:31,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1033, PETRI_PLACES=155, PETRI_TRANSITIONS=100} [2024-11-12 20:37:31,432 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-11-12 20:37:31,432 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 100 transitions, 1033 flow [2024-11-12 20:37:31,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:31,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:31,433 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:31,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 20:37:31,433 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:31,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:31,434 INFO L85 PathProgramCache]: Analyzing trace with hash -754495472, now seen corresponding path program 5 times [2024-11-12 20:37:31,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:31,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882228659] [2024-11-12 20:37:31,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:31,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:34,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:34,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882228659] [2024-11-12 20:37:34,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882228659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:34,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:34,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:37:34,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855788500] [2024-11-12 20:37:34,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:34,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:37:34,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:34,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:37:34,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:37:34,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-12 20:37:34,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 100 transitions, 1033 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:34,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:34,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-12 20:37:34,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:35,563 INFO L124 PetriNetUnfolderBase]: 67/270 cut-off events. [2024-11-12 20:37:35,563 INFO L125 PetriNetUnfolderBase]: For 1213/1216 co-relation queries the response was YES. [2024-11-12 20:37:35,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 270 events. 67/270 cut-off events. For 1213/1216 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1312 event pairs, 32 based on Foata normal form. 6/275 useless extension candidates. Maximal degree in co-relation 1174. Up to 131 conditions per place. [2024-11-12 20:37:35,566 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 62 selfloop transitions, 35 changer transitions 0/112 dead transitions. [2024-11-12 20:37:35,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 112 transitions, 1294 flow [2024-11-12 20:37:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:37:35,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:37:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 134 transitions. [2024-11-12 20:37:35,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3544973544973545 [2024-11-12 20:37:35,568 INFO L175 Difference]: Start difference. First operand has 155 places, 100 transitions, 1033 flow. Second operand 14 states and 134 transitions. [2024-11-12 20:37:35,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 112 transitions, 1294 flow [2024-11-12 20:37:35,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 112 transitions, 1231 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-11-12 20:37:35,578 INFO L231 Difference]: Finished difference. Result has 163 places, 103 transitions, 1097 flow [2024-11-12 20:37:35,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1097, PETRI_PLACES=163, PETRI_TRANSITIONS=103} [2024-11-12 20:37:35,579 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-11-12 20:37:35,579 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 103 transitions, 1097 flow [2024-11-12 20:37:35,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:35,579 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:35,580 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:35,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 20:37:35,580 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:35,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:35,582 INFO L85 PathProgramCache]: Analyzing trace with hash -935943787, now seen corresponding path program 3 times [2024-11-12 20:37:35,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:35,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374521248] [2024-11-12 20:37:35,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:35,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:37,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:37,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374521248] [2024-11-12 20:37:37,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374521248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:37,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:37,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:37:37,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935007220] [2024-11-12 20:37:37,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:37,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:37:37,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:37,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:37:37,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:37:37,699 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-12 20:37:37,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 103 transitions, 1097 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:37,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:37,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-12 20:37:37,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:38,621 INFO L124 PetriNetUnfolderBase]: 100/338 cut-off events. [2024-11-12 20:37:38,621 INFO L125 PetriNetUnfolderBase]: For 1327/1327 co-relation queries the response was YES. [2024-11-12 20:37:38,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 338 events. 100/338 cut-off events. For 1327/1327 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1720 event pairs, 33 based on Foata normal form. 3/341 useless extension candidates. Maximal degree in co-relation 1459. Up to 138 conditions per place. [2024-11-12 20:37:38,624 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 85 selfloop transitions, 38 changer transitions 0/124 dead transitions. [2024-11-12 20:37:38,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 124 transitions, 1484 flow [2024-11-12 20:37:38,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 20:37:38,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 20:37:38,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 124 transitions. [2024-11-12 20:37:38,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30617283950617286 [2024-11-12 20:37:38,626 INFO L175 Difference]: Start difference. First operand has 163 places, 103 transitions, 1097 flow. Second operand 15 states and 124 transitions. [2024-11-12 20:37:38,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 124 transitions, 1484 flow [2024-11-12 20:37:38,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 124 transitions, 1457 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-12 20:37:38,637 INFO L231 Difference]: Finished difference. Result has 178 places, 111 transitions, 1302 flow [2024-11-12 20:37:38,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1302, PETRI_PLACES=178, PETRI_TRANSITIONS=111} [2024-11-12 20:37:38,637 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 149 predicate places. [2024-11-12 20:37:38,638 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 111 transitions, 1302 flow [2024-11-12 20:37:38,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:38,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:38,638 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:38,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-12 20:37:38,638 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:38,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:38,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1185294457, now seen corresponding path program 4 times [2024-11-12 20:37:38,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:38,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837412118] [2024-11-12 20:37:38,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:38,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:40,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:40,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837412118] [2024-11-12 20:37:40,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837412118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:40,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:40,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:37:40,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423838831] [2024-11-12 20:37:40,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:40,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:37:40,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:40,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:37:40,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:37:40,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-12 20:37:40,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 111 transitions, 1302 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:40,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:40,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-12 20:37:40,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:41,243 INFO L124 PetriNetUnfolderBase]: 107/360 cut-off events. [2024-11-12 20:37:41,243 INFO L125 PetriNetUnfolderBase]: For 1711/1711 co-relation queries the response was YES. [2024-11-12 20:37:41,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1769 conditions, 360 events. 107/360 cut-off events. For 1711/1711 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1891 event pairs, 39 based on Foata normal form. 3/363 useless extension candidates. Maximal degree in co-relation 1628. Up to 156 conditions per place. [2024-11-12 20:37:41,246 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 84 selfloop transitions, 43 changer transitions 0/128 dead transitions. [2024-11-12 20:37:41,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 128 transitions, 1638 flow [2024-11-12 20:37:41,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 20:37:41,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 20:37:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 119 transitions. [2024-11-12 20:37:41,248 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2938271604938272 [2024-11-12 20:37:41,248 INFO L175 Difference]: Start difference. First operand has 178 places, 111 transitions, 1302 flow. Second operand 15 states and 119 transitions. [2024-11-12 20:37:41,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 128 transitions, 1638 flow [2024-11-12 20:37:41,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 128 transitions, 1596 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-12 20:37:41,260 INFO L231 Difference]: Finished difference. Result has 189 places, 115 transitions, 1428 flow [2024-11-12 20:37:41,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1428, PETRI_PLACES=189, PETRI_TRANSITIONS=115} [2024-11-12 20:37:41,261 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-11-12 20:37:41,261 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 115 transitions, 1428 flow [2024-11-12 20:37:41,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:41,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:41,262 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:41,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 20:37:41,262 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:41,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:41,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1199161687, now seen corresponding path program 5 times [2024-11-12 20:37:41,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:41,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009355894] [2024-11-12 20:37:41,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:41,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:42,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:42,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009355894] [2024-11-12 20:37:42,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009355894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:42,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:42,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:37:42,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072198019] [2024-11-12 20:37:42,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:42,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:37:42,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:42,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:37:42,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:37:42,419 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-12 20:37:42,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 115 transitions, 1428 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:42,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:42,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-12 20:37:42,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:42,957 INFO L124 PetriNetUnfolderBase]: 108/368 cut-off events. [2024-11-12 20:37:42,957 INFO L125 PetriNetUnfolderBase]: For 2056/2056 co-relation queries the response was YES. [2024-11-12 20:37:42,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 368 events. 108/368 cut-off events. For 2056/2056 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1977 event pairs, 30 based on Foata normal form. 3/371 useless extension candidates. Maximal degree in co-relation 1737. Up to 144 conditions per place. [2024-11-12 20:37:42,961 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 89 selfloop transitions, 56 changer transitions 0/146 dead transitions. [2024-11-12 20:37:42,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 146 transitions, 1935 flow [2024-11-12 20:37:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 20:37:42,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 20:37:42,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 131 transitions. [2024-11-12 20:37:42,962 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28540305010893247 [2024-11-12 20:37:42,963 INFO L175 Difference]: Start difference. First operand has 189 places, 115 transitions, 1428 flow. Second operand 17 states and 131 transitions. [2024-11-12 20:37:42,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 146 transitions, 1935 flow [2024-11-12 20:37:42,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 146 transitions, 1826 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-11-12 20:37:42,979 INFO L231 Difference]: Finished difference. Result has 200 places, 129 transitions, 1600 flow [2024-11-12 20:37:42,979 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1600, PETRI_PLACES=200, PETRI_TRANSITIONS=129} [2024-11-12 20:37:42,980 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 171 predicate places. [2024-11-12 20:37:42,980 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 129 transitions, 1600 flow [2024-11-12 20:37:42,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:42,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:42,981 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:42,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-12 20:37:42,981 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:42,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:42,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1025730504, now seen corresponding path program 1 times [2024-11-12 20:37:42,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:42,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522695765] [2024-11-12 20:37:42,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:42,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:45,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:45,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522695765] [2024-11-12 20:37:45,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522695765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:45,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:45,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 20:37:45,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958774702] [2024-11-12 20:37:45,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:45,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:37:45,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:45,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:37:45,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:37:45,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-12 20:37:45,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 129 transitions, 1600 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:45,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:45,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-12 20:37:45,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:46,058 INFO L124 PetriNetUnfolderBase]: 107/365 cut-off events. [2024-11-12 20:37:46,058 INFO L125 PetriNetUnfolderBase]: For 2066/2066 co-relation queries the response was YES. [2024-11-12 20:37:46,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1962 conditions, 365 events. 107/365 cut-off events. For 2066/2066 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2004 event pairs, 2 based on Foata normal form. 2/367 useless extension candidates. Maximal degree in co-relation 1833. Up to 103 conditions per place. [2024-11-12 20:37:46,063 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 114 selfloop transitions, 37 changer transitions 0/152 dead transitions. [2024-11-12 20:37:46,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 152 transitions, 2106 flow [2024-11-12 20:37:46,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 20:37:46,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 20:37:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 92 transitions. [2024-11-12 20:37:46,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30976430976430974 [2024-11-12 20:37:46,065 INFO L175 Difference]: Start difference. First operand has 200 places, 129 transitions, 1600 flow. Second operand 11 states and 92 transitions. [2024-11-12 20:37:46,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 152 transitions, 2106 flow [2024-11-12 20:37:46,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 152 transitions, 1982 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-11-12 20:37:46,079 INFO L231 Difference]: Finished difference. Result has 194 places, 128 transitions, 1544 flow [2024-11-12 20:37:46,079 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1544, PETRI_PLACES=194, PETRI_TRANSITIONS=128} [2024-11-12 20:37:46,079 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-11-12 20:37:46,079 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 128 transitions, 1544 flow [2024-11-12 20:37:46,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:46,080 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:46,080 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:46,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-12 20:37:46,081 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:46,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:46,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1024767452, now seen corresponding path program 1 times [2024-11-12 20:37:46,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:46,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056059732] [2024-11-12 20:37:46,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:46,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:48,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:48,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056059732] [2024-11-12 20:37:48,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056059732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:48,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:48,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:37:48,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218552252] [2024-11-12 20:37:48,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:48,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:37:48,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:48,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:37:48,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:37:48,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-12 20:37:48,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 128 transitions, 1544 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:48,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:48,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-12 20:37:48,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:49,763 INFO L124 PetriNetUnfolderBase]: 81/332 cut-off events. [2024-11-12 20:37:49,763 INFO L125 PetriNetUnfolderBase]: For 2183/2183 co-relation queries the response was YES. [2024-11-12 20:37:49,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1808 conditions, 332 events. 81/332 cut-off events. For 2183/2183 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1878 event pairs, 28 based on Foata normal form. 3/331 useless extension candidates. Maximal degree in co-relation 1665. Up to 195 conditions per place. [2024-11-12 20:37:49,767 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 80 selfloop transitions, 38 changer transitions 7/144 dead transitions. [2024-11-12 20:37:49,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 144 transitions, 1890 flow [2024-11-12 20:37:49,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 20:37:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 20:37:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2024-11-12 20:37:49,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3646723646723647 [2024-11-12 20:37:49,769 INFO L175 Difference]: Start difference. First operand has 194 places, 128 transitions, 1544 flow. Second operand 13 states and 128 transitions. [2024-11-12 20:37:49,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 144 transitions, 1890 flow [2024-11-12 20:37:49,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 144 transitions, 1820 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-12 20:37:49,782 INFO L231 Difference]: Finished difference. Result has 198 places, 124 transitions, 1526 flow [2024-11-12 20:37:49,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1526, PETRI_PLACES=198, PETRI_TRANSITIONS=124} [2024-11-12 20:37:49,783 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 169 predicate places. [2024-11-12 20:37:49,783 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 124 transitions, 1526 flow [2024-11-12 20:37:49,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:49,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:49,783 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:49,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-12 20:37:49,783 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:49,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:49,784 INFO L85 PathProgramCache]: Analyzing trace with hash 996168092, now seen corresponding path program 2 times [2024-11-12 20:37:49,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:49,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666790824] [2024-11-12 20:37:49,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:49,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:52,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:52,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666790824] [2024-11-12 20:37:52,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666790824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:52,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:52,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:37:52,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481771309] [2024-11-12 20:37:52,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:52,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:37:52,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:52,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:37:52,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:37:52,806 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-12 20:37:52,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 124 transitions, 1526 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:52,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:52,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-12 20:37:52,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:53,932 INFO L124 PetriNetUnfolderBase]: 75/315 cut-off events. [2024-11-12 20:37:53,932 INFO L125 PetriNetUnfolderBase]: For 2180/2180 co-relation queries the response was YES. [2024-11-12 20:37:53,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 315 events. 75/315 cut-off events. For 2180/2180 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1708 event pairs, 30 based on Foata normal form. 6/321 useless extension candidates. Maximal degree in co-relation 1628. Up to 182 conditions per place. [2024-11-12 20:37:53,936 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 68 selfloop transitions, 34 changer transitions 12/132 dead transitions. [2024-11-12 20:37:53,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 132 transitions, 1774 flow [2024-11-12 20:37:53,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 20:37:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 20:37:53,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-11-12 20:37:53,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3561253561253561 [2024-11-12 20:37:53,938 INFO L175 Difference]: Start difference. First operand has 198 places, 124 transitions, 1526 flow. Second operand 13 states and 125 transitions. [2024-11-12 20:37:53,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 132 transitions, 1774 flow [2024-11-12 20:37:53,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 132 transitions, 1655 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-11-12 20:37:53,950 INFO L231 Difference]: Finished difference. Result has 192 places, 116 transitions, 1371 flow [2024-11-12 20:37:53,950 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1371, PETRI_PLACES=192, PETRI_TRANSITIONS=116} [2024-11-12 20:37:53,950 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2024-11-12 20:37:53,950 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 116 transitions, 1371 flow [2024-11-12 20:37:53,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:53,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:53,951 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:53,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-12 20:37:53,951 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:53,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:53,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1886316128, now seen corresponding path program 3 times [2024-11-12 20:37:53,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:53,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574271978] [2024-11-12 20:37:53,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:53,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:56,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:56,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574271978] [2024-11-12 20:37:56,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574271978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:56,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:56,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:37:56,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188276363] [2024-11-12 20:37:56,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:56,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:37:56,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:56,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:37:56,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:37:56,898 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-12 20:37:56,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 116 transitions, 1371 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:56,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:56,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-12 20:37:56,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:37:57,992 INFO L124 PetriNetUnfolderBase]: 67/283 cut-off events. [2024-11-12 20:37:57,992 INFO L125 PetriNetUnfolderBase]: For 1755/1755 co-relation queries the response was YES. [2024-11-12 20:37:57,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 283 events. 67/283 cut-off events. For 1755/1755 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1433 event pairs, 29 based on Foata normal form. 3/286 useless extension candidates. Maximal degree in co-relation 1428. Up to 168 conditions per place. [2024-11-12 20:37:57,994 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 64 selfloop transitions, 33 changer transitions 11/123 dead transitions. [2024-11-12 20:37:57,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 123 transitions, 1592 flow [2024-11-12 20:37:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:37:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:37:57,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 132 transitions. [2024-11-12 20:37:57,996 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3492063492063492 [2024-11-12 20:37:57,996 INFO L175 Difference]: Start difference. First operand has 192 places, 116 transitions, 1371 flow. Second operand 14 states and 132 transitions. [2024-11-12 20:37:57,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 123 transitions, 1592 flow [2024-11-12 20:37:58,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 123 transitions, 1465 flow, removed 2 selfloop flow, removed 20 redundant places. [2024-11-12 20:37:58,006 INFO L231 Difference]: Finished difference. Result has 179 places, 109 transitions, 1238 flow [2024-11-12 20:37:58,006 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1238, PETRI_PLACES=179, PETRI_TRANSITIONS=109} [2024-11-12 20:37:58,007 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2024-11-12 20:37:58,007 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 109 transitions, 1238 flow [2024-11-12 20:37:58,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:37:58,007 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:37:58,007 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:37:58,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-12 20:37:58,008 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:37:58,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:37:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1673287838, now seen corresponding path program 1 times [2024-11-12 20:37:58,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:37:58,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973873468] [2024-11-12 20:37:58,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:37:58,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:37:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:37:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:37:59,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:37:59,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973873468] [2024-11-12 20:37:59,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973873468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:37:59,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:37:59,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:37:59,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543670959] [2024-11-12 20:37:59,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:37:59,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 20:37:59,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:37:59,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 20:37:59,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:37:59,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-12 20:37:59,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 109 transitions, 1238 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2024-11-12 20:37:59,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:37:59,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-12 20:37:59,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:38:00,703 INFO L124 PetriNetUnfolderBase]: 58/254 cut-off events. [2024-11-12 20:38:00,703 INFO L125 PetriNetUnfolderBase]: For 1445/1445 co-relation queries the response was YES. [2024-11-12 20:38:00,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 254 events. 58/254 cut-off events. For 1445/1445 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1224 event pairs, 22 based on Foata normal form. 9/263 useless extension candidates. Maximal degree in co-relation 1253. Up to 114 conditions per place. [2024-11-12 20:38:00,706 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 62 selfloop transitions, 16 changer transitions 29/119 dead transitions. [2024-11-12 20:38:00,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 119 transitions, 1491 flow [2024-11-12 20:38:00,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 20:38:00,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 20:38:00,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-11-12 20:38:00,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39094650205761317 [2024-11-12 20:38:00,707 INFO L175 Difference]: Start difference. First operand has 179 places, 109 transitions, 1238 flow. Second operand 9 states and 95 transitions. [2024-11-12 20:38:00,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 119 transitions, 1491 flow [2024-11-12 20:38:00,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 119 transitions, 1359 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-11-12 20:38:00,733 INFO L231 Difference]: Finished difference. Result has 163 places, 86 transitions, 846 flow [2024-11-12 20:38:00,734 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=846, PETRI_PLACES=163, PETRI_TRANSITIONS=86} [2024-11-12 20:38:00,734 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-11-12 20:38:00,734 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 86 transitions, 846 flow [2024-11-12 20:38:00,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2024-11-12 20:38:00,735 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:38:00,735 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:38:00,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-12 20:38:00,736 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:38:00,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:38:00,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1458498406, now seen corresponding path program 1 times [2024-11-12 20:38:00,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:38:00,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067539576] [2024-11-12 20:38:00,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:38:00,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:38:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:38:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:38:01,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:38:01,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067539576] [2024-11-12 20:38:01,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067539576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:38:01,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:38:01,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 20:38:02,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816069713] [2024-11-12 20:38:02,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:38:02,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:38:02,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:38:02,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:38:02,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:38:02,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-12 20:38:02,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 86 transitions, 846 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:38:02,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:38:02,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-12 20:38:02,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:38:02,603 INFO L124 PetriNetUnfolderBase]: 44/194 cut-off events. [2024-11-12 20:38:02,603 INFO L125 PetriNetUnfolderBase]: For 801/801 co-relation queries the response was YES. [2024-11-12 20:38:02,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 194 events. 44/194 cut-off events. For 801/801 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 758 event pairs, 9 based on Foata normal form. 2/196 useless extension candidates. Maximal degree in co-relation 797. Up to 51 conditions per place. [2024-11-12 20:38:02,604 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 53 selfloop transitions, 38 changer transitions 0/98 dead transitions. [2024-11-12 20:38:02,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 98 transitions, 1100 flow [2024-11-12 20:38:02,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 20:38:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 20:38:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 108 transitions. [2024-11-12 20:38:02,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3076923076923077 [2024-11-12 20:38:02,606 INFO L175 Difference]: Start difference. First operand has 163 places, 86 transitions, 846 flow. Second operand 13 states and 108 transitions. [2024-11-12 20:38:02,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 98 transitions, 1100 flow [2024-11-12 20:38:02,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 98 transitions, 978 flow, removed 11 selfloop flow, removed 16 redundant places. [2024-11-12 20:38:02,609 INFO L231 Difference]: Finished difference. Result has 148 places, 93 transitions, 855 flow [2024-11-12 20:38:02,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=855, PETRI_PLACES=148, PETRI_TRANSITIONS=93} [2024-11-12 20:38:02,610 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 119 predicate places. [2024-11-12 20:38:02,610 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 93 transitions, 855 flow [2024-11-12 20:38:02,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:38:02,610 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:38:02,610 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:38:02,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-12 20:38:02,611 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:38:02,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:38:02,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1914522814, now seen corresponding path program 4 times [2024-11-12 20:38:02,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:38:02,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010510332] [2024-11-12 20:38:02,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:38:02,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:38:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:38:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-12 20:38:05,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:38:05,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010510332] [2024-11-12 20:38:05,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010510332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:38:05,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:38:05,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:38:05,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656693214] [2024-11-12 20:38:05,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:38:05,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:38:05,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:38:05,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:38:05,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:38:05,418 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-12 20:38:05,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 93 transitions, 855 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:38:05,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:38:05,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-12 20:38:05,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:38:06,429 INFO L124 PetriNetUnfolderBase]: 40/187 cut-off events. [2024-11-12 20:38:06,429 INFO L125 PetriNetUnfolderBase]: For 531/531 co-relation queries the response was YES. [2024-11-12 20:38:06,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 187 events. 40/187 cut-off events. For 531/531 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 729 event pairs, 6 based on Foata normal form. 3/190 useless extension candidates. Maximal degree in co-relation 775. Up to 100 conditions per place. [2024-11-12 20:38:06,431 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 59 selfloop transitions, 16 changer transitions 11/97 dead transitions. [2024-11-12 20:38:06,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 97 transitions, 1031 flow [2024-11-12 20:38:06,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 20:38:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 20:38:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 117 transitions. [2024-11-12 20:38:06,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-12 20:38:06,432 INFO L175 Difference]: Start difference. First operand has 148 places, 93 transitions, 855 flow. Second operand 13 states and 117 transitions. [2024-11-12 20:38:06,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 97 transitions, 1031 flow [2024-11-12 20:38:06,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 97 transitions, 982 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-11-12 20:38:06,437 INFO L231 Difference]: Finished difference. Result has 152 places, 85 transitions, 768 flow [2024-11-12 20:38:06,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=768, PETRI_PLACES=152, PETRI_TRANSITIONS=85} [2024-11-12 20:38:06,438 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2024-11-12 20:38:06,438 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 85 transitions, 768 flow [2024-11-12 20:38:06,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:38:06,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:38:06,438 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:38:06,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-12 20:38:06,439 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:38:06,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:38:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1480693726, now seen corresponding path program 2 times [2024-11-12 20:38:06,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:38:06,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183211917] [2024-11-12 20:38:06,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:38:06,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:38:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat