./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 e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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 0.3.0-?-e2fb8be-m [2025-03-09 06:33:21,255 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:33:21,302 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:33:21,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:33:21,307 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:33:21,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:33:21,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:33:21,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:33:21,325 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:33:21,325 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:33:21,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:33:21,326 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:33:21,326 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:33:21,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:33:21,326 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:33:21,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:33:21,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:33:21,326 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:33:21,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:33:21,326 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:33:21,327 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:33:21,327 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:33:21,327 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:33:21,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:33:21,327 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:33:21,327 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:33:21,327 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:33:21,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:33:21,327 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:33:21,327 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:33:21,327 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:33:21,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:33:21,327 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:33:21,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:33:21,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:33:21,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:33:21,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:33:21,328 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:33:21,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:33:21,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:33:21,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:33:21,328 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:33:21,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:33:21,328 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:33:21,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:33:21,328 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 [2025-03-09 06:33:21,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:33:21,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:33:21,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:33:21,566 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:33:21,566 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:33:21,568 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2025-03-09 06:33:22,731 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ecfb6359/8649df3fdbcc453b8f47c1b0ff01a464/FLAG32b80c1a7 [2025-03-09 06:33:23,016 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:33:23,016 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2025-03-09 06:33:23,031 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ecfb6359/8649df3fdbcc453b8f47c1b0ff01a464/FLAG32b80c1a7 [2025-03-09 06:33:23,292 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ecfb6359/8649df3fdbcc453b8f47c1b0ff01a464 [2025-03-09 06:33:23,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:33:23,296 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:33:23,297 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:33:23,297 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:33:23,300 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:33:23,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:33:23" (1/1) ... [2025-03-09 06:33:23,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf32be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23, skipping insertion in model container [2025-03-09 06:33:23,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:33:23" (1/1) ... [2025-03-09 06:33:23,332 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:33:23,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:33:23,629 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:33:23,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:33:23,708 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:33:23,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23 WrapperNode [2025-03-09 06:33:23,709 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:33:23,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:33:23,710 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:33:23,710 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:33:23,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23" (1/1) ... [2025-03-09 06:33:23,723 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23" (1/1) ... [2025-03-09 06:33:23,740 INFO L138 Inliner]: procedures = 265, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 130 [2025-03-09 06:33:23,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:33:23,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:33:23,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:33:23,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:33:23,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23" (1/1) ... [2025-03-09 06:33:23,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23" (1/1) ... [2025-03-09 06:33:23,748 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23" (1/1) ... [2025-03-09 06:33:23,761 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]. [2025-03-09 06:33:23,761 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23" (1/1) ... [2025-03-09 06:33:23,761 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23" (1/1) ... [2025-03-09 06:33:23,768 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23" (1/1) ... [2025-03-09 06:33:23,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23" (1/1) ... [2025-03-09 06:33:23,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23" (1/1) ... [2025-03-09 06:33:23,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23" (1/1) ... [2025-03-09 06:33:23,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:33:23,772 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:33:23,772 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:33:23,772 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:33:23,775 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23" (1/1) ... [2025-03-09 06:33:23,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:33:23,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:23,802 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) [2025-03-09 06:33:23,803 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 [2025-03-09 06:33:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-09 06:33:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:33:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:33:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-09 06:33:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:33:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-09 06:33:23,817 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-09 06:33:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:33:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:33:23,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:33:23,818 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:33:23,893 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:33:23,895 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:33:24,116 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:33:24,116 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:33:24,374 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:33:24,374 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:33:24,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:33:24 BoogieIcfgContainer [2025-03-09 06:33:24,375 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:33:24,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:33:24,376 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:33:24,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:33:24,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:33:23" (1/3) ... [2025-03-09 06:33:24,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595156d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:33:24, skipping insertion in model container [2025-03-09 06:33:24,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:23" (2/3) ... [2025-03-09 06:33:24,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595156d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:33:24, skipping insertion in model container [2025-03-09 06:33:24,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:33:24" (3/3) ... [2025-03-09 06:33:24,380 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_06-tricky_address1.i [2025-03-09 06:33:24,389 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:33:24,390 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_06-tricky_address1.i that has 2 procedures, 27 locations, 1 initial locations, 1 loop locations, and 6 error locations. [2025-03-09 06:33:24,390 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:33:24,416 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:33:24,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 58 flow [2025-03-09 06:33:24,483 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2025-03-09 06:33:24,487 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:33:24,490 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 5. Compared 47 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. [2025-03-09 06:33:24,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 58 flow [2025-03-09 06:33:24,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 55 flow [2025-03-09 06:33:24,501 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:33:24,508 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;@4c82cbd9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:33:24,508 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-03-09 06:33:24,513 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:33:24,513 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:33:24,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:33:24,514 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:24,515 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:33:24,515 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:24,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:24,519 INFO L85 PathProgramCache]: Analyzing trace with hash 318374, now seen corresponding path program 1 times [2025-03-09 06:33:24,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:24,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939501467] [2025-03-09 06:33:24,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:24,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:24,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:33:24,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:33:24,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:24,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:24,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:24,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939501467] [2025-03-09 06:33:24,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939501467] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:24,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:24,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:33:24,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772076588] [2025-03-09 06:33:24,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:24,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:33:24,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:24,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:33:24,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:33:24,766 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 06:33:24,768 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) [2025-03-09 06:33:24,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:24,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 06:33:24,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:24,864 INFO L124 PetriNetUnfolderBase]: 37/119 cut-off events. [2025-03-09 06:33:24,865 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:33:24,865 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 14. Compared 402 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. [2025-03-09 06:33:24,866 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 18 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2025-03-09 06:33:24,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 101 flow [2025-03-09 06:33:24,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:33:24,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:33:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2025-03-09 06:33:24,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2025-03-09 06:33:24,884 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 55 flow. Second operand 4 states and 56 transitions. [2025-03-09 06:33:24,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 101 flow [2025-03-09 06:33:24,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:33:24,891 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 78 flow [2025-03-09 06:33:24,893 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} [2025-03-09 06:33:24,896 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2025-03-09 06:33:24,897 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 78 flow [2025-03-09 06:33:24,897 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) [2025-03-09 06:33:24,898 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:24,898 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:33:24,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:33:24,899 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:24,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:24,900 INFO L85 PathProgramCache]: Analyzing trace with hash 895001151, now seen corresponding path program 1 times [2025-03-09 06:33:24,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:24,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751385652] [2025-03-09 06:33:24,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:24,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:24,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:33:24,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:33:24,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:24,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:25,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:25,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:25,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751385652] [2025-03-09 06:33:25,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751385652] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:33:25,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372897569] [2025-03-09 06:33:25,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:25,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:25,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:25,060 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) [2025-03-09 06:33:25,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:33:25,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:33:25,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:33:25,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:25,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:25,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:33:25,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:33:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:25,171 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:33:25,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372897569] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:25,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:33:25,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:33:25,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781901575] [2025-03-09 06:33:25,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:25,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:33:25,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:25,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:33:25,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:33:25,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 06:33:25,186 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) [2025-03-09 06:33:25,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:25,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 06:33:25,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:25,282 INFO L124 PetriNetUnfolderBase]: 37/118 cut-off events. [2025-03-09 06:33:25,282 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:33:25,283 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 14. Compared 398 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. [2025-03-09 06:33:25,284 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 14 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2025-03-09 06:33:25,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 114 flow [2025-03-09 06:33:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:33:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:33:25,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2025-03-09 06:33:25,287 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2025-03-09 06:33:25,287 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 78 flow. Second operand 6 states and 69 transitions. [2025-03-09 06:33:25,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 114 flow [2025-03-09 06:33:25,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:33:25,289 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 84 flow [2025-03-09 06:33:25,290 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} [2025-03-09 06:33:25,291 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2025-03-09 06:33:25,291 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 84 flow [2025-03-09 06:33:25,291 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) [2025-03-09 06:33:25,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:25,291 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:33:25,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:33:25,492 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 [2025-03-09 06:33:25,492 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:25,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:25,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1975232161, now seen corresponding path program 1 times [2025-03-09 06:33:25,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:25,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997450876] [2025-03-09 06:33:25,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:25,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:25,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:33:25,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:33:25,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:25,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:25,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:33:25,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:25,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997450876] [2025-03-09 06:33:25,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997450876] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:25,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:25,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:33:25,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981883408] [2025-03-09 06:33:25,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:25,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:33:25,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:25,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:33:25,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:33:25,547 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 06:33:25,547 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) [2025-03-09 06:33:25,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:25,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 06:33:25,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:25,630 INFO L124 PetriNetUnfolderBase]: 37/117 cut-off events. [2025-03-09 06:33:25,631 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 06:33:25,631 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 393 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. [2025-03-09 06:33:25,632 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 15 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2025-03-09 06:33:25,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 118 flow [2025-03-09 06:33:25,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:33:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:33:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2025-03-09 06:33:25,633 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2025-03-09 06:33:25,633 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 84 flow. Second operand 3 states and 42 transitions. [2025-03-09 06:33:25,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 118 flow [2025-03-09 06:33:25,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 96 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-09 06:33:25,634 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 66 flow [2025-03-09 06:33:25,634 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} [2025-03-09 06:33:25,635 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2025-03-09 06:33:25,635 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 66 flow [2025-03-09 06:33:25,635 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) [2025-03-09 06:33:25,635 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:25,635 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:25,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:33:25,635 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:25,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:25,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1147853000, now seen corresponding path program 1 times [2025-03-09 06:33:25,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:25,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516172050] [2025-03-09 06:33:25,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:25,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:25,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:33:25,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:33:25,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:25,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:25,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:25,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516172050] [2025-03-09 06:33:25,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516172050] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:33:25,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895882485] [2025-03-09 06:33:25,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:25,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:25,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:25,728 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) [2025-03-09 06:33:25,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:33:25,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:33:25,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:33:25,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:25,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:25,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:33:25,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:33:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:25,814 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:33:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:25,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895882485] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:33:25,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:33:25,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-09 06:33:25,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940187651] [2025-03-09 06:33:25,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:33:25,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:25,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:25,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:25,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:25,858 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 06:33:25,859 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) [2025-03-09 06:33:25,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:25,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 06:33:25,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:25,979 INFO L124 PetriNetUnfolderBase]: 37/121 cut-off events. [2025-03-09 06:33:25,980 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-03-09 06:33:25,980 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 390 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. [2025-03-09 06:33:25,981 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 15 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2025-03-09 06:33:25,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 125 flow [2025-03-09 06:33:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:33:25,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:33:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2025-03-09 06:33:25,982 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2025-03-09 06:33:25,982 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 66 flow. Second operand 7 states and 80 transitions. [2025-03-09 06:33:25,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 125 flow [2025-03-09 06:33:25,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 111 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:25,983 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 92 flow [2025-03-09 06:33:25,983 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} [2025-03-09 06:33:25,984 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2025-03-09 06:33:25,984 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 92 flow [2025-03-09 06:33:25,984 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) [2025-03-09 06:33:25,984 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:25,984 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:25,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:33:26,185 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 [2025-03-09 06:33:26,185 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:26,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:26,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2041417176, now seen corresponding path program 2 times [2025-03-09 06:33:26,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:26,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609419006] [2025-03-09 06:33:26,186 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:26,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:26,199 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:33:26,225 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 16 statements. [2025-03-09 06:33:26,227 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:26,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-09 06:33:27,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:27,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609419006] [2025-03-09 06:33:27,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609419006] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:27,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:27,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:33:27,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327055020] [2025-03-09 06:33:27,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:27,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:33:27,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:27,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:33:27,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:33:27,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 06:33:27,080 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) [2025-03-09 06:33:27,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:27,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 06:33:27,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:27,312 INFO L124 PetriNetUnfolderBase]: 43/128 cut-off events. [2025-03-09 06:33:27,312 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-03-09 06:33:27,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 128 events. 43/128 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 386 event pairs, 18 based on Foata normal form. 7/129 useless extension candidates. Maximal degree in co-relation 222. Up to 73 conditions per place. [2025-03-09 06:33:27,313 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 28 selfloop transitions, 5 changer transitions 6/44 dead transitions. [2025-03-09 06:33:27,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 200 flow [2025-03-09 06:33:27,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:33:27,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:33:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-03-09 06:33:27,314 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2025-03-09 06:33:27,314 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 92 flow. Second operand 6 states and 86 transitions. [2025-03-09 06:33:27,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 200 flow [2025-03-09 06:33:27,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:27,316 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 115 flow [2025-03-09 06:33:27,316 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=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2025-03-09 06:33:27,316 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2025-03-09 06:33:27,316 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 115 flow [2025-03-09 06:33:27,316 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) [2025-03-09 06:33:27,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:27,317 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:27,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:33:27,317 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:27,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash 2041692895, now seen corresponding path program 1 times [2025-03-09 06:33:27,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:27,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093030184] [2025-03-09 06:33:27,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:27,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:27,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:33:27,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:33:27,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:27,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:27,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:27,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093030184] [2025-03-09 06:33:27,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093030184] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:33:27,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254277477] [2025-03-09 06:33:27,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:27,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:27,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:27,449 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) [2025-03-09 06:33:27,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:33:27,485 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:33:27,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:33:27,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:27,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:27,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 06:33:27,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:33:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:27,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:33:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:27,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254277477] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:33:27,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:33:27,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-09 06:33:27,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457310660] [2025-03-09 06:33:27,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:33:27,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 06:33:27,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:27,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 06:33:27,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-09 06:33:27,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 06:33:27,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 115 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) [2025-03-09 06:33:27,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:27,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 06:33:27,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:27,788 INFO L124 PetriNetUnfolderBase]: 27/117 cut-off events. [2025-03-09 06:33:27,789 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2025-03-09 06:33:27,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 117 events. 27/117 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 326 event pairs, 26 based on Foata normal form. 4/115 useless extension candidates. Maximal degree in co-relation 253. Up to 69 conditions per place. [2025-03-09 06:33:27,791 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 16 selfloop transitions, 15 changer transitions 0/38 dead transitions. [2025-03-09 06:33:27,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 38 transitions, 225 flow [2025-03-09 06:33:27,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 06:33:27,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 06:33:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 154 transitions. [2025-03-09 06:33:27,792 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3802469135802469 [2025-03-09 06:33:27,793 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 115 flow. Second operand 15 states and 154 transitions. [2025-03-09 06:33:27,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 38 transitions, 225 flow [2025-03-09 06:33:27,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 38 transitions, 216 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-09 06:33:27,794 INFO L231 Difference]: Finished difference. Result has 57 places, 38 transitions, 203 flow [2025-03-09 06:33:27,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=203, PETRI_PLACES=57, PETRI_TRANSITIONS=38} [2025-03-09 06:33:27,795 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2025-03-09 06:33:27,795 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 38 transitions, 203 flow [2025-03-09 06:33:27,795 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) [2025-03-09 06:33:27,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:27,795 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:27,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 06:33:28,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:28,003 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:28,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:28,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1310840801, now seen corresponding path program 2 times [2025-03-09 06:33:28,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:28,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982319569] [2025-03-09 06:33:28,004 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:28,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:28,015 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-09 06:33:28,056 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 28 statements. [2025-03-09 06:33:28,056 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:28,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-09 06:33:28,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:28,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982319569] [2025-03-09 06:33:28,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982319569] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:28,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:28,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:33:28,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001179330] [2025-03-09 06:33:28,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:28,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:33:28,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:28,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:33:28,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:33:28,357 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 06:33:28,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 38 transitions, 203 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) [2025-03-09 06:33:28,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:28,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 06:33:28,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:28,495 INFO L124 PetriNetUnfolderBase]: 30/119 cut-off events. [2025-03-09 06:33:28,496 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2025-03-09 06:33:28,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 119 events. 30/119 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 320 event pairs, 8 based on Foata normal form. 14/133 useless extension candidates. Maximal degree in co-relation 208. Up to 51 conditions per place. [2025-03-09 06:33:28,496 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 38 selfloop transitions, 6 changer transitions 4/53 dead transitions. [2025-03-09 06:33:28,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 341 flow [2025-03-09 06:33:28,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:33:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:33:28,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2025-03-09 06:33:28,497 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2025-03-09 06:33:28,497 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 203 flow. Second operand 6 states and 87 transitions. [2025-03-09 06:33:28,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 341 flow [2025-03-09 06:33:28,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 331 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-09 06:33:28,502 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 233 flow [2025-03-09 06:33:28,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2025-03-09 06:33:28,502 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2025-03-09 06:33:28,502 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 233 flow [2025-03-09 06:33:28,503 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) [2025-03-09 06:33:28,503 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:28,504 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:28,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:33:28,504 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:28,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:28,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1935157546, now seen corresponding path program 1 times [2025-03-09 06:33:28,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:28,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869475773] [2025-03-09 06:33:28,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:28,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:28,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 06:33:28,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 06:33:28,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:28,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:28,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:28,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869475773] [2025-03-09 06:33:28,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869475773] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:33:28,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247744376] [2025-03-09 06:33:28,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:28,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:28,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:28,743 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) [2025-03-09 06:33:28,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:33:28,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 06:33:28,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 06:33:28,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:28,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:28,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 06:33:28,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:33:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:28,856 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:33:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:29,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247744376] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:33:29,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:33:29,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-03-09 06:33:29,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374942278] [2025-03-09 06:33:29,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:33:29,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 06:33:29,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:29,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 06:33:29,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-03-09 06:33:29,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 06:33:29,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 233 flow. Second operand has 23 states, 23 states have (on average 9.434782608695652) internal successors, (217), 23 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:29,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:29,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 06:33:29,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:29,205 INFO L124 PetriNetUnfolderBase]: 26/123 cut-off events. [2025-03-09 06:33:29,205 INFO L125 PetriNetUnfolderBase]: For 168/169 co-relation queries the response was YES. [2025-03-09 06:33:29,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 123 events. 26/123 cut-off events. For 168/169 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 296 event pairs, 22 based on Foata normal form. 3/126 useless extension candidates. Maximal degree in co-relation 336. Up to 68 conditions per place. [2025-03-09 06:33:29,207 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 19 selfloop transitions, 21 changer transitions 0/47 dead transitions. [2025-03-09 06:33:29,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 47 transitions, 367 flow [2025-03-09 06:33:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-09 06:33:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-09 06:33:29,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 207 transitions. [2025-03-09 06:33:29,209 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2025-03-09 06:33:29,209 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 233 flow. Second operand 21 states and 207 transitions. [2025-03-09 06:33:29,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 47 transitions, 367 flow [2025-03-09 06:33:29,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 47 transitions, 359 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:29,214 INFO L231 Difference]: Finished difference. Result has 82 places, 47 transitions, 336 flow [2025-03-09 06:33:29,214 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=336, PETRI_PLACES=82, PETRI_TRANSITIONS=47} [2025-03-09 06:33:29,215 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2025-03-09 06:33:29,216 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 47 transitions, 336 flow [2025-03-09 06:33:29,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.434782608695652) internal successors, (217), 23 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:29,216 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:29,217 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:29,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 06:33:29,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:29,417 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:29,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:29,418 INFO L85 PathProgramCache]: Analyzing trace with hash -531068683, now seen corresponding path program 2 times [2025-03-09 06:33:29,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:29,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99807857] [2025-03-09 06:33:29,418 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:29,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:29,426 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-09 06:33:29,477 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 42 statements. [2025-03-09 06:33:29,480 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:29,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:31,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:31,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99807857] [2025-03-09 06:33:31,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99807857] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:31,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:31,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:31,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248007645] [2025-03-09 06:33:31,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:31,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:31,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:31,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:31,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:31,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-09 06:33:31,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 47 transitions, 336 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) [2025-03-09 06:33:31,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:31,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-09 06:33:31,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:33,420 INFO L124 PetriNetUnfolderBase]: 58/184 cut-off events. [2025-03-09 06:33:33,421 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2025-03-09 06:33:33,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 184 events. 58/184 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 582 event pairs, 12 based on Foata normal form. 3/187 useless extension candidates. Maximal degree in co-relation 409. Up to 39 conditions per place. [2025-03-09 06:33:33,422 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 60 selfloop transitions, 19 changer transitions 6/86 dead transitions. [2025-03-09 06:33:33,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 86 transitions, 632 flow [2025-03-09 06:33:33,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:33:33,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:33:33,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 119 transitions. [2025-03-09 06:33:33,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33903133903133903 [2025-03-09 06:33:33,424 INFO L175 Difference]: Start difference. First operand has 82 places, 47 transitions, 336 flow. Second operand 13 states and 119 transitions. [2025-03-09 06:33:33,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 86 transitions, 632 flow [2025-03-09 06:33:33,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 589 flow, removed 1 selfloop flow, removed 13 redundant places. [2025-03-09 06:33:33,428 INFO L231 Difference]: Finished difference. Result has 86 places, 61 transitions, 416 flow [2025-03-09 06:33:33,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=416, PETRI_PLACES=86, PETRI_TRANSITIONS=61} [2025-03-09 06:33:33,428 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2025-03-09 06:33:33,428 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 61 transitions, 416 flow [2025-03-09 06:33:33,428 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) [2025-03-09 06:33:33,428 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:33,429 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:33,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:33:33,429 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:33,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:33,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1264980225, now seen corresponding path program 3 times [2025-03-09 06:33:33,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:33,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325495371] [2025-03-09 06:33:33,429 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:33:33,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:33,439 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 11 equivalence classes. [2025-03-09 06:33:33,474 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 12 of 42 statements. [2025-03-09 06:33:33,474 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:33:33,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:34,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:34,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325495371] [2025-03-09 06:33:34,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325495371] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:34,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:34,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:34,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69750571] [2025-03-09 06:33:34,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:34,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:34,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:34,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:34,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:34,830 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-09 06:33:34,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 61 transitions, 416 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) [2025-03-09 06:33:34,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:34,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-09 06:33:34,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:35,684 INFO L124 PetriNetUnfolderBase]: 64/207 cut-off events. [2025-03-09 06:33:35,684 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2025-03-09 06:33:35,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 207 events. 64/207 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 720 event pairs, 16 based on Foata normal form. 3/210 useless extension candidates. Maximal degree in co-relation 642. Up to 52 conditions per place. [2025-03-09 06:33:35,686 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 60 selfloop transitions, 28 changer transitions 7/96 dead transitions. [2025-03-09 06:33:35,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 96 transitions, 783 flow [2025-03-09 06:33:35,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-09 06:33:35,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-09 06:33:35,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 133 transitions. [2025-03-09 06:33:35,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.289760348583878 [2025-03-09 06:33:35,687 INFO L175 Difference]: Start difference. First operand has 86 places, 61 transitions, 416 flow. Second operand 17 states and 133 transitions. [2025-03-09 06:33:35,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 96 transitions, 783 flow [2025-03-09 06:33:35,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 752 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-09 06:33:35,691 INFO L231 Difference]: Finished difference. Result has 102 places, 72 transitions, 554 flow [2025-03-09 06:33:35,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=554, PETRI_PLACES=102, PETRI_TRANSITIONS=72} [2025-03-09 06:33:35,691 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2025-03-09 06:33:35,692 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 72 transitions, 554 flow [2025-03-09 06:33:35,692 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) [2025-03-09 06:33:35,692 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:35,692 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:35,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:33:35,692 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:35,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:35,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1441803114, now seen corresponding path program 1 times [2025-03-09 06:33:35,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:35,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504317628] [2025-03-09 06:33:35,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:35,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:35,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-09 06:33:35,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-09 06:33:35,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:35,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:37,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:37,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504317628] [2025-03-09 06:33:37,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504317628] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:37,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:37,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:37,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172021118] [2025-03-09 06:33:37,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:37,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:37,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:37,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:37,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:37,851 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-09 06:33:37,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 72 transitions, 554 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) [2025-03-09 06:33:37,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:37,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-09 06:33:37,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:38,671 INFO L124 PetriNetUnfolderBase]: 67/218 cut-off events. [2025-03-09 06:33:38,671 INFO L125 PetriNetUnfolderBase]: For 421/421 co-relation queries the response was YES. [2025-03-09 06:33:38,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 218 events. 67/218 cut-off events. For 421/421 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 786 event pairs, 28 based on Foata normal form. 3/221 useless extension candidates. Maximal degree in co-relation 721. Up to 106 conditions per place. [2025-03-09 06:33:38,673 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 65 selfloop transitions, 28 changer transitions 5/99 dead transitions. [2025-03-09 06:33:38,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 99 transitions, 882 flow [2025-03-09 06:33:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 06:33:38,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-09 06:33:38,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 126 transitions. [2025-03-09 06:33:38,675 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2916666666666667 [2025-03-09 06:33:38,675 INFO L175 Difference]: Start difference. First operand has 102 places, 72 transitions, 554 flow. Second operand 16 states and 126 transitions. [2025-03-09 06:33:38,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 99 transitions, 882 flow [2025-03-09 06:33:38,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 99 transitions, 833 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-03-09 06:33:38,682 INFO L231 Difference]: Finished difference. Result has 117 places, 81 transitions, 670 flow [2025-03-09 06:33:38,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=670, PETRI_PLACES=117, PETRI_TRANSITIONS=81} [2025-03-09 06:33:38,682 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2025-03-09 06:33:38,682 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 81 transitions, 670 flow [2025-03-09 06:33:38,682 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) [2025-03-09 06:33:38,682 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:38,683 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:38,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 06:33:38,683 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:38,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:38,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1433759544, now seen corresponding path program 2 times [2025-03-09 06:33:38,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:38,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194276827] [2025-03-09 06:33:38,683 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:38,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:38,692 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-09 06:33:38,706 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 42 statements. [2025-03-09 06:33:38,706 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:38,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:42,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:42,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194276827] [2025-03-09 06:33:42,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194276827] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:42,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:42,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:42,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288596693] [2025-03-09 06:33:42,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:42,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:42,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:42,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:42,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:42,505 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-09 06:33:42,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 81 transitions, 670 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) [2025-03-09 06:33:42,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:42,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-09 06:33:42,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:43,385 INFO L124 PetriNetUnfolderBase]: 70/230 cut-off events. [2025-03-09 06:33:43,385 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2025-03-09 06:33:43,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 903 conditions, 230 events. 70/230 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 879 event pairs, 32 based on Foata normal form. 3/233 useless extension candidates. Maximal degree in co-relation 808. Up to 113 conditions per place. [2025-03-09 06:33:43,387 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 62 selfloop transitions, 34 changer transitions 2/99 dead transitions. [2025-03-09 06:33:43,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 99 transitions, 946 flow [2025-03-09 06:33:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 06:33:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 06:33:43,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 124 transitions. [2025-03-09 06:33:43,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30617283950617286 [2025-03-09 06:33:43,389 INFO L175 Difference]: Start difference. First operand has 117 places, 81 transitions, 670 flow. Second operand 15 states and 124 transitions. [2025-03-09 06:33:43,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 99 transitions, 946 flow [2025-03-09 06:33:43,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 99 transitions, 917 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-03-09 06:33:43,396 INFO L231 Difference]: Finished difference. Result has 130 places, 86 transitions, 775 flow [2025-03-09 06:33:43,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=775, PETRI_PLACES=130, PETRI_TRANSITIONS=86} [2025-03-09 06:33:43,398 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2025-03-09 06:33:43,398 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 86 transitions, 775 flow [2025-03-09 06:33:43,398 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) [2025-03-09 06:33:43,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:43,398 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:43,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:33:43,399 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:43,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:43,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1442149074, now seen corresponding path program 3 times [2025-03-09 06:33:43,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:43,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214728770] [2025-03-09 06:33:43,400 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:33:43,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:43,409 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 11 equivalence classes. [2025-03-09 06:33:43,421 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 12 of 42 statements. [2025-03-09 06:33:43,422 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:33:43,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:46,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:46,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214728770] [2025-03-09 06:33:46,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214728770] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:46,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:46,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:46,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68323352] [2025-03-09 06:33:46,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:46,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:46,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:46,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:46,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:46,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-09 06:33:46,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 86 transitions, 775 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) [2025-03-09 06:33:46,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:46,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-09 06:33:46,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:47,603 INFO L124 PetriNetUnfolderBase]: 75/247 cut-off events. [2025-03-09 06:33:47,603 INFO L125 PetriNetUnfolderBase]: For 654/654 co-relation queries the response was YES. [2025-03-09 06:33:47,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 247 events. 75/247 cut-off events. For 654/654 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1018 event pairs, 27 based on Foata normal form. 3/250 useless extension candidates. Maximal degree in co-relation 949. Up to 110 conditions per place. [2025-03-09 06:33:47,609 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 72 selfloop transitions, 37 changer transitions 2/112 dead transitions. [2025-03-09 06:33:47,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 112 transitions, 1132 flow [2025-03-09 06:33:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 06:33:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 06:33:47,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 124 transitions. [2025-03-09 06:33:47,615 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30617283950617286 [2025-03-09 06:33:47,615 INFO L175 Difference]: Start difference. First operand has 130 places, 86 transitions, 775 flow. Second operand 15 states and 124 transitions. [2025-03-09 06:33:47,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 112 transitions, 1132 flow [2025-03-09 06:33:47,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 112 transitions, 1088 flow, removed 4 selfloop flow, removed 7 redundant places. [2025-03-09 06:33:47,621 INFO L231 Difference]: Finished difference. Result has 141 places, 94 transitions, 892 flow [2025-03-09 06:33:47,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=892, PETRI_PLACES=141, PETRI_TRANSITIONS=94} [2025-03-09 06:33:47,622 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 112 predicate places. [2025-03-09 06:33:47,623 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 94 transitions, 892 flow [2025-03-09 06:33:47,623 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) [2025-03-09 06:33:47,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:47,623 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:47,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-09 06:33:47,623 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:47,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:47,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1341912538, now seen corresponding path program 4 times [2025-03-09 06:33:47,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:47,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826690099] [2025-03-09 06:33:47,625 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:33:47,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:47,634 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-03-09 06:33:47,677 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-09 06:33:47,677 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:33:47,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:50,219 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:50,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:50,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826690099] [2025-03-09 06:33:50,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826690099] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:50,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:50,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:50,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861783287] [2025-03-09 06:33:50,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:50,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:50,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:50,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:50,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:50,228 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 06:33:50,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 94 transitions, 892 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:50,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:50,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 06:33:50,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:51,006 INFO L124 PetriNetUnfolderBase]: 74/253 cut-off events. [2025-03-09 06:33:51,006 INFO L125 PetriNetUnfolderBase]: For 803/803 co-relation queries the response was YES. [2025-03-09 06:33:51,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 253 events. 74/253 cut-off events. For 803/803 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1072 event pairs, 35 based on Foata normal form. 3/256 useless extension candidates. Maximal degree in co-relation 1033. Up to 117 conditions per place. [2025-03-09 06:33:51,008 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 71 selfloop transitions, 38 changer transitions 2/113 dead transitions. [2025-03-09 06:33:51,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 113 transitions, 1245 flow [2025-03-09 06:33:51,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 06:33:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-09 06:33:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 130 transitions. [2025-03-09 06:33:51,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3439153439153439 [2025-03-09 06:33:51,009 INFO L175 Difference]: Start difference. First operand has 141 places, 94 transitions, 892 flow. Second operand 14 states and 130 transitions. [2025-03-09 06:33:51,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 113 transitions, 1245 flow [2025-03-09 06:33:51,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 113 transitions, 1180 flow, removed 8 selfloop flow, removed 8 redundant places. [2025-03-09 06:33:51,015 INFO L231 Difference]: Finished difference. Result has 151 places, 100 transitions, 1010 flow [2025-03-09 06:33:51,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1010, PETRI_PLACES=151, PETRI_TRANSITIONS=100} [2025-03-09 06:33:51,016 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 122 predicate places. [2025-03-09 06:33:51,016 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 100 transitions, 1010 flow [2025-03-09 06:33:51,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:51,016 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:51,016 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:51,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 06:33:51,016 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:51,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:51,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1249267875, now seen corresponding path program 4 times [2025-03-09 06:33:51,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:51,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060335570] [2025-03-09 06:33:51,017 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:33:51,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:51,024 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-03-09 06:33:51,047 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-09 06:33:51,048 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:33:51,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:51,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:51,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060335570] [2025-03-09 06:33:51,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060335570] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:51,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:51,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:33:51,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769040152] [2025-03-09 06:33:51,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:51,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:33:51,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:51,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:33:51,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:33:51,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 06:33:51,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 100 transitions, 1010 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:51,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:51,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 06:33:51,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:52,082 INFO L124 PetriNetUnfolderBase]: 52/247 cut-off events. [2025-03-09 06:33:52,082 INFO L125 PetriNetUnfolderBase]: For 1031/1031 co-relation queries the response was YES. [2025-03-09 06:33:52,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 247 events. 52/247 cut-off events. For 1031/1031 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1233 event pairs, 13 based on Foata normal form. 9/256 useless extension candidates. Maximal degree in co-relation 1032. Up to 79 conditions per place. [2025-03-09 06:33:52,084 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 61 selfloop transitions, 30 changer transitions 11/122 dead transitions. [2025-03-09 06:33:52,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 122 transitions, 1325 flow [2025-03-09 06:33:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 06:33:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-09 06:33:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 182 transitions. [2025-03-09 06:33:52,085 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4212962962962963 [2025-03-09 06:33:52,085 INFO L175 Difference]: Start difference. First operand has 151 places, 100 transitions, 1010 flow. Second operand 16 states and 182 transitions. [2025-03-09 06:33:52,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 122 transitions, 1325 flow [2025-03-09 06:33:52,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 122 transitions, 1293 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-03-09 06:33:52,093 INFO L231 Difference]: Finished difference. Result has 167 places, 102 transitions, 1065 flow [2025-03-09 06:33:52,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1065, PETRI_PLACES=167, PETRI_TRANSITIONS=102} [2025-03-09 06:33:52,094 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2025-03-09 06:33:52,094 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 102 transitions, 1065 flow [2025-03-09 06:33:52,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:52,095 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:52,095 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:52,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-09 06:33:52,095 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:52,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1757354364, now seen corresponding path program 1 times [2025-03-09 06:33:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:52,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811101273] [2025-03-09 06:33:52,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:52,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-09 06:33:52,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 06:33:52,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:52,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:54,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:54,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811101273] [2025-03-09 06:33:54,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811101273] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:54,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:54,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:54,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563071497] [2025-03-09 06:33:54,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:54,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:54,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:54,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:54,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:54,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 06:33:54,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 102 transitions, 1065 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:54,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:54,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 06:33:54,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:54,624 INFO L124 PetriNetUnfolderBase]: 64/243 cut-off events. [2025-03-09 06:33:54,624 INFO L125 PetriNetUnfolderBase]: For 1108/1108 co-relation queries the response was YES. [2025-03-09 06:33:54,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 243 events. 64/243 cut-off events. For 1108/1108 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1063 event pairs, 22 based on Foata normal form. 2/245 useless extension candidates. Maximal degree in co-relation 1090. Up to 79 conditions per place. [2025-03-09 06:33:54,626 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 62 selfloop transitions, 34 changer transitions 4/112 dead transitions. [2025-03-09 06:33:54,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 112 transitions, 1315 flow [2025-03-09 06:33:54,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:33:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:33:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 103 transitions. [2025-03-09 06:33:54,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31790123456790126 [2025-03-09 06:33:54,628 INFO L175 Difference]: Start difference. First operand has 167 places, 102 transitions, 1065 flow. Second operand 12 states and 103 transitions. [2025-03-09 06:33:54,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 112 transitions, 1315 flow [2025-03-09 06:33:54,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 112 transitions, 1233 flow, removed 9 selfloop flow, removed 17 redundant places. [2025-03-09 06:33:54,635 INFO L231 Difference]: Finished difference. Result has 156 places, 101 transitions, 1043 flow [2025-03-09 06:33:54,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1043, PETRI_PLACES=156, PETRI_TRANSITIONS=101} [2025-03-09 06:33:54,636 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 127 predicate places. [2025-03-09 06:33:54,636 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 101 transitions, 1043 flow [2025-03-09 06:33:54,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:54,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:54,637 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:54,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-09 06:33:54,637 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:54,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:54,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1756948588, now seen corresponding path program 1 times [2025-03-09 06:33:54,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:54,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51791383] [2025-03-09 06:33:54,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:54,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:54,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-09 06:33:54,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 06:33:54,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:54,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:56,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:56,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51791383] [2025-03-09 06:33:56,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51791383] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:56,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:56,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:56,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684094111] [2025-03-09 06:33:56,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:56,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:56,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:56,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:56,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:56,724 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-03-09 06:33:56,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 101 transitions, 1043 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) [2025-03-09 06:33:56,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:56,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-03-09 06:33:56,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:57,425 INFO L124 PetriNetUnfolderBase]: 53/224 cut-off events. [2025-03-09 06:33:57,425 INFO L125 PetriNetUnfolderBase]: For 926/926 co-relation queries the response was YES. [2025-03-09 06:33:57,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 224 events. 53/224 cut-off events. For 926/926 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1009 event pairs, 22 based on Foata normal form. 3/224 useless extension candidates. Maximal degree in co-relation 983. Up to 111 conditions per place. [2025-03-09 06:33:57,427 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 56 selfloop transitions, 33 changer transitions 7/113 dead transitions. [2025-03-09 06:33:57,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 113 transitions, 1278 flow [2025-03-09 06:33:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:33:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:33:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2025-03-09 06:33:57,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3646723646723647 [2025-03-09 06:33:57,429 INFO L175 Difference]: Start difference. First operand has 156 places, 101 transitions, 1043 flow. Second operand 13 states and 128 transitions. [2025-03-09 06:33:57,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 113 transitions, 1278 flow [2025-03-09 06:33:57,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 113 transitions, 1215 flow, removed 2 selfloop flow, removed 8 redundant places. [2025-03-09 06:33:57,435 INFO L231 Difference]: Finished difference. Result has 160 places, 97 transitions, 1016 flow [2025-03-09 06:33:57,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1016, PETRI_PLACES=160, PETRI_TRANSITIONS=97} [2025-03-09 06:33:57,436 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 131 predicate places. [2025-03-09 06:33:57,436 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 97 transitions, 1016 flow [2025-03-09 06:33:57,436 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) [2025-03-09 06:33:57,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:57,436 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:57,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-09 06:33:57,436 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:33:57,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:57,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1746223828, now seen corresponding path program 2 times [2025-03-09 06:33:57,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:57,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995945072] [2025-03-09 06:33:57,437 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:57,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:57,445 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-03-09 06:33:57,455 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 43 statements. [2025-03-09 06:33:57,455 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:57,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:59,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:59,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995945072] [2025-03-09 06:33:59,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995945072] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:59,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:59,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:59,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588261251] [2025-03-09 06:33:59,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:59,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:59,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:59,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:59,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:59,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-03-09 06:33:59,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 97 transitions, 1016 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) [2025-03-09 06:33:59,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:59,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-03-09 06:33:59,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:01,118 INFO L124 PetriNetUnfolderBase]: 51/225 cut-off events. [2025-03-09 06:34:01,118 INFO L125 PetriNetUnfolderBase]: For 1081/1081 co-relation queries the response was YES. [2025-03-09 06:34:01,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 225 events. 51/225 cut-off events. For 1081/1081 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 995 event pairs, 25 based on Foata normal form. 6/231 useless extension candidates. Maximal degree in co-relation 1042. Up to 109 conditions per place. [2025-03-09 06:34:01,120 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 50 selfloop transitions, 30 changer transitions 13/108 dead transitions. [2025-03-09 06:34:01,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 108 transitions, 1261 flow [2025-03-09 06:34:01,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:34:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:34:01,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2025-03-09 06:34:01,121 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3561253561253561 [2025-03-09 06:34:01,121 INFO L175 Difference]: Start difference. First operand has 160 places, 97 transitions, 1016 flow. Second operand 13 states and 125 transitions. [2025-03-09 06:34:01,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 108 transitions, 1261 flow [2025-03-09 06:34:01,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 108 transitions, 1159 flow, removed 2 selfloop flow, removed 15 redundant places. [2025-03-09 06:34:01,127 INFO L231 Difference]: Finished difference. Result has 155 places, 91 transitions, 918 flow [2025-03-09 06:34:01,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=918, PETRI_PLACES=155, PETRI_TRANSITIONS=91} [2025-03-09 06:34:01,128 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2025-03-09 06:34:01,128 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 91 transitions, 918 flow [2025-03-09 06:34:01,128 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) [2025-03-09 06:34:01,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:01,128 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:01,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-09 06:34:01,128 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:34:01,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:01,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1886047726, now seen corresponding path program 1 times [2025-03-09 06:34:01,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:01,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862540075] [2025-03-09 06:34:01,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:34:01,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:01,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-09 06:34:01,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 06:34:01,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:34:01,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:02,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:02,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862540075] [2025-03-09 06:34:02,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862540075] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:02,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:02,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:34:02,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631764094] [2025-03-09 06:34:02,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:02,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 06:34:02,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:02,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 06:34:02,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:34:02,448 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-03-09 06:34:02,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 91 transitions, 918 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) [2025-03-09 06:34:02,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:02,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-03-09 06:34:02,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:03,252 INFO L124 PetriNetUnfolderBase]: 46/217 cut-off events. [2025-03-09 06:34:03,252 INFO L125 PetriNetUnfolderBase]: For 940/940 co-relation queries the response was YES. [2025-03-09 06:34:03,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 217 events. 46/217 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 960 event pairs, 21 based on Foata normal form. 8/225 useless extension candidates. Maximal degree in co-relation 956. Up to 91 conditions per place. [2025-03-09 06:34:03,255 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 54 selfloop transitions, 17 changer transitions 20/104 dead transitions. [2025-03-09 06:34:03,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 104 transitions, 1178 flow [2025-03-09 06:34:03,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 06:34:03,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 06:34:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2025-03-09 06:34:03,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39094650205761317 [2025-03-09 06:34:03,256 INFO L175 Difference]: Start difference. First operand has 155 places, 91 transitions, 918 flow. Second operand 9 states and 95 transitions. [2025-03-09 06:34:03,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 104 transitions, 1178 flow [2025-03-09 06:34:03,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 104 transitions, 1062 flow, removed 3 selfloop flow, removed 15 redundant places. [2025-03-09 06:34:03,262 INFO L231 Difference]: Finished difference. Result has 144 places, 80 transitions, 733 flow [2025-03-09 06:34:03,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=733, PETRI_PLACES=144, PETRI_TRANSITIONS=80} [2025-03-09 06:34:03,263 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 115 predicate places. [2025-03-09 06:34:03,263 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 80 transitions, 733 flow [2025-03-09 06:34:03,263 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) [2025-03-09 06:34:03,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:03,263 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:03,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 06:34:03,263 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:34:03,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:03,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1079155786, now seen corresponding path program 3 times [2025-03-09 06:34:03,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:03,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374665447] [2025-03-09 06:34:03,265 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:34:03,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:03,272 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 43 statements into 11 equivalence classes. [2025-03-09 06:34:03,283 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 43 statements. [2025-03-09 06:34:03,283 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:34:03,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:05,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:05,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374665447] [2025-03-09 06:34:05,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374665447] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:05,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:05,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:34:05,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898606268] [2025-03-09 06:34:05,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:05,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:34:05,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:05,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:34:05,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:34:05,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-03-09 06:34:05,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 80 transitions, 733 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) [2025-03-09 06:34:05,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:05,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-03-09 06:34:05,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:06,758 INFO L124 PetriNetUnfolderBase]: 34/166 cut-off events. [2025-03-09 06:34:06,758 INFO L125 PetriNetUnfolderBase]: For 591/591 co-relation queries the response was YES. [2025-03-09 06:34:06,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 166 events. 34/166 cut-off events. For 591/591 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 580 event pairs, 18 based on Foata normal form. 3/169 useless extension candidates. Maximal degree in co-relation 700. Up to 80 conditions per place. [2025-03-09 06:34:06,759 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 46 selfloop transitions, 18 changer transitions 14/88 dead transitions. [2025-03-09 06:34:06,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 88 transitions, 904 flow [2025-03-09 06:34:06,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:34:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:34:06,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 121 transitions. [2025-03-09 06:34:06,761 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34472934472934474 [2025-03-09 06:34:06,761 INFO L175 Difference]: Start difference. First operand has 144 places, 80 transitions, 733 flow. Second operand 13 states and 121 transitions. [2025-03-09 06:34:06,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 88 transitions, 904 flow [2025-03-09 06:34:06,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 88 transitions, 845 flow, removed 4 selfloop flow, removed 11 redundant places. [2025-03-09 06:34:06,765 INFO L231 Difference]: Finished difference. Result has 140 places, 71 transitions, 624 flow [2025-03-09 06:34:06,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=624, PETRI_PLACES=140, PETRI_TRANSITIONS=71} [2025-03-09 06:34:06,765 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2025-03-09 06:34:06,765 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 71 transitions, 624 flow [2025-03-09 06:34:06,766 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) [2025-03-09 06:34:06,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:06,766 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:06,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-09 06:34:06,766 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:34:06,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:06,766 INFO L85 PathProgramCache]: Analyzing trace with hash 66103307, now seen corresponding path program 1 times [2025-03-09 06:34:06,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:06,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351666993] [2025-03-09 06:34:06,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:34:06,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:06,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-09 06:34:06,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 06:34:06,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:34:06,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:07,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:07,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351666993] [2025-03-09 06:34:07,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351666993] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:07,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:07,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:34:07,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472997534] [2025-03-09 06:34:07,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:07,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:34:07,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:07,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:34:07,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:34:07,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 06:34:07,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 71 transitions, 624 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) [2025-03-09 06:34:07,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:07,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 06:34:07,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:08,111 INFO L124 PetriNetUnfolderBase]: 32/148 cut-off events. [2025-03-09 06:34:08,111 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2025-03-09 06:34:08,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 148 events. 32/148 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 451 event pairs, 8 based on Foata normal form. 2/150 useless extension candidates. Maximal degree in co-relation 608. Up to 47 conditions per place. [2025-03-09 06:34:08,112 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 51 selfloop transitions, 26 changer transitions 0/82 dead transitions. [2025-03-09 06:34:08,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 82 transitions, 820 flow [2025-03-09 06:34:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:34:08,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:34:08,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 108 transitions. [2025-03-09 06:34:08,113 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3076923076923077 [2025-03-09 06:34:08,113 INFO L175 Difference]: Start difference. First operand has 140 places, 71 transitions, 624 flow. Second operand 13 states and 108 transitions. [2025-03-09 06:34:08,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 82 transitions, 820 flow [2025-03-09 06:34:08,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 82 transitions, 727 flow, removed 3 selfloop flow, removed 18 redundant places. [2025-03-09 06:34:08,116 INFO L231 Difference]: Finished difference. Result has 123 places, 75 transitions, 600 flow [2025-03-09 06:34:08,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=600, PETRI_PLACES=123, PETRI_TRANSITIONS=75} [2025-03-09 06:34:08,116 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2025-03-09 06:34:08,116 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 75 transitions, 600 flow [2025-03-09 06:34:08,116 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) [2025-03-09 06:34:08,116 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:08,117 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:08,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-09 06:34:08,117 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:34:08,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:08,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1350384536, now seen corresponding path program 4 times [2025-03-09 06:34:08,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:08,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910445944] [2025-03-09 06:34:08,117 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:34:08,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:08,123 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-03-09 06:34:08,140 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 06:34:08,140 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:34:08,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:09,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:09,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910445944] [2025-03-09 06:34:09,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910445944] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:09,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:09,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:34:09,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475674380] [2025-03-09 06:34:09,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:09,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:34:09,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:09,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:34:09,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:34:09,691 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 06:34:09,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 75 transitions, 600 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:09,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:09,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 06:34:09,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:10,350 INFO L124 PetriNetUnfolderBase]: 23/133 cut-off events. [2025-03-09 06:34:10,350 INFO L125 PetriNetUnfolderBase]: For 297/297 co-relation queries the response was YES. [2025-03-09 06:34:10,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 133 events. 23/133 cut-off events. For 297/297 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 394 event pairs, 9 based on Foata normal form. 3/136 useless extension candidates. Maximal degree in co-relation 485. Up to 52 conditions per place. [2025-03-09 06:34:10,351 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 45 selfloop transitions, 14 changer transitions 13/80 dead transitions. [2025-03-09 06:34:10,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 80 transitions, 752 flow [2025-03-09 06:34:10,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:34:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:34:10,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2025-03-09 06:34:10,352 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41358024691358025 [2025-03-09 06:34:10,352 INFO L175 Difference]: Start difference. First operand has 123 places, 75 transitions, 600 flow. Second operand 12 states and 134 transitions. [2025-03-09 06:34:10,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 80 transitions, 752 flow [2025-03-09 06:34:10,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 80 transitions, 701 flow, removed 5 selfloop flow, removed 8 redundant places. [2025-03-09 06:34:10,355 INFO L231 Difference]: Finished difference. Result has 127 places, 66 transitions, 509 flow [2025-03-09 06:34:10,355 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=509, PETRI_PLACES=127, PETRI_TRANSITIONS=66} [2025-03-09 06:34:10,356 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2025-03-09 06:34:10,356 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 66 transitions, 509 flow [2025-03-09 06:34:10,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:10,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:10,356 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:10,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-09 06:34:10,356 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:34:10,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:10,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1934419758, now seen corresponding path program 2 times [2025-03-09 06:34:10,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:10,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257638387] [2025-03-09 06:34:10,357 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:34:10,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:10,363 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-03-09 06:34:10,374 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 43 statements. [2025-03-09 06:34:10,374 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:34:10,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:11,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:11,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257638387] [2025-03-09 06:34:11,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257638387] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:11,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:11,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:34:11,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010177354] [2025-03-09 06:34:11,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:11,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:34:11,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:11,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:34:11,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:34:11,812 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-03-09 06:34:11,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 66 transitions, 509 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) [2025-03-09 06:34:11,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:11,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-03-09 06:34:11,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:12,613 INFO L124 PetriNetUnfolderBase]: 22/119 cut-off events. [2025-03-09 06:34:12,613 INFO L125 PetriNetUnfolderBase]: For 259/259 co-relation queries the response was YES. [2025-03-09 06:34:12,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 119 events. 22/119 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 291 event pairs, 5 based on Foata normal form. 3/122 useless extension candidates. Maximal degree in co-relation 474. Up to 49 conditions per place. [2025-03-09 06:34:12,614 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 47 selfloop transitions, 11 changer transitions 10/75 dead transitions. [2025-03-09 06:34:12,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 75 transitions, 679 flow [2025-03-09 06:34:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 06:34:12,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 06:34:12,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2025-03-09 06:34:12,615 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2025-03-09 06:34:12,615 INFO L175 Difference]: Start difference. First operand has 127 places, 66 transitions, 509 flow. Second operand 11 states and 103 transitions. [2025-03-09 06:34:12,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 75 transitions, 679 flow [2025-03-09 06:34:12,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 75 transitions, 623 flow, removed 4 selfloop flow, removed 15 redundant places. [2025-03-09 06:34:12,620 INFO L231 Difference]: Finished difference. Result has 114 places, 62 transitions, 448 flow [2025-03-09 06:34:12,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=448, PETRI_PLACES=114, PETRI_TRANSITIONS=62} [2025-03-09 06:34:12,621 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2025-03-09 06:34:12,621 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 62 transitions, 448 flow [2025-03-09 06:34:12,621 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) [2025-03-09 06:34:12,622 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:12,622 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:12,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-09 06:34:12,622 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:34:12,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:12,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1356589310, now seen corresponding path program 1 times [2025-03-09 06:34:12,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:12,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655322662] [2025-03-09 06:34:12,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:34:12,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:12,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-09 06:34:12,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:34:12,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:34:12,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:14,647 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:14,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:14,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655322662] [2025-03-09 06:34:14,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655322662] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:14,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:14,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:34:14,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827118843] [2025-03-09 06:34:14,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:14,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:34:14,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:14,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:34:14,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:34:14,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-03-09 06:34:14,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 62 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:14,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:14,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-03-09 06:34:14,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:15,061 INFO L124 PetriNetUnfolderBase]: 18/103 cut-off events. [2025-03-09 06:34:15,061 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2025-03-09 06:34:15,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 103 events. 18/103 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 199 event pairs, 3 based on Foata normal form. 2/105 useless extension candidates. Maximal degree in co-relation 389. Up to 31 conditions per place. [2025-03-09 06:34:15,062 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 38 selfloop transitions, 8 changer transitions 14/65 dead transitions. [2025-03-09 06:34:15,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 65 transitions, 568 flow [2025-03-09 06:34:15,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:34:15,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:34:15,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2025-03-09 06:34:15,063 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2025-03-09 06:34:15,063 INFO L175 Difference]: Start difference. First operand has 114 places, 62 transitions, 448 flow. Second operand 10 states and 90 transitions. [2025-03-09 06:34:15,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 65 transitions, 568 flow [2025-03-09 06:34:15,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 65 transitions, 524 flow, removed 3 selfloop flow, removed 13 redundant places. [2025-03-09 06:34:15,065 INFO L231 Difference]: Finished difference. Result has 104 places, 51 transitions, 364 flow [2025-03-09 06:34:15,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=364, PETRI_PLACES=104, PETRI_TRANSITIONS=51} [2025-03-09 06:34:15,065 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2025-03-09 06:34:15,065 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 51 transitions, 364 flow [2025-03-09 06:34:15,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:15,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:15,065 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:15,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-09 06:34:15,065 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:34:15,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:15,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1374753338, now seen corresponding path program 1 times [2025-03-09 06:34:15,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:15,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887458449] [2025-03-09 06:34:15,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:34:15,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:15,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-09 06:34:15,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:34:15,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:34:15,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:16,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:16,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887458449] [2025-03-09 06:34:16,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887458449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:16,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:16,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 06:34:16,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501862260] [2025-03-09 06:34:16,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:16,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:34:16,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:16,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:34:16,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:34:16,971 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-03-09 06:34:16,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 51 transitions, 364 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:16,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:16,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-03-09 06:34:16,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:17,440 INFO L124 PetriNetUnfolderBase]: 9/72 cut-off events. [2025-03-09 06:34:17,440 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2025-03-09 06:34:17,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 72 events. 9/72 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 1 based on Foata normal form. 2/74 useless extension candidates. Maximal degree in co-relation 282. Up to 26 conditions per place. [2025-03-09 06:34:17,440 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 37 selfloop transitions, 3 changer transitions 13/56 dead transitions. [2025-03-09 06:34:17,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 56 transitions, 489 flow [2025-03-09 06:34:17,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 06:34:17,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 06:34:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 80 transitions. [2025-03-09 06:34:17,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3292181069958848 [2025-03-09 06:34:17,441 INFO L175 Difference]: Start difference. First operand has 104 places, 51 transitions, 364 flow. Second operand 9 states and 80 transitions. [2025-03-09 06:34:17,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 56 transitions, 489 flow [2025-03-09 06:34:17,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 56 transitions, 445 flow, removed 4 selfloop flow, removed 11 redundant places. [2025-03-09 06:34:17,443 INFO L231 Difference]: Finished difference. Result has 86 places, 43 transitions, 298 flow [2025-03-09 06:34:17,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=86, PETRI_TRANSITIONS=43} [2025-03-09 06:34:17,443 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2025-03-09 06:34:17,443 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 43 transitions, 298 flow [2025-03-09 06:34:17,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:17,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:17,443 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:17,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-09 06:34:17,443 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:34:17,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:17,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2049202794, now seen corresponding path program 2 times [2025-03-09 06:34:17,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:17,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586209370] [2025-03-09 06:34:17,444 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:34:17,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:17,451 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:34:17,468 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:34:17,468 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:34:17,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:18,622 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:18,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:18,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586209370] [2025-03-09 06:34:18,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586209370] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:34:18,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348413532] [2025-03-09 06:34:18,623 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:34:18,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:34:18,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:34:18,625 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) [2025-03-09 06:34:18,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:34:18,683 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:34:18,784 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:34:18,784 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:34:18,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:18,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 73 conjuncts are in the unsatisfiable core [2025-03-09 06:34:18,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:34:20,247 INFO L349 Elim1Store]: treesize reduction 257, result has 30.7 percent of original size [2025-03-09 06:34:20,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 65 case distinctions, treesize of input 107 treesize of output 155 [2025-03-09 06:34:21,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:34:21,880 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 485 treesize of output 303 [2025-03-09 06:34:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 11 proven. 145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:34:24,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:34:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:43,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348413532] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:34:43,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:34:43,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 24, 6] total 34 [2025-03-09 06:34:43,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132676194] [2025-03-09 06:34:43,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:34:43,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-09 06:34:43,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:43,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-09 06:34:43,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2025-03-09 06:34:44,260 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-09 06:34:44,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 43 transitions, 298 flow. Second operand has 36 states, 36 states have (on average 5.472222222222222) internal successors, (197), 36 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:44,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:44,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-09 06:34:44,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:46,459 INFO L124 PetriNetUnfolderBase]: 5/54 cut-off events. [2025-03-09 06:34:46,459 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2025-03-09 06:34:46,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 54 events. 5/54 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 2/56 useless extension candidates. Maximal degree in co-relation 209. Up to 11 conditions per place. [2025-03-09 06:34:46,459 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2025-03-09 06:34:46,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 43 transitions, 376 flow [2025-03-09 06:34:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-09 06:34:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-03-09 06:34:46,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 156 transitions. [2025-03-09 06:34:46,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.19923371647509577 [2025-03-09 06:34:46,460 INFO L175 Difference]: Start difference. First operand has 86 places, 43 transitions, 298 flow. Second operand 29 states and 156 transitions. [2025-03-09 06:34:46,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 43 transitions, 376 flow [2025-03-09 06:34:46,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 43 transitions, 352 flow, removed 4 selfloop flow, removed 10 redundant places. [2025-03-09 06:34:46,461 INFO L231 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2025-03-09 06:34:46,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2025-03-09 06:34:46,462 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2025-03-09 06:34:46,462 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2025-03-09 06:34:46,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.472222222222222) internal successors, (197), 36 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:46,464 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2025-03-09 06:34:46,464 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2025-03-09 06:34:46,464 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2025-03-09 06:34:46,464 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2025-03-09 06:34:46,464 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2025-03-09 06:34:46,464 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2025-03-09 06:34:46,464 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2025-03-09 06:34:46,464 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2025-03-09 06:34:46,464 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2025-03-09 06:34:46,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 06:34:46,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-09 06:34:46,665 INFO L422 BasicCegarLoop]: Path program histogram: [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:46,669 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 06:34:46,669 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 06:34:46,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 06:34:46 BasicIcfg [2025-03-09 06:34:46,672 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 06:34:46,673 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 06:34:46,673 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 06:34:46,673 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 06:34:46,674 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:33:24" (3/4) ... [2025-03-09 06:34:46,675 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 06:34:46,677 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-03-09 06:34:46,680 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 51 nodes and edges [2025-03-09 06:34:46,680 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2025-03-09 06:34:46,680 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-03-09 06:34:46,680 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-09 06:34:46,680 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-09 06:34:46,681 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-09 06:34:46,681 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-09 06:34:46,742 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 06:34:46,743 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 06:34:46,743 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 06:34:46,743 INFO L158 Benchmark]: Toolchain (without parser) took 83447.47ms. Allocated memory was 142.6MB in the beginning and 729.8MB in the end (delta: 587.2MB). Free memory was 105.6MB in the beginning and 527.8MB in the end (delta: -422.2MB). Peak memory consumption was 165.2MB. Max. memory is 16.1GB. [2025-03-09 06:34:46,744 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:34:46,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 412.08ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 75.7MB in the end (delta: 29.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-09 06:34:46,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.65ms. Allocated memory is still 142.6MB. Free memory was 75.7MB in the beginning and 73.4MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:34:46,745 INFO L158 Benchmark]: Boogie Preprocessor took 30.70ms. Allocated memory is still 142.6MB. Free memory was 73.4MB in the beginning and 71.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:34:46,746 INFO L158 Benchmark]: IcfgBuilder took 603.05ms. Allocated memory is still 142.6MB. Free memory was 71.9MB in the beginning and 47.0MB in the end (delta: 24.9MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2025-03-09 06:34:46,746 INFO L158 Benchmark]: TraceAbstraction took 82296.45ms. Allocated memory was 142.6MB in the beginning and 729.8MB in the end (delta: 587.2MB). Free memory was 46.3MB in the beginning and 533.3MB in the end (delta: -486.9MB). Peak memory consumption was 100.7MB. Max. memory is 16.1GB. [2025-03-09 06:34:46,746 INFO L158 Benchmark]: Witness Printer took 69.72ms. Allocated memory is still 729.8MB. Free memory was 533.3MB in the beginning and 527.8MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:34:46,748 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 412.08ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 75.7MB in the end (delta: 29.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.65ms. Allocated memory is still 142.6MB. Free memory was 75.7MB in the beginning and 73.4MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.70ms. Allocated memory is still 142.6MB. Free memory was 73.4MB in the beginning and 71.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 603.05ms. Allocated memory is still 142.6MB. Free memory was 71.9MB in the beginning and 47.0MB in the end (delta: 24.9MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. * TraceAbstraction took 82296.45ms. Allocated memory was 142.6MB in the beginning and 729.8MB in the end (delta: 587.2MB). Free memory was 46.3MB in the beginning and 533.3MB in the end (delta: -486.9MB). Peak memory consumption was 100.7MB. Max. memory is 16.1GB. * Witness Printer took 69.72ms. Allocated memory is still 729.8MB. Free memory was 533.3MB in the beginning and 527.8MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 38 locations, 37 edges, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 82.2s, OverallIterations: 26, TraceHistogramMax: 10, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 17.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1415 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1280 mSDsluCounter, 2817 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2674 mSDsCounter, 121 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5226 IncrementalHoareTripleChecker+Invalid, 5347 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 121 mSolverCounterUnsat, 143 mSDtfsCounter, 5226 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 562 GetRequests, 130 SyntacticMatches, 31 SemanticMatches, 401 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2453 ImplicationChecksByTransitivity, 38.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1065occurred in iteration=15, InterpolantAutomatonStates: 318, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 62.1s InterpolantComputationTime, 998 NumberOfCodeBlocks, 758 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 1066 ConstructedInterpolants, 39 QuantifiedInterpolants, 81976 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1128 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 35 InterpolantComputations, 22 PerfectInterpolantSequences, 2898/3296 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-09 06:34:46,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE