./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 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_02-funloop_norace.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 ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:19:54,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:19:54,447 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:19:54,452 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:19:54,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:19:54,468 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:19:54,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:19:54,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:19:54,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:19:54,471 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:19:54,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:19:54,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:19:54,471 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:19:54,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:19:54,471 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:19:54,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:19:54,471 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:19:54,471 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:19:54,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:19:54,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:19:54,471 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:19:54,471 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:19:54,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:19:54,472 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:19:54,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:19:54,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:19:54,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:19:54,473 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 -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2025-03-04 15:19:54,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:19:54,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:19:54,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:19:54,701 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:19:54,702 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:19:54,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2025-03-04 15:19:55,790 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1d75f650/13723d3f5a0144b1b47ba3830d82982a/FLAG3adf1a95a [2025-03-04 15:19:56,053 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:19:56,054 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2025-03-04 15:19:56,064 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1d75f650/13723d3f5a0144b1b47ba3830d82982a/FLAG3adf1a95a [2025-03-04 15:19:56,074 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1d75f650/13723d3f5a0144b1b47ba3830d82982a [2025-03-04 15:19:56,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:19:56,077 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:19:56,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:19:56,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:19:56,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:19:56,082 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:19:56" (1/1) ... [2025-03-04 15:19:56,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b8f7f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56, skipping insertion in model container [2025-03-04 15:19:56,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:19:56" (1/1) ... [2025-03-04 15:19:56,106 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:19:56,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:19:56,385 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:19:56,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:19:56,456 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:19:56,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56 WrapperNode [2025-03-04 15:19:56,457 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:19:56,458 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:19:56,458 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:19:56,458 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:19:56,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56" (1/1) ... [2025-03-04 15:19:56,472 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56" (1/1) ... [2025-03-04 15:19:56,489 INFO L138 Inliner]: procedures = 263, calls = 70, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 133 [2025-03-04 15:19:56,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:19:56,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:19:56,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:19:56,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:19:56,496 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56" (1/1) ... [2025-03-04 15:19:56,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56" (1/1) ... [2025-03-04 15:19:56,498 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56" (1/1) ... [2025-03-04 15:19:56,507 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]. [2025-03-04 15:19:56,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56" (1/1) ... [2025-03-04 15:19:56,508 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56" (1/1) ... [2025-03-04 15:19:56,512 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56" (1/1) ... [2025-03-04 15:19:56,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56" (1/1) ... [2025-03-04 15:19:56,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56" (1/1) ... [2025-03-04 15:19:56,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56" (1/1) ... [2025-03-04 15:19:56,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:19:56,520 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:19:56,520 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:19:56,520 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:19:56,521 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56" (1/1) ... [2025-03-04 15:19:56,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:19:56,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:19:56,543 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) [2025-03-04 15:19:56,545 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 [2025-03-04 15:19:56,562 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 15:19:56,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:19:56,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:19:56,562 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 15:19:56,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:19:56,562 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-04 15:19:56,562 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-04 15:19:56,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:19:56,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:19:56,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:19:56,563 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:19:56,644 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:19:56,646 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:19:56,823 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:19:56,823 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:19:57,031 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:19:57,032 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:19:57,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:19:57 BoogieIcfgContainer [2025-03-04 15:19:57,032 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:19:57,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:19:57,034 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:19:57,037 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:19:57,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:19:56" (1/3) ... [2025-03-04 15:19:57,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be75068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:19:57, skipping insertion in model container [2025-03-04 15:19:57,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:56" (2/3) ... [2025-03-04 15:19:57,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be75068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:19:57, skipping insertion in model container [2025-03-04 15:19:57,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:19:57" (3/3) ... [2025-03-04 15:19:57,041 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2025-03-04 15:19:57,053 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:19:57,054 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_02-funloop_norace.i that has 2 procedures, 37 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2025-03-04 15:19:57,055 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:19:57,090 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 15:19:57,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 39 transitions, 82 flow [2025-03-04 15:19:57,142 INFO L124 PetriNetUnfolderBase]: 3/38 cut-off events. [2025-03-04 15:19:57,145 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:19:57,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 3/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2025-03-04 15:19:57,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 39 transitions, 82 flow [2025-03-04 15:19:57,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 79 flow [2025-03-04 15:19:57,158 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:19:57,171 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;@3d18bc73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:19:57,172 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2025-03-04 15:19:57,175 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:19:57,175 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-04 15:19:57,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:19:57,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:19:57,175 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 15:19:57,176 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:19:57,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:19:57,180 INFO L85 PathProgramCache]: Analyzing trace with hash 329749, now seen corresponding path program 1 times [2025-03-04 15:19:57,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:19:57,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191229399] [2025-03-04 15:19:57,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:19:57,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:19:57,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 15:19:57,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 15:19:57,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:19:57,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:57,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:19:57,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191229399] [2025-03-04 15:19:57,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191229399] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:19:57,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:19:57,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:19:57,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028311695] [2025-03-04 15:19:57,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:19:57,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:19:57,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:19:57,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:19:57,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:19:57,515 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-04 15:19:57,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:57,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:19:57,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-04 15:19:57,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:19:57,651 INFO L124 PetriNetUnfolderBase]: 83/260 cut-off events. [2025-03-04 15:19:57,652 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:19:57,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 260 events. 83/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1137 event pairs, 64 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 411. Up to 170 conditions per place. [2025-03-04 15:19:57,654 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 24 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2025-03-04 15:19:57,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 137 flow [2025-03-04 15:19:57,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:19:57,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:19:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2025-03-04 15:19:57,667 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2025-03-04 15:19:57,668 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 79 flow. Second operand 4 states and 86 transitions. [2025-03-04 15:19:57,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 137 flow [2025-03-04 15:19:57,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:19:57,674 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 102 flow [2025-03-04 15:19:57,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2025-03-04 15:19:57,678 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2025-03-04 15:19:57,678 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 102 flow [2025-03-04 15:19:57,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:57,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:19:57,678 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 15:19:57,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:19:57,679 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:19:57,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:19:57,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1233879385, now seen corresponding path program 1 times [2025-03-04 15:19:57,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:19:57,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076995477] [2025-03-04 15:19:57,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:19:57,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:19:57,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:19:57,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:19:57,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:19:57,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:57,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:19:57,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076995477] [2025-03-04 15:19:57,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076995477] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:19:57,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521088755] [2025-03-04 15:19:57,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:19:57,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:19:57,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:19:57,805 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) [2025-03-04 15:19:57,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:19:57,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:19:57,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:19:57,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:19:57,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:57,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:19:57,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:19:57,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:57,913 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:19:57,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521088755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:19:57,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:19:57,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-04 15:19:57,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475556770] [2025-03-04 15:19:57,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:19:57,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:19:57,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:19:57,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:19:57,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:19:57,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-04 15:19:57,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:57,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:19:57,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-04 15:19:57,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:19:58,026 INFO L124 PetriNetUnfolderBase]: 83/259 cut-off events. [2025-03-04 15:19:58,026 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 15:19:58,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 259 events. 83/259 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1133 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 428. Up to 165 conditions per place. [2025-03-04 15:19:58,028 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 20 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2025-03-04 15:19:58,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 150 flow [2025-03-04 15:19:58,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:19:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:19:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2025-03-04 15:19:58,029 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2025-03-04 15:19:58,029 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 102 flow. Second operand 6 states and 111 transitions. [2025-03-04 15:19:58,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 150 flow [2025-03-04 15:19:58,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:19:58,030 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 108 flow [2025-03-04 15:19:58,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2025-03-04 15:19:58,031 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2025-03-04 15:19:58,031 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 108 flow [2025-03-04 15:19:58,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:58,032 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:19:58,032 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-04 15:19:58,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 15:19:58,233 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 [2025-03-04 15:19:58,233 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:19:58,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:19:58,234 INFO L85 PathProgramCache]: Analyzing trace with hash -404444468, now seen corresponding path program 1 times [2025-03-04 15:19:58,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:19:58,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046993911] [2025-03-04 15:19:58,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:19:58,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:19:58,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:19:58,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:19:58,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:19:58,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:19:58,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:19:58,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046993911] [2025-03-04 15:19:58,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046993911] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:19:58,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:19:58,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:19:58,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051297341] [2025-03-04 15:19:58,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:19:58,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:19:58,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:19:58,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:19:58,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:19:58,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-04 15:19:58,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:58,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:19:58,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-04 15:19:58,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:19:58,357 INFO L124 PetriNetUnfolderBase]: 83/258 cut-off events. [2025-03-04 15:19:58,357 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-04 15:19:58,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 258 events. 83/258 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1128 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 424. Up to 168 conditions per place. [2025-03-04 15:19:58,358 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 21 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2025-03-04 15:19:58,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 154 flow [2025-03-04 15:19:58,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:19:58,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:19:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2025-03-04 15:19:58,359 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2025-03-04 15:19:58,359 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 3 states and 66 transitions. [2025-03-04 15:19:58,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 154 flow [2025-03-04 15:19:58,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 132 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-04 15:19:58,360 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 90 flow [2025-03-04 15:19:58,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2025-03-04 15:19:58,363 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2025-03-04 15:19:58,363 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 90 flow [2025-03-04 15:19:58,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:58,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:19:58,363 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:19:58,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:19:58,363 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:19:58,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:19:58,363 INFO L85 PathProgramCache]: Analyzing trace with hash 404320462, now seen corresponding path program 1 times [2025-03-04 15:19:58,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:19:58,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122999436] [2025-03-04 15:19:58,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:19:58,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:19:58,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:19:58,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:19:58,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:19:58,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:58,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:19:58,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122999436] [2025-03-04 15:19:58,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122999436] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:19:58,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762766960] [2025-03-04 15:19:58,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:19:58,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:19:58,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:19:58,438 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) [2025-03-04 15:19:58,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:19:58,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:19:58,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:19:58,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:19:58,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:58,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:19:58,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:19:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:58,514 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:19:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:58,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762766960] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:19:58,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:19:58,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-04 15:19:58,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869639059] [2025-03-04 15:19:58,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:19:58,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:19:58,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:19:58,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:19:58,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:19:58,553 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-04 15:19:58,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 90 flow. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:58,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:19:58,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-04 15:19:58,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:19:58,633 INFO L124 PetriNetUnfolderBase]: 83/262 cut-off events. [2025-03-04 15:19:58,634 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-03-04 15:19:58,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 262 events. 83/262 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1119 event pairs, 64 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 417. Up to 166 conditions per place. [2025-03-04 15:19:58,635 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 21 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2025-03-04 15:19:58,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 161 flow [2025-03-04 15:19:58,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:19:58,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:19:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2025-03-04 15:19:58,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2025-03-04 15:19:58,636 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 90 flow. Second operand 7 states and 128 transitions. [2025-03-04 15:19:58,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 161 flow [2025-03-04 15:19:58,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 147 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:19:58,637 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 116 flow [2025-03-04 15:19:58,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2025-03-04 15:19:58,637 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2025-03-04 15:19:58,638 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 116 flow [2025-03-04 15:19:58,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:58,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:19:58,638 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:19:58,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 15:19:58,838 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 [2025-03-04 15:19:58,838 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:19:58,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:19:58,839 INFO L85 PathProgramCache]: Analyzing trace with hash -547866034, now seen corresponding path program 2 times [2025-03-04 15:19:58,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:19:58,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948701921] [2025-03-04 15:19:58,839 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:19:58,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:19:58,849 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-04 15:19:58,855 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 17 statements. [2025-03-04 15:19:58,855 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:19:58,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:19:58,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:19:58,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948701921] [2025-03-04 15:19:58,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948701921] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:19:58,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:19:58,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:19:58,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222446526] [2025-03-04 15:19:58,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:19:58,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:19:58,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:19:58,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:19:58,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:19:59,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-04 15:19:59,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:59,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:19:59,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-04 15:19:59,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:19:59,156 INFO L124 PetriNetUnfolderBase]: 152/377 cut-off events. [2025-03-04 15:19:59,156 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-03-04 15:19:59,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 377 events. 152/377 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1658 event pairs, 16 based on Foata normal form. 14/322 useless extension candidates. Maximal degree in co-relation 664. Up to 197 conditions per place. [2025-03-04 15:19:59,158 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 60 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2025-03-04 15:19:59,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 82 transitions, 340 flow [2025-03-04 15:19:59,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:19:59,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:19:59,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2025-03-04 15:19:59,160 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6117216117216118 [2025-03-04 15:19:59,160 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 116 flow. Second operand 7 states and 167 transitions. [2025-03-04 15:19:59,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 82 transitions, 340 flow [2025-03-04 15:19:59,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 82 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:19:59,161 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 198 flow [2025-03-04 15:19:59,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2025-03-04 15:19:59,162 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2025-03-04 15:19:59,162 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 198 flow [2025-03-04 15:19:59,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:59,162 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:19:59,162 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:19:59,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:19:59,162 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:19:59,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:19:59,164 INFO L85 PathProgramCache]: Analyzing trace with hash -530597324, now seen corresponding path program 1 times [2025-03-04 15:19:59,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:19:59,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842162825] [2025-03-04 15:19:59,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:19:59,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:19:59,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:19:59,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:19:59,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:19:59,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:59,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:19:59,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842162825] [2025-03-04 15:19:59,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842162825] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:19:59,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357621109] [2025-03-04 15:19:59,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:19:59,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:19:59,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:19:59,272 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) [2025-03-04 15:19:59,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:19:59,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:19:59,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:19:59,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:19:59,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:59,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 15:19:59,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:19:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:59,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:19:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:59,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357621109] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:19:59,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:19:59,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-04 15:19:59,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893643004] [2025-03-04 15:19:59,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:19:59,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-04 15:19:59,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:19:59,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-04 15:19:59,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-04 15:19:59,473 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-04 15:19:59,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 198 flow. Second operand has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:59,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:19:59,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-04 15:19:59,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:19:59,626 INFO L124 PetriNetUnfolderBase]: 121/376 cut-off events. [2025-03-04 15:19:59,627 INFO L125 PetriNetUnfolderBase]: For 174/183 co-relation queries the response was YES. [2025-03-04 15:19:59,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 376 events. 121/376 cut-off events. For 174/183 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1781 event pairs, 63 based on Foata normal form. 4/331 useless extension candidates. Maximal degree in co-relation 767. Up to 241 conditions per place. [2025-03-04 15:19:59,630 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 31 selfloop transitions, 15 changer transitions 0/60 dead transitions. [2025-03-04 15:19:59,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 338 flow [2025-03-04 15:19:59,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 15:19:59,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-04 15:19:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 250 transitions. [2025-03-04 15:19:59,632 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2025-03-04 15:19:59,632 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 198 flow. Second operand 15 states and 250 transitions. [2025-03-04 15:19:59,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 338 flow [2025-03-04 15:19:59,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 60 transitions, 338 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:19:59,637 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 295 flow [2025-03-04 15:19:59,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=295, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2025-03-04 15:19:59,638 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2025-03-04 15:19:59,639 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 295 flow [2025-03-04 15:19:59,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:59,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:19:59,640 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:19:59,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 15:19:59,840 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 [2025-03-04 15:19:59,841 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:19:59,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:19:59,841 INFO L85 PathProgramCache]: Analyzing trace with hash -190976716, now seen corresponding path program 2 times [2025-03-04 15:19:59,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:19:59,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778657257] [2025-03-04 15:19:59,841 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:19:59,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:19:59,849 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-03-04 15:19:59,854 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 29 statements. [2025-03-04 15:19:59,855 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:19:59,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-04 15:19:59,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:19:59,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778657257] [2025-03-04 15:19:59,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778657257] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:19:59,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:19:59,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:19:59,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607642677] [2025-03-04 15:19:59,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:19:59,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:19:59,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:19:59,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:19:59,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:19:59,968 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-04 15:19:59,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:59,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:19:59,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-04 15:19:59,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:00,116 INFO L124 PetriNetUnfolderBase]: 145/404 cut-off events. [2025-03-04 15:20:00,117 INFO L125 PetriNetUnfolderBase]: For 240/255 co-relation queries the response was YES. [2025-03-04 15:20:00,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 404 events. 145/404 cut-off events. For 240/255 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1869 event pairs, 34 based on Foata normal form. 28/392 useless extension candidates. Maximal degree in co-relation 860. Up to 236 conditions per place. [2025-03-04 15:20:00,118 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 64 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2025-03-04 15:20:00,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 90 transitions, 571 flow [2025-03-04 15:20:00,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:20:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:20:00,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2025-03-04 15:20:00,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5934065934065934 [2025-03-04 15:20:00,119 INFO L175 Difference]: Start difference. First operand has 75 places, 60 transitions, 295 flow. Second operand 7 states and 162 transitions. [2025-03-04 15:20:00,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 90 transitions, 571 flow [2025-03-04 15:20:00,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 561 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-04 15:20:00,122 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 383 flow [2025-03-04 15:20:00,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2025-03-04 15:20:00,123 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 43 predicate places. [2025-03-04 15:20:00,123 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 383 flow [2025-03-04 15:20:00,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:00,123 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:00,123 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:00,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 15:20:00,123 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:00,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:00,123 INFO L85 PathProgramCache]: Analyzing trace with hash 2134326649, now seen corresponding path program 1 times [2025-03-04 15:20:00,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:00,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999256581] [2025-03-04 15:20:00,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:00,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:00,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-04 15:20:00,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 15:20:00,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:00,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:00,362 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:00,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:00,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999256581] [2025-03-04 15:20:00,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999256581] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:20:00,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394564458] [2025-03-04 15:20:00,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:00,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:20:00,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:20:00,365 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) [2025-03-04 15:20:00,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 15:20:00,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-04 15:20:00,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 15:20:00,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:00,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:00,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 15:20:00,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:20:00,470 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:00,471 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:20:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:00,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394564458] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:20:00,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:20:00,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-03-04 15:20:00,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214676382] [2025-03-04 15:20:00,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:20:00,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 15:20:00,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:00,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 15:20:00,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-03-04 15:20:00,662 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-04 15:20:00,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 383 flow. Second operand has 23 states, 23 states have (on average 15.304347826086957) internal successors, (352), 23 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:00,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:00,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-04 15:20:00,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:00,867 INFO L124 PetriNetUnfolderBase]: 125/394 cut-off events. [2025-03-04 15:20:00,867 INFO L125 PetriNetUnfolderBase]: For 389/399 co-relation queries the response was YES. [2025-03-04 15:20:00,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 394 events. 125/394 cut-off events. For 389/399 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1836 event pairs, 52 based on Foata normal form. 3/362 useless extension candidates. Maximal degree in co-relation 948. Up to 248 conditions per place. [2025-03-04 15:20:00,870 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 39 selfloop transitions, 21 changer transitions 0/74 dead transitions. [2025-03-04 15:20:00,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 74 transitions, 557 flow [2025-03-04 15:20:00,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-04 15:20:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-04 15:20:00,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 339 transitions. [2025-03-04 15:20:00,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4139194139194139 [2025-03-04 15:20:00,871 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 383 flow. Second operand 21 states and 339 transitions. [2025-03-04 15:20:00,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 74 transitions, 557 flow [2025-03-04 15:20:00,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 74 transitions, 547 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:20:00,875 INFO L231 Difference]: Finished difference. Result has 104 places, 74 transitions, 484 flow [2025-03-04 15:20:00,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=484, PETRI_PLACES=104, PETRI_TRANSITIONS=74} [2025-03-04 15:20:00,876 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 65 predicate places. [2025-03-04 15:20:00,876 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 74 transitions, 484 flow [2025-03-04 15:20:00,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 15.304347826086957) internal successors, (352), 23 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:00,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:00,876 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:00,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 15:20:01,076 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 [2025-03-04 15:20:01,077 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:01,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:01,077 INFO L85 PathProgramCache]: Analyzing trace with hash -456015051, now seen corresponding path program 2 times [2025-03-04 15:20:01,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:01,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116182193] [2025-03-04 15:20:01,077 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:20:01,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:01,087 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-03-04 15:20:01,092 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 39 statements. [2025-03-04 15:20:01,093 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:20:01,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:01,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:01,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116182193] [2025-03-04 15:20:01,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116182193] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:01,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:01,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:20:01,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508231118] [2025-03-04 15:20:01,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:01,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:20:01,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:01,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:20:01,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:20:01,212 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-04 15:20:01,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 74 transitions, 484 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:01,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:01,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-04 15:20:01,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:01,362 INFO L124 PetriNetUnfolderBase]: 143/415 cut-off events. [2025-03-04 15:20:01,362 INFO L125 PetriNetUnfolderBase]: For 474/476 co-relation queries the response was YES. [2025-03-04 15:20:01,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1178 conditions, 415 events. 143/415 cut-off events. For 474/476 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1885 event pairs, 36 based on Foata normal form. 15/390 useless extension candidates. Maximal degree in co-relation 1007. Up to 234 conditions per place. [2025-03-04 15:20:01,365 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 71 selfloop transitions, 13 changer transitions 0/95 dead transitions. [2025-03-04 15:20:01,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 95 transitions, 738 flow [2025-03-04 15:20:01,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:20:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:20:01,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2025-03-04 15:20:01,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5824175824175825 [2025-03-04 15:20:01,367 INFO L175 Difference]: Start difference. First operand has 104 places, 74 transitions, 484 flow. Second operand 7 states and 159 transitions. [2025-03-04 15:20:01,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 95 transitions, 738 flow [2025-03-04 15:20:01,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 95 transitions, 685 flow, removed 1 selfloop flow, removed 14 redundant places. [2025-03-04 15:20:01,376 INFO L231 Difference]: Finished difference. Result has 96 places, 73 transitions, 453 flow [2025-03-04 15:20:01,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=453, PETRI_PLACES=96, PETRI_TRANSITIONS=73} [2025-03-04 15:20:01,377 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 57 predicate places. [2025-03-04 15:20:01,377 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 73 transitions, 453 flow [2025-03-04 15:20:01,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:01,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:01,377 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:01,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 15:20:01,377 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:01,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:01,378 INFO L85 PathProgramCache]: Analyzing trace with hash 641178042, now seen corresponding path program 1 times [2025-03-04 15:20:01,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:01,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115511579] [2025-03-04 15:20:01,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:01,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:01,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-04 15:20:01,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-04 15:20:01,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:01,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:01,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:01,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115511579] [2025-03-04 15:20:01,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115511579] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:01,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:01,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:20:01,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726086939] [2025-03-04 15:20:01,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:01,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:20:01,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:01,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:20:01,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:20:01,470 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-04 15:20:01,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 73 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:01,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:01,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-04 15:20:01,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:01,610 INFO L124 PetriNetUnfolderBase]: 208/563 cut-off events. [2025-03-04 15:20:01,611 INFO L125 PetriNetUnfolderBase]: For 525/529 co-relation queries the response was YES. [2025-03-04 15:20:01,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 563 events. 208/563 cut-off events. For 525/529 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2597 event pairs, 49 based on Foata normal form. 12/530 useless extension candidates. Maximal degree in co-relation 1403. Up to 249 conditions per place. [2025-03-04 15:20:01,614 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 89 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2025-03-04 15:20:01,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 104 transitions, 761 flow [2025-03-04 15:20:01,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:20:01,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:20:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-03-04 15:20:01,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2025-03-04 15:20:01,615 INFO L175 Difference]: Start difference. First operand has 96 places, 73 transitions, 453 flow. Second operand 4 states and 109 transitions. [2025-03-04 15:20:01,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 104 transitions, 761 flow [2025-03-04 15:20:01,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 729 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-04 15:20:01,618 INFO L231 Difference]: Finished difference. Result has 96 places, 75 transitions, 456 flow [2025-03-04 15:20:01,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=456, PETRI_PLACES=96, PETRI_TRANSITIONS=75} [2025-03-04 15:20:01,619 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 57 predicate places. [2025-03-04 15:20:01,619 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 75 transitions, 456 flow [2025-03-04 15:20:01,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:01,619 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:01,619 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:01,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-04 15:20:01,619 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:01,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:01,620 INFO L85 PathProgramCache]: Analyzing trace with hash -162503201, now seen corresponding path program 1 times [2025-03-04 15:20:01,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:01,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557921623] [2025-03-04 15:20:01,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:01,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:01,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-04 15:20:01,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-04 15:20:01,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:01,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:01,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:01,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557921623] [2025-03-04 15:20:01,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557921623] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:01,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:01,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:20:01,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091089138] [2025-03-04 15:20:01,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:01,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:20:01,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:01,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:20:01,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:20:01,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-04 15:20:01,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 75 transitions, 456 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:01,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:01,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-04 15:20:01,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:01,810 INFO L124 PetriNetUnfolderBase]: 318/864 cut-off events. [2025-03-04 15:20:01,810 INFO L125 PetriNetUnfolderBase]: For 812/851 co-relation queries the response was YES. [2025-03-04 15:20:01,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2348 conditions, 864 events. 318/864 cut-off events. For 812/851 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4407 event pairs, 139 based on Foata normal form. 19/849 useless extension candidates. Maximal degree in co-relation 2197. Up to 401 conditions per place. [2025-03-04 15:20:01,815 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 95 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2025-03-04 15:20:01,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 110 transitions, 813 flow [2025-03-04 15:20:01,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:20:01,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:20:01,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-03-04 15:20:01,816 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2025-03-04 15:20:01,816 INFO L175 Difference]: Start difference. First operand has 96 places, 75 transitions, 456 flow. Second operand 4 states and 109 transitions. [2025-03-04 15:20:01,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 110 transitions, 813 flow [2025-03-04 15:20:01,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 110 transitions, 805 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:20:01,820 INFO L231 Difference]: Finished difference. Result has 100 places, 77 transitions, 480 flow [2025-03-04 15:20:01,820 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=480, PETRI_PLACES=100, PETRI_TRANSITIONS=77} [2025-03-04 15:20:01,820 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 61 predicate places. [2025-03-04 15:20:01,820 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 77 transitions, 480 flow [2025-03-04 15:20:01,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:01,820 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:01,820 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:01,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-04 15:20:01,821 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:01,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash 856454757, now seen corresponding path program 1 times [2025-03-04 15:20:01,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:01,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152378730] [2025-03-04 15:20:01,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:01,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-04 15:20:01,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 15:20:01,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:01,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:02,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:02,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152378730] [2025-03-04 15:20:02,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152378730] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:02,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:02,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 15:20:02,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924056818] [2025-03-04 15:20:02,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:02,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 15:20:02,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:02,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 15:20:02,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:20:02,202 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-04 15:20:02,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 77 transitions, 480 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:02,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:02,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-04 15:20:02,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:02,451 INFO L124 PetriNetUnfolderBase]: 318/914 cut-off events. [2025-03-04 15:20:02,451 INFO L125 PetriNetUnfolderBase]: For 976/1010 co-relation queries the response was YES. [2025-03-04 15:20:02,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2626 conditions, 914 events. 318/914 cut-off events. For 976/1010 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5015 event pairs, 84 based on Foata normal form. 7/920 useless extension candidates. Maximal degree in co-relation 2473. Up to 331 conditions per place. [2025-03-04 15:20:02,457 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 113 selfloop transitions, 16 changer transitions 0/142 dead transitions. [2025-03-04 15:20:02,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 142 transitions, 1058 flow [2025-03-04 15:20:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 15:20:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 15:20:02,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2025-03-04 15:20:02,458 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2025-03-04 15:20:02,458 INFO L175 Difference]: Start difference. First operand has 100 places, 77 transitions, 480 flow. Second operand 8 states and 196 transitions. [2025-03-04 15:20:02,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 142 transitions, 1058 flow [2025-03-04 15:20:02,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 142 transitions, 1046 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:20:02,464 INFO L231 Difference]: Finished difference. Result has 111 places, 88 transitions, 596 flow [2025-03-04 15:20:02,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=596, PETRI_PLACES=111, PETRI_TRANSITIONS=88} [2025-03-04 15:20:02,465 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2025-03-04 15:20:02,466 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 88 transitions, 596 flow [2025-03-04 15:20:02,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:02,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:02,466 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:02,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-04 15:20:02,466 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:02,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:02,467 INFO L85 PathProgramCache]: Analyzing trace with hash 845129387, now seen corresponding path program 2 times [2025-03-04 15:20:02,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:02,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632320426] [2025-03-04 15:20:02,467 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:20:02,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:02,476 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-04 15:20:02,482 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-04 15:20:02,483 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:20:02,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:02,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:02,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632320426] [2025-03-04 15:20:02,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632320426] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:02,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:02,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-04 15:20:02,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600845729] [2025-03-04 15:20:02,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:02,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 15:20:02,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:02,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 15:20:02,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-03-04 15:20:02,698 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-04 15:20:02,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 88 transitions, 596 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:02,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:02,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-04 15:20:02,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:03,048 INFO L124 PetriNetUnfolderBase]: 383/1090 cut-off events. [2025-03-04 15:20:03,048 INFO L125 PetriNetUnfolderBase]: For 1699/1762 co-relation queries the response was YES. [2025-03-04 15:20:03,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3542 conditions, 1090 events. 383/1090 cut-off events. For 1699/1762 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6389 event pairs, 53 based on Foata normal form. 7/1097 useless extension candidates. Maximal degree in co-relation 3383. Up to 332 conditions per place. [2025-03-04 15:20:03,055 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 137 selfloop transitions, 48 changer transitions 0/198 dead transitions. [2025-03-04 15:20:03,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 198 transitions, 1605 flow [2025-03-04 15:20:03,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 15:20:03,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-04 15:20:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 288 transitions. [2025-03-04 15:20:03,058 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2025-03-04 15:20:03,058 INFO L175 Difference]: Start difference. First operand has 111 places, 88 transitions, 596 flow. Second operand 12 states and 288 transitions. [2025-03-04 15:20:03,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 198 transitions, 1605 flow [2025-03-04 15:20:03,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 198 transitions, 1592 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:20:03,066 INFO L231 Difference]: Finished difference. Result has 126 places, 123 transitions, 967 flow [2025-03-04 15:20:03,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=967, PETRI_PLACES=126, PETRI_TRANSITIONS=123} [2025-03-04 15:20:03,066 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 87 predicate places. [2025-03-04 15:20:03,067 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 123 transitions, 967 flow [2025-03-04 15:20:03,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:03,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:03,067 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:03,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-04 15:20:03,067 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:03,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:03,068 INFO L85 PathProgramCache]: Analyzing trace with hash -511220181, now seen corresponding path program 3 times [2025-03-04 15:20:03,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:03,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050676476] [2025-03-04 15:20:03,068 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:20:03,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:03,076 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 11 equivalence classes. [2025-03-04 15:20:03,080 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-04 15:20:03,080 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 15:20:03,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:03,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:03,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050676476] [2025-03-04 15:20:03,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050676476] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:03,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:03,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-04 15:20:03,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390537241] [2025-03-04 15:20:03,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:03,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 15:20:03,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:03,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 15:20:03,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-04 15:20:03,273 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-04 15:20:03,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 123 transitions, 967 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:03,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:03,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-04 15:20:03,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:03,601 INFO L124 PetriNetUnfolderBase]: 403/1155 cut-off events. [2025-03-04 15:20:03,601 INFO L125 PetriNetUnfolderBase]: For 2875/2937 co-relation queries the response was YES. [2025-03-04 15:20:03,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4304 conditions, 1155 events. 403/1155 cut-off events. For 2875/2937 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6934 event pairs, 56 based on Foata normal form. 18/1172 useless extension candidates. Maximal degree in co-relation 4138. Up to 330 conditions per place. [2025-03-04 15:20:03,610 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 152 selfloop transitions, 57 changer transitions 0/222 dead transitions. [2025-03-04 15:20:03,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 222 transitions, 2092 flow [2025-03-04 15:20:03,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 15:20:03,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-04 15:20:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2025-03-04 15:20:03,612 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6317016317016317 [2025-03-04 15:20:03,612 INFO L175 Difference]: Start difference. First operand has 126 places, 123 transitions, 967 flow. Second operand 11 states and 271 transitions. [2025-03-04 15:20:03,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 222 transitions, 2092 flow [2025-03-04 15:20:03,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 222 transitions, 2015 flow, removed 30 selfloop flow, removed 2 redundant places. [2025-03-04 15:20:03,624 INFO L231 Difference]: Finished difference. Result has 139 places, 142 transitions, 1307 flow [2025-03-04 15:20:03,625 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1307, PETRI_PLACES=139, PETRI_TRANSITIONS=142} [2025-03-04 15:20:03,625 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 100 predicate places. [2025-03-04 15:20:03,625 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 142 transitions, 1307 flow [2025-03-04 15:20:03,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:03,625 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:03,625 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:03,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-04 15:20:03,626 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:03,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:03,626 INFO L85 PathProgramCache]: Analyzing trace with hash -705858951, now seen corresponding path program 1 times [2025-03-04 15:20:03,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:03,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812512720] [2025-03-04 15:20:03,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:03,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:03,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-04 15:20:03,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 15:20:03,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:03,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:03,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:03,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812512720] [2025-03-04 15:20:03,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812512720] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:03,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:03,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 15:20:03,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869834005] [2025-03-04 15:20:03,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:03,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 15:20:03,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:03,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 15:20:03,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:20:03,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-04 15:20:03,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 142 transitions, 1307 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:03,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:03,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-04 15:20:03,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:04,274 INFO L124 PetriNetUnfolderBase]: 452/1290 cut-off events. [2025-03-04 15:20:04,274 INFO L125 PetriNetUnfolderBase]: For 4498/4565 co-relation queries the response was YES. [2025-03-04 15:20:04,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5206 conditions, 1290 events. 452/1290 cut-off events. For 4498/4565 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7871 event pairs, 134 based on Foata normal form. 9/1299 useless extension candidates. Maximal degree in co-relation 5034. Up to 441 conditions per place. [2025-03-04 15:20:04,283 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 167 selfloop transitions, 42 changer transitions 0/222 dead transitions. [2025-03-04 15:20:04,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 222 transitions, 2361 flow [2025-03-04 15:20:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 15:20:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 15:20:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2025-03-04 15:20:04,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6474358974358975 [2025-03-04 15:20:04,284 INFO L175 Difference]: Start difference. First operand has 139 places, 142 transitions, 1307 flow. Second operand 8 states and 202 transitions. [2025-03-04 15:20:04,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 222 transitions, 2361 flow [2025-03-04 15:20:04,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 222 transitions, 2266 flow, removed 10 selfloop flow, removed 3 redundant places. [2025-03-04 15:20:04,299 INFO L231 Difference]: Finished difference. Result has 147 places, 156 transitions, 1542 flow [2025-03-04 15:20:04,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1542, PETRI_PLACES=147, PETRI_TRANSITIONS=156} [2025-03-04 15:20:04,301 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 108 predicate places. [2025-03-04 15:20:04,301 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 156 transitions, 1542 flow [2025-03-04 15:20:04,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:04,301 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:04,301 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:04,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-04 15:20:04,302 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:04,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:04,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1054327311, now seen corresponding path program 4 times [2025-03-04 15:20:04,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:04,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773664553] [2025-03-04 15:20:04,302 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:20:04,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:04,311 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-03-04 15:20:04,324 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 15:20:04,325 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:20:04,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:20:04,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:04,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773664553] [2025-03-04 15:20:04,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773664553] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:04,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:04,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-04 15:20:04,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679179456] [2025-03-04 15:20:04,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:04,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 15:20:04,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:04,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 15:20:04,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:20:04,478 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-04 15:20:04,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 156 transitions, 1542 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:04,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:04,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-04 15:20:04,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:04,899 INFO L124 PetriNetUnfolderBase]: 529/1489 cut-off events. [2025-03-04 15:20:04,899 INFO L125 PetriNetUnfolderBase]: For 6294/6366 co-relation queries the response was YES. [2025-03-04 15:20:04,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6399 conditions, 1489 events. 529/1489 cut-off events. For 6294/6366 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9555 event pairs, 73 based on Foata normal form. 22/1510 useless extension candidates. Maximal degree in co-relation 6223. Up to 351 conditions per place. [2025-03-04 15:20:04,911 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 201 selfloop transitions, 72 changer transitions 0/286 dead transitions. [2025-03-04 15:20:04,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 286 transitions, 3132 flow [2025-03-04 15:20:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 15:20:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-04 15:20:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 292 transitions. [2025-03-04 15:20:04,912 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6806526806526807 [2025-03-04 15:20:04,912 INFO L175 Difference]: Start difference. First operand has 147 places, 156 transitions, 1542 flow. Second operand 11 states and 292 transitions. [2025-03-04 15:20:04,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 286 transitions, 3132 flow [2025-03-04 15:20:04,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 286 transitions, 3025 flow, removed 17 selfloop flow, removed 4 redundant places. [2025-03-04 15:20:04,934 INFO L231 Difference]: Finished difference. Result has 159 places, 184 transitions, 2068 flow [2025-03-04 15:20:04,935 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1475, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2068, PETRI_PLACES=159, PETRI_TRANSITIONS=184} [2025-03-04 15:20:04,935 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 120 predicate places. [2025-03-04 15:20:04,935 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 184 transitions, 2068 flow [2025-03-04 15:20:04,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:04,935 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:04,935 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:04,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-04 15:20:04,936 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:04,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1877277001, now seen corresponding path program 2 times [2025-03-04 15:20:04,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:04,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205981418] [2025-03-04 15:20:04,936 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:20:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:04,947 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-04 15:20:04,949 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 44 statements. [2025-03-04 15:20:04,949 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:20:04,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:20:05,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205981418] [2025-03-04 15:20:05,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205981418] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:05,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:05,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 15:20:05,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563012216] [2025-03-04 15:20:05,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:05,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 15:20:05,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:05,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 15:20:05,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 15:20:05,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-04 15:20:05,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 184 transitions, 2068 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:05,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:05,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-04 15:20:05,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:05,348 INFO L124 PetriNetUnfolderBase]: 561/1585 cut-off events. [2025-03-04 15:20:05,348 INFO L125 PetriNetUnfolderBase]: For 9032/9119 co-relation queries the response was YES. [2025-03-04 15:20:05,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7293 conditions, 1585 events. 561/1585 cut-off events. For 9032/9119 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 10330 event pairs, 157 based on Foata normal form. 20/1603 useless extension candidates. Maximal degree in co-relation 7113. Up to 453 conditions per place. [2025-03-04 15:20:05,363 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 213 selfloop transitions, 50 changer transitions 0/276 dead transitions. [2025-03-04 15:20:05,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 276 transitions, 3404 flow [2025-03-04 15:20:05,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:20:05,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:20:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2025-03-04 15:20:05,364 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7032967032967034 [2025-03-04 15:20:05,364 INFO L175 Difference]: Start difference. First operand has 159 places, 184 transitions, 2068 flow. Second operand 7 states and 192 transitions. [2025-03-04 15:20:05,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 276 transitions, 3404 flow [2025-03-04 15:20:05,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 276 transitions, 3329 flow, removed 20 selfloop flow, removed 2 redundant places. [2025-03-04 15:20:05,394 INFO L231 Difference]: Finished difference. Result has 168 places, 207 transitions, 2539 flow [2025-03-04 15:20:05,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2539, PETRI_PLACES=168, PETRI_TRANSITIONS=207} [2025-03-04 15:20:05,395 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 129 predicate places. [2025-03-04 15:20:05,395 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 207 transitions, 2539 flow [2025-03-04 15:20:05,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:05,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:05,395 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:05,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-04 15:20:05,395 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:05,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:05,396 INFO L85 PathProgramCache]: Analyzing trace with hash 486789415, now seen corresponding path program 5 times [2025-03-04 15:20:05,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:05,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732744405] [2025-03-04 15:20:05,396 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:20:05,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:05,403 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-03-04 15:20:05,415 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 15:20:05,415 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-04 15:20:05,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:05,823 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-03-04 15:20:05,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:05,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732744405] [2025-03-04 15:20:05,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732744405] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:20:05,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313646438] [2025-03-04 15:20:05,824 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:20:05,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:20:05,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:20:05,826 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) [2025-03-04 15:20:05,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 15:20:05,878 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-03-04 15:20:05,928 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 15:20:05,928 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-04 15:20:05,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:05,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-04 15:20:05,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:20:06,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-04 15:20:06,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-04 15:20:06,306 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:06,306 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:20:06,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313646438] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:06,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:20:06,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2025-03-04 15:20:06,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396400166] [2025-03-04 15:20:06,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:06,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:20:06,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:06,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:20:06,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2025-03-04 15:20:06,323 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2025-03-04 15:20:06,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 207 transitions, 2539 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:06,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:06,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2025-03-04 15:20:06,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:07,066 INFO L124 PetriNetUnfolderBase]: 990/2414 cut-off events. [2025-03-04 15:20:07,066 INFO L125 PetriNetUnfolderBase]: For 15929/15941 co-relation queries the response was YES. [2025-03-04 15:20:07,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11525 conditions, 2414 events. 990/2414 cut-off events. For 15929/15941 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 16309 event pairs, 278 based on Foata normal form. 33/2447 useless extension candidates. Maximal degree in co-relation 11340. Up to 1343 conditions per place. [2025-03-04 15:20:07,088 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 305 selfloop transitions, 73 changer transitions 0/388 dead transitions. [2025-03-04 15:20:07,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 388 transitions, 5155 flow [2025-03-04 15:20:07,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 15:20:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-04 15:20:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 355 transitions. [2025-03-04 15:20:07,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689102564102564 [2025-03-04 15:20:07,090 INFO L175 Difference]: Start difference. First operand has 168 places, 207 transitions, 2539 flow. Second operand 16 states and 355 transitions. [2025-03-04 15:20:07,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 388 transitions, 5155 flow [2025-03-04 15:20:07,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 388 transitions, 5057 flow, removed 49 selfloop flow, removed 0 redundant places. [2025-03-04 15:20:07,133 INFO L231 Difference]: Finished difference. Result has 196 places, 261 transitions, 3306 flow [2025-03-04 15:20:07,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3306, PETRI_PLACES=196, PETRI_TRANSITIONS=261} [2025-03-04 15:20:07,134 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 157 predicate places. [2025-03-04 15:20:07,134 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 261 transitions, 3306 flow [2025-03-04 15:20:07,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:07,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:07,134 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:07,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 15:20:07,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-04 15:20:07,339 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:07,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:07,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1804758933, now seen corresponding path program 3 times [2025-03-04 15:20:07,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:07,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335715328] [2025-03-04 15:20:07,340 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:20:07,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:07,347 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 11 equivalence classes. [2025-03-04 15:20:07,349 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 44 statements. [2025-03-04 15:20:07,349 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 15:20:07,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:20:07,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:07,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335715328] [2025-03-04 15:20:07,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335715328] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:07,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:07,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 15:20:07,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942125496] [2025-03-04 15:20:07,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:07,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 15:20:07,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:07,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 15:20:07,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 15:20:07,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-04 15:20:07,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 261 transitions, 3306 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:07,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:07,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-04 15:20:07,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:07,792 INFO L124 PetriNetUnfolderBase]: 699/1929 cut-off events. [2025-03-04 15:20:07,793 INFO L125 PetriNetUnfolderBase]: For 16052/16234 co-relation queries the response was YES. [2025-03-04 15:20:07,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10102 conditions, 1929 events. 699/1929 cut-off events. For 16052/16234 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 13242 event pairs, 193 based on Foata normal form. 40/1967 useless extension candidates. Maximal degree in co-relation 9902. Up to 680 conditions per place. [2025-03-04 15:20:07,812 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 223 selfloop transitions, 76 changer transitions 0/314 dead transitions. [2025-03-04 15:20:07,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 314 transitions, 4373 flow [2025-03-04 15:20:07,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:20:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:20:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2025-03-04 15:20:07,816 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.673992673992674 [2025-03-04 15:20:07,816 INFO L175 Difference]: Start difference. First operand has 196 places, 261 transitions, 3306 flow. Second operand 7 states and 184 transitions. [2025-03-04 15:20:07,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 314 transitions, 4373 flow [2025-03-04 15:20:07,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 314 transitions, 4299 flow, removed 28 selfloop flow, removed 1 redundant places. [2025-03-04 15:20:07,874 INFO L231 Difference]: Finished difference. Result has 204 places, 267 transitions, 3539 flow [2025-03-04 15:20:07,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3204, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3539, PETRI_PLACES=204, PETRI_TRANSITIONS=267} [2025-03-04 15:20:07,874 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 165 predicate places. [2025-03-04 15:20:07,874 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 267 transitions, 3539 flow [2025-03-04 15:20:07,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:07,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:07,875 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:07,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-04 15:20:07,875 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:07,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:07,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1014249127, now seen corresponding path program 6 times [2025-03-04 15:20:07,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:07,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704671618] [2025-03-04 15:20:07,876 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 15:20:07,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:07,883 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 11 equivalence classes. [2025-03-04 15:20:07,885 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 13 of 44 statements. [2025-03-04 15:20:07,885 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-04 15:20:07,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:20:07,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:07,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704671618] [2025-03-04 15:20:07,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704671618] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:07,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:07,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-04 15:20:07,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983864830] [2025-03-04 15:20:07,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:07,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 15:20:07,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:07,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 15:20:07,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:20:07,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-04 15:20:07,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 267 transitions, 3539 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:07,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:07,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-04 15:20:07,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:08,499 INFO L124 PetriNetUnfolderBase]: 699/1912 cut-off events. [2025-03-04 15:20:08,499 INFO L125 PetriNetUnfolderBase]: For 17606/17820 co-relation queries the response was YES. [2025-03-04 15:20:08,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10205 conditions, 1912 events. 699/1912 cut-off events. For 17606/17820 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13131 event pairs, 104 based on Foata normal form. 55/1964 useless extension candidates. Maximal degree in co-relation 10002. Up to 496 conditions per place. [2025-03-04 15:20:08,520 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 264 selfloop transitions, 96 changer transitions 0/375 dead transitions. [2025-03-04 15:20:08,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 375 transitions, 5172 flow [2025-03-04 15:20:08,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 15:20:08,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-04 15:20:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2025-03-04 15:20:08,521 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.655982905982906 [2025-03-04 15:20:08,521 INFO L175 Difference]: Start difference. First operand has 204 places, 267 transitions, 3539 flow. Second operand 12 states and 307 transitions. [2025-03-04 15:20:08,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 375 transitions, 5172 flow [2025-03-04 15:20:08,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 375 transitions, 5027 flow, removed 9 selfloop flow, removed 3 redundant places. [2025-03-04 15:20:08,589 INFO L231 Difference]: Finished difference. Result has 216 places, 279 transitions, 3887 flow [2025-03-04 15:20:08,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3410, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3887, PETRI_PLACES=216, PETRI_TRANSITIONS=279} [2025-03-04 15:20:08,590 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 177 predicate places. [2025-03-04 15:20:08,590 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 279 transitions, 3887 flow [2025-03-04 15:20:08,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:08,591 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:08,591 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:08,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-04 15:20:08,591 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:08,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:08,591 INFO L85 PathProgramCache]: Analyzing trace with hash 554579059, now seen corresponding path program 7 times [2025-03-04 15:20:08,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:08,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691717487] [2025-03-04 15:20:08,592 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 15:20:08,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:08,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-04 15:20:08,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 15:20:08,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:08,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:08,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:08,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691717487] [2025-03-04 15:20:08,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691717487] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:08,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:08,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-04 15:20:08,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822713059] [2025-03-04 15:20:08,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:08,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 15:20:08,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:08,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 15:20:08,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-04 15:20:08,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-04 15:20:08,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 279 transitions, 3887 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:08,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:08,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-04 15:20:08,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:09,352 INFO L124 PetriNetUnfolderBase]: 684/1878 cut-off events. [2025-03-04 15:20:09,352 INFO L125 PetriNetUnfolderBase]: For 18411/18609 co-relation queries the response was YES. [2025-03-04 15:20:09,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10259 conditions, 1878 events. 684/1878 cut-off events. For 18411/18609 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12800 event pairs, 78 based on Foata normal form. 63/1939 useless extension candidates. Maximal degree in co-relation 10052. Up to 429 conditions per place. [2025-03-04 15:20:09,366 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 248 selfloop transitions, 112 changer transitions 0/375 dead transitions. [2025-03-04 15:20:09,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 375 transitions, 5357 flow [2025-03-04 15:20:09,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 15:20:09,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-04 15:20:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 319 transitions. [2025-03-04 15:20:09,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6291913214990138 [2025-03-04 15:20:09,367 INFO L175 Difference]: Start difference. First operand has 216 places, 279 transitions, 3887 flow. Second operand 13 states and 319 transitions. [2025-03-04 15:20:09,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 375 transitions, 5357 flow [2025-03-04 15:20:09,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 375 transitions, 5208 flow, removed 39 selfloop flow, removed 4 redundant places. [2025-03-04 15:20:09,422 INFO L231 Difference]: Finished difference. Result has 228 places, 288 transitions, 4230 flow [2025-03-04 15:20:09,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3716, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4230, PETRI_PLACES=228, PETRI_TRANSITIONS=288} [2025-03-04 15:20:09,423 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 189 predicate places. [2025-03-04 15:20:09,423 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 288 transitions, 4230 flow [2025-03-04 15:20:09,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:09,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:09,423 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:09,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-04 15:20:09,424 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:09,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:09,424 INFO L85 PathProgramCache]: Analyzing trace with hash 920729425, now seen corresponding path program 4 times [2025-03-04 15:20:09,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:09,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242344404] [2025-03-04 15:20:09,424 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:20:09,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:09,431 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-03-04 15:20:09,439 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 15:20:09,439 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:20:09,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:20:09,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:09,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242344404] [2025-03-04 15:20:09,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242344404] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:09,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:09,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 15:20:09,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770133818] [2025-03-04 15:20:09,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:09,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 15:20:09,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:09,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 15:20:09,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 15:20:09,568 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-04 15:20:09,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 288 transitions, 4230 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:09,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:09,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-04 15:20:09,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:10,001 INFO L124 PetriNetUnfolderBase]: 602/1695 cut-off events. [2025-03-04 15:20:10,001 INFO L125 PetriNetUnfolderBase]: For 17839/18008 co-relation queries the response was YES. [2025-03-04 15:20:10,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9409 conditions, 1695 events. 602/1695 cut-off events. For 17839/18008 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 11232 event pairs, 181 based on Foata normal form. 41/1735 useless extension candidates. Maximal degree in co-relation 9198. Up to 543 conditions per place. [2025-03-04 15:20:10,017 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 229 selfloop transitions, 69 changer transitions 0/313 dead transitions. [2025-03-04 15:20:10,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 313 transitions, 4943 flow [2025-03-04 15:20:10,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:20:10,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:20:10,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2025-03-04 15:20:10,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2025-03-04 15:20:10,018 INFO L175 Difference]: Start difference. First operand has 228 places, 288 transitions, 4230 flow. Second operand 7 states and 189 transitions. [2025-03-04 15:20:10,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 313 transitions, 4943 flow [2025-03-04 15:20:10,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 313 transitions, 4761 flow, removed 38 selfloop flow, removed 5 redundant places. [2025-03-04 15:20:10,081 INFO L231 Difference]: Finished difference. Result has 231 places, 282 transitions, 4176 flow [2025-03-04 15:20:10,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3884, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4176, PETRI_PLACES=231, PETRI_TRANSITIONS=282} [2025-03-04 15:20:10,082 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 192 predicate places. [2025-03-04 15:20:10,082 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 282 transitions, 4176 flow [2025-03-04 15:20:10,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:10,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:10,082 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:10,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-04 15:20:10,082 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:10,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:10,083 INFO L85 PathProgramCache]: Analyzing trace with hash -336160275, now seen corresponding path program 5 times [2025-03-04 15:20:10,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:10,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150920056] [2025-03-04 15:20:10,083 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:20:10,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:10,092 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-03-04 15:20:10,102 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 15:20:10,103 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-04 15:20:10,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-03-04 15:20:10,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:10,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150920056] [2025-03-04 15:20:10,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150920056] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:20:10,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141263998] [2025-03-04 15:20:10,482 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:20:10,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:20:10,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:20:10,484 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:20:10,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 15:20:10,537 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-03-04 15:20:10,591 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 15:20:10,591 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-04 15:20:10,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:10,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-04 15:20:10,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:20:10,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-04 15:20:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:10,702 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:20:10,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141263998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:10,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:20:10,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2025-03-04 15:20:10,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473680234] [2025-03-04 15:20:10,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:10,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 15:20:10,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:10,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 15:20:10,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-03-04 15:20:10,703 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-04 15:20:10,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 282 transitions, 4176 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:10,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:10,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-04 15:20:10,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:11,128 INFO L124 PetriNetUnfolderBase]: 600/1731 cut-off events. [2025-03-04 15:20:11,128 INFO L125 PetriNetUnfolderBase]: For 16662/16836 co-relation queries the response was YES. [2025-03-04 15:20:11,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9303 conditions, 1731 events. 600/1731 cut-off events. For 16662/16836 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11726 event pairs, 165 based on Foata normal form. 47/1777 useless extension candidates. Maximal degree in co-relation 9090. Up to 614 conditions per place. [2025-03-04 15:20:11,142 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 270 selfloop transitions, 60 changer transitions 0/345 dead transitions. [2025-03-04 15:20:11,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 345 transitions, 5316 flow [2025-03-04 15:20:11,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:20:11,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:20:11,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2025-03-04 15:20:11,143 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2025-03-04 15:20:11,143 INFO L175 Difference]: Start difference. First operand has 231 places, 282 transitions, 4176 flow. Second operand 10 states and 255 transitions. [2025-03-04 15:20:11,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 345 transitions, 5316 flow [2025-03-04 15:20:11,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 345 transitions, 5242 flow, removed 12 selfloop flow, removed 2 redundant places. [2025-03-04 15:20:11,192 INFO L231 Difference]: Finished difference. Result has 243 places, 290 transitions, 4406 flow [2025-03-04 15:20:11,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4031, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4406, PETRI_PLACES=243, PETRI_TRANSITIONS=290} [2025-03-04 15:20:11,192 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 204 predicate places. [2025-03-04 15:20:11,192 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 290 transitions, 4406 flow [2025-03-04 15:20:11,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:11,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:11,193 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:11,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 15:20:11,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:20:11,393 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:11,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:11,394 INFO L85 PathProgramCache]: Analyzing trace with hash 597574653, now seen corresponding path program 8 times [2025-03-04 15:20:11,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:11,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549651206] [2025-03-04 15:20:11,394 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:20:11,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:11,400 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-04 15:20:11,402 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 44 statements. [2025-03-04 15:20:11,402 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:20:11,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:20:11,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:11,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549651206] [2025-03-04 15:20:11,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549651206] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:11,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:11,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 15:20:11,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419976479] [2025-03-04 15:20:11,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:11,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 15:20:11,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:11,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 15:20:11,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 15:20:11,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-04 15:20:11,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 290 transitions, 4406 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:11,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:11,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-04 15:20:11,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:11,818 INFO L124 PetriNetUnfolderBase]: 552/1586 cut-off events. [2025-03-04 15:20:11,819 INFO L125 PetriNetUnfolderBase]: For 16182/16369 co-relation queries the response was YES. [2025-03-04 15:20:11,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8735 conditions, 1586 events. 552/1586 cut-off events. For 16182/16369 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10408 event pairs, 184 based on Foata normal form. 42/1627 useless extension candidates. Maximal degree in co-relation 8516. Up to 617 conditions per place. [2025-03-04 15:20:11,834 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 225 selfloop transitions, 66 changer transitions 0/306 dead transitions. [2025-03-04 15:20:11,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 306 transitions, 5032 flow [2025-03-04 15:20:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:20:11,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:20:11,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2025-03-04 15:20:11,835 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6556776556776557 [2025-03-04 15:20:11,835 INFO L175 Difference]: Start difference. First operand has 243 places, 290 transitions, 4406 flow. Second operand 7 states and 179 transitions. [2025-03-04 15:20:11,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 306 transitions, 5032 flow [2025-03-04 15:20:11,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 306 transitions, 4895 flow, removed 39 selfloop flow, removed 5 redundant places. [2025-03-04 15:20:11,892 INFO L231 Difference]: Finished difference. Result has 241 places, 282 transitions, 4309 flow [2025-03-04 15:20:11,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4177, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4309, PETRI_PLACES=241, PETRI_TRANSITIONS=282} [2025-03-04 15:20:11,892 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 202 predicate places. [2025-03-04 15:20:11,892 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 282 transitions, 4309 flow [2025-03-04 15:20:11,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:11,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:11,892 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:11,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-04 15:20:11,893 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:11,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:11,893 INFO L85 PathProgramCache]: Analyzing trace with hash 428491537, now seen corresponding path program 1 times [2025-03-04 15:20:11,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:11,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066857713] [2025-03-04 15:20:11,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:11,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:11,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-04 15:20:11,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-04 15:20:11,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:11,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:12,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:12,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066857713] [2025-03-04 15:20:12,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066857713] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:12,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:12,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:12,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623437378] [2025-03-04 15:20:12,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:12,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 15:20:12,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:12,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 15:20:12,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-04 15:20:12,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2025-03-04 15:20:12,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 282 transitions, 4309 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:12,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:12,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2025-03-04 15:20:12,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:12,761 INFO L124 PetriNetUnfolderBase]: 931/2264 cut-off events. [2025-03-04 15:20:12,761 INFO L125 PetriNetUnfolderBase]: For 21320/21345 co-relation queries the response was YES. [2025-03-04 15:20:12,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11936 conditions, 2264 events. 931/2264 cut-off events. For 21320/21345 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 14983 event pairs, 342 based on Foata normal form. 30/2294 useless extension candidates. Maximal degree in co-relation 11720. Up to 1457 conditions per place. [2025-03-04 15:20:12,778 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 332 selfloop transitions, 53 changer transitions 0/394 dead transitions. [2025-03-04 15:20:12,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 394 transitions, 6547 flow [2025-03-04 15:20:12,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 15:20:12,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-04 15:20:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 257 transitions. [2025-03-04 15:20:12,779 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5069033530571992 [2025-03-04 15:20:12,779 INFO L175 Difference]: Start difference. First operand has 241 places, 282 transitions, 4309 flow. Second operand 13 states and 257 transitions. [2025-03-04 15:20:12,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 394 transitions, 6547 flow [2025-03-04 15:20:12,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 394 transitions, 6420 flow, removed 8 selfloop flow, removed 3 redundant places. [2025-03-04 15:20:12,841 INFO L231 Difference]: Finished difference. Result has 258 places, 303 transitions, 4654 flow [2025-03-04 15:20:12,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4209, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4654, PETRI_PLACES=258, PETRI_TRANSITIONS=303} [2025-03-04 15:20:12,842 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 219 predicate places. [2025-03-04 15:20:12,842 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 303 transitions, 4654 flow [2025-03-04 15:20:12,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:12,842 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:12,842 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:12,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-04 15:20:12,842 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:12,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:12,843 INFO L85 PathProgramCache]: Analyzing trace with hash -455002031, now seen corresponding path program 2 times [2025-03-04 15:20:12,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:12,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012726128] [2025-03-04 15:20:12,843 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:20:12,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:12,850 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-03-04 15:20:12,851 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-04 15:20:12,852 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:20:12,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:20:12,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012726128] [2025-03-04 15:20:12,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012726128] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:12,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:12,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:12,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468149965] [2025-03-04 15:20:12,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:12,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:20:12,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:12,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:20:12,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:20:12,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-04 15:20:12,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 303 transitions, 4654 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:12,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:12,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-04 15:20:12,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:13,763 INFO L124 PetriNetUnfolderBase]: 1224/2814 cut-off events. [2025-03-04 15:20:13,763 INFO L125 PetriNetUnfolderBase]: For 30042/30087 co-relation queries the response was YES. [2025-03-04 15:20:13,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15768 conditions, 2814 events. 1224/2814 cut-off events. For 30042/30087 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 18849 event pairs, 361 based on Foata normal form. 36/2850 useless extension candidates. Maximal degree in co-relation 15543. Up to 1125 conditions per place. [2025-03-04 15:20:13,786 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 309 selfloop transitions, 163 changer transitions 0/480 dead transitions. [2025-03-04 15:20:13,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 480 transitions, 7422 flow [2025-03-04 15:20:13,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-04 15:20:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-04 15:20:13,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 345 transitions. [2025-03-04 15:20:13,787 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5203619909502263 [2025-03-04 15:20:13,787 INFO L175 Difference]: Start difference. First operand has 258 places, 303 transitions, 4654 flow. Second operand 17 states and 345 transitions. [2025-03-04 15:20:13,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 480 transitions, 7422 flow [2025-03-04 15:20:13,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 480 transitions, 7339 flow, removed 16 selfloop flow, removed 3 redundant places. [2025-03-04 15:20:13,871 INFO L231 Difference]: Finished difference. Result has 283 places, 378 transitions, 6286 flow [2025-03-04 15:20:13,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4598, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6286, PETRI_PLACES=283, PETRI_TRANSITIONS=378} [2025-03-04 15:20:13,872 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 244 predicate places. [2025-03-04 15:20:13,872 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 378 transitions, 6286 flow [2025-03-04 15:20:13,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:13,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:13,872 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:13,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-04 15:20:13,872 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:13,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:13,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1947777299, now seen corresponding path program 1 times [2025-03-04 15:20:13,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:13,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34209344] [2025-03-04 15:20:13,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:13,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:13,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-04 15:20:13,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-04 15:20:13,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:13,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:14,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:14,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34209344] [2025-03-04 15:20:14,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34209344] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:14,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:14,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:14,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626936977] [2025-03-04 15:20:14,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:14,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 15:20:14,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:14,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 15:20:14,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-04 15:20:14,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-04 15:20:14,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 378 transitions, 6286 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:14,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:14,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-04 15:20:14,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:14,978 INFO L124 PetriNetUnfolderBase]: 1392/3145 cut-off events. [2025-03-04 15:20:14,979 INFO L125 PetriNetUnfolderBase]: For 46272/46330 co-relation queries the response was YES. [2025-03-04 15:20:15,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19828 conditions, 3145 events. 1392/3145 cut-off events. For 46272/46330 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 21452 event pairs, 533 based on Foata normal form. 45/3188 useless extension candidates. Maximal degree in co-relation 19591. Up to 1555 conditions per place. [2025-03-04 15:20:15,009 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 409 selfloop transitions, 124 changer transitions 0/542 dead transitions. [2025-03-04 15:20:15,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 542 transitions, 9424 flow [2025-03-04 15:20:15,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 15:20:15,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-04 15:20:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 352 transitions. [2025-03-04 15:20:15,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5014245014245015 [2025-03-04 15:20:15,010 INFO L175 Difference]: Start difference. First operand has 283 places, 378 transitions, 6286 flow. Second operand 18 states and 352 transitions. [2025-03-04 15:20:15,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 542 transitions, 9424 flow [2025-03-04 15:20:15,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 542 transitions, 9314 flow, removed 43 selfloop flow, removed 1 redundant places. [2025-03-04 15:20:15,147 INFO L231 Difference]: Finished difference. Result has 311 places, 419 transitions, 7368 flow [2025-03-04 15:20:15,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6198, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7368, PETRI_PLACES=311, PETRI_TRANSITIONS=419} [2025-03-04 15:20:15,148 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 272 predicate places. [2025-03-04 15:20:15,148 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 419 transitions, 7368 flow [2025-03-04 15:20:15,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:15,148 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:15,148 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:15,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-04 15:20:15,148 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:15,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:15,149 INFO L85 PathProgramCache]: Analyzing trace with hash -297509075, now seen corresponding path program 3 times [2025-03-04 15:20:15,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:15,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635190363] [2025-03-04 15:20:15,149 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:20:15,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:15,155 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 11 equivalence classes. [2025-03-04 15:20:15,157 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-04 15:20:15,157 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 15:20:15,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:20:15,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:15,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635190363] [2025-03-04 15:20:15,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635190363] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:15,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:15,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:15,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911194705] [2025-03-04 15:20:15,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:15,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:20:15,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:15,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:20:15,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:20:15,256 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-04 15:20:15,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 419 transitions, 7368 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:15,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:15,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-04 15:20:15,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:16,283 INFO L124 PetriNetUnfolderBase]: 1486/3359 cut-off events. [2025-03-04 15:20:16,283 INFO L125 PetriNetUnfolderBase]: For 65608/65658 co-relation queries the response was YES. [2025-03-04 15:20:16,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23983 conditions, 3359 events. 1486/3359 cut-off events. For 65608/65658 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 23397 event pairs, 505 based on Foata normal form. 43/3402 useless extension candidates. Maximal degree in co-relation 23732. Up to 1394 conditions per place. [2025-03-04 15:20:16,325 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 427 selfloop transitions, 132 changer transitions 0/568 dead transitions. [2025-03-04 15:20:16,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 568 transitions, 10529 flow [2025-03-04 15:20:16,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 15:20:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-04 15:20:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 374 transitions. [2025-03-04 15:20:16,326 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5327635327635327 [2025-03-04 15:20:16,326 INFO L175 Difference]: Start difference. First operand has 311 places, 419 transitions, 7368 flow. Second operand 18 states and 374 transitions. [2025-03-04 15:20:16,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 568 transitions, 10529 flow [2025-03-04 15:20:16,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 568 transitions, 10402 flow, removed 35 selfloop flow, removed 2 redundant places. [2025-03-04 15:20:16,549 INFO L231 Difference]: Finished difference. Result has 336 places, 461 transitions, 8497 flow [2025-03-04 15:20:16,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7263, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8497, PETRI_PLACES=336, PETRI_TRANSITIONS=461} [2025-03-04 15:20:16,550 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 297 predicate places. [2025-03-04 15:20:16,550 INFO L471 AbstractCegarLoop]: Abstraction has has 336 places, 461 transitions, 8497 flow [2025-03-04 15:20:16,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:16,550 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:16,550 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:16,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-04 15:20:16,550 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:16,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:16,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1528348703, now seen corresponding path program 2 times [2025-03-04 15:20:16,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:16,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248986283] [2025-03-04 15:20:16,551 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:20:16,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:16,557 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-03-04 15:20:16,558 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-04 15:20:16,559 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:20:16,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:20:16,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:16,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248986283] [2025-03-04 15:20:16,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248986283] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:16,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:16,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:16,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978137298] [2025-03-04 15:20:16,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:16,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:20:16,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:16,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:20:16,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:20:16,666 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-04 15:20:16,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 461 transitions, 8497 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:16,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:16,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-04 15:20:16,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:17,690 INFO L124 PetriNetUnfolderBase]: 1638/3639 cut-off events. [2025-03-04 15:20:17,690 INFO L125 PetriNetUnfolderBase]: For 85624/85673 co-relation queries the response was YES. [2025-03-04 15:20:17,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27629 conditions, 3639 events. 1638/3639 cut-off events. For 85624/85673 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 25463 event pairs, 616 based on Foata normal form. 29/3664 useless extension candidates. Maximal degree in co-relation 27369. Up to 1795 conditions per place. [2025-03-04 15:20:17,728 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 427 selfloop transitions, 186 changer transitions 0/623 dead transitions. [2025-03-04 15:20:17,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 623 transitions, 12078 flow [2025-03-04 15:20:17,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 15:20:17,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-04 15:20:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 315 transitions. [2025-03-04 15:20:17,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2025-03-04 15:20:17,730 INFO L175 Difference]: Start difference. First operand has 336 places, 461 transitions, 8497 flow. Second operand 15 states and 315 transitions. [2025-03-04 15:20:17,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 623 transitions, 12078 flow [2025-03-04 15:20:18,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 623 transitions, 11805 flow, removed 88 selfloop flow, removed 2 redundant places. [2025-03-04 15:20:18,030 INFO L231 Difference]: Finished difference. Result has 356 places, 499 transitions, 9553 flow [2025-03-04 15:20:18,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8261, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9553, PETRI_PLACES=356, PETRI_TRANSITIONS=499} [2025-03-04 15:20:18,031 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 317 predicate places. [2025-03-04 15:20:18,031 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 499 transitions, 9553 flow [2025-03-04 15:20:18,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:18,032 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:18,032 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:18,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-04 15:20:18,032 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:18,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:18,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1944804069, now seen corresponding path program 3 times [2025-03-04 15:20:18,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:18,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002179305] [2025-03-04 15:20:18,033 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:20:18,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:18,039 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 11 equivalence classes. [2025-03-04 15:20:18,040 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-04 15:20:18,040 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 15:20:18,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:20:18,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:18,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002179305] [2025-03-04 15:20:18,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002179305] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:18,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:18,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:18,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048170922] [2025-03-04 15:20:18,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:18,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:20:18,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:18,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:20:18,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:20:18,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-04 15:20:18,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 499 transitions, 9553 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:18,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:18,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-04 15:20:18,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:19,249 INFO L124 PetriNetUnfolderBase]: 1742/3855 cut-off events. [2025-03-04 15:20:19,249 INFO L125 PetriNetUnfolderBase]: For 103373/103423 co-relation queries the response was YES. [2025-03-04 15:20:19,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30768 conditions, 3855 events. 1742/3855 cut-off events. For 103373/103423 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 27278 event pairs, 649 based on Foata normal form. 30/3882 useless extension candidates. Maximal degree in co-relation 30500. Up to 1795 conditions per place. [2025-03-04 15:20:19,297 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 489 selfloop transitions, 158 changer transitions 0/657 dead transitions. [2025-03-04 15:20:19,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 657 transitions, 13305 flow [2025-03-04 15:20:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 15:20:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-04 15:20:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 366 transitions. [2025-03-04 15:20:19,298 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5213675213675214 [2025-03-04 15:20:19,298 INFO L175 Difference]: Start difference. First operand has 356 places, 499 transitions, 9553 flow. Second operand 18 states and 366 transitions. [2025-03-04 15:20:19,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 657 transitions, 13305 flow [2025-03-04 15:20:19,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 657 transitions, 12942 flow, removed 70 selfloop flow, removed 3 redundant places. [2025-03-04 15:20:19,640 INFO L231 Difference]: Finished difference. Result has 381 places, 540 transitions, 10643 flow [2025-03-04 15:20:19,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9214, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10643, PETRI_PLACES=381, PETRI_TRANSITIONS=540} [2025-03-04 15:20:19,640 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 342 predicate places. [2025-03-04 15:20:19,641 INFO L471 AbstractCegarLoop]: Abstraction has has 381 places, 540 transitions, 10643 flow [2025-03-04 15:20:19,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:19,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:19,641 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:19,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-04 15:20:19,641 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:19,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:19,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1146101489, now seen corresponding path program 4 times [2025-03-04 15:20:19,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:19,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506939879] [2025-03-04 15:20:19,641 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:20:19,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:19,647 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-03-04 15:20:19,652 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-04 15:20:19,652 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:20:19,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:19,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:19,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506939879] [2025-03-04 15:20:19,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506939879] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:19,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:19,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:19,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392568760] [2025-03-04 15:20:19,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:19,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 15:20:19,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:19,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 15:20:19,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-04 15:20:19,912 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2025-03-04 15:20:19,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 540 transitions, 10643 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:19,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:19,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2025-03-04 15:20:19,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:21,060 INFO L124 PetriNetUnfolderBase]: 1683/3800 cut-off events. [2025-03-04 15:20:21,060 INFO L125 PetriNetUnfolderBase]: For 122343/122381 co-relation queries the response was YES. [2025-03-04 15:20:21,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32499 conditions, 3800 events. 1683/3800 cut-off events. For 122343/122381 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 27821 event pairs, 495 based on Foata normal form. 28/3827 useless extension candidates. Maximal degree in co-relation 32220. Up to 2475 conditions per place. [2025-03-04 15:20:21,110 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 585 selfloop transitions, 138 changer transitions 0/737 dead transitions. [2025-03-04 15:20:21,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 737 transitions, 15742 flow [2025-03-04 15:20:21,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-04 15:20:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-04 15:20:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 351 transitions. [2025-03-04 15:20:21,112 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2025-03-04 15:20:21,112 INFO L175 Difference]: Start difference. First operand has 381 places, 540 transitions, 10643 flow. Second operand 17 states and 351 transitions. [2025-03-04 15:20:21,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 737 transitions, 15742 flow [2025-03-04 15:20:21,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 737 transitions, 15391 flow, removed 112 selfloop flow, removed 2 redundant places. [2025-03-04 15:20:21,576 INFO L231 Difference]: Finished difference. Result has 404 places, 593 transitions, 12200 flow [2025-03-04 15:20:21,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10338, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12200, PETRI_PLACES=404, PETRI_TRANSITIONS=593} [2025-03-04 15:20:21,577 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 365 predicate places. [2025-03-04 15:20:21,577 INFO L471 AbstractCegarLoop]: Abstraction has has 404 places, 593 transitions, 12200 flow [2025-03-04 15:20:21,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:21,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:21,577 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:21,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-04 15:20:21,577 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:21,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:21,578 INFO L85 PathProgramCache]: Analyzing trace with hash -816659037, now seen corresponding path program 5 times [2025-03-04 15:20:21,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:21,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516031246] [2025-03-04 15:20:21,578 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:20:21,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:21,584 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 11 equivalence classes. [2025-03-04 15:20:21,591 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 45 of 45 statements. [2025-03-04 15:20:21,591 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-04 15:20:21,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:21,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:21,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516031246] [2025-03-04 15:20:21,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516031246] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:21,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:21,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:21,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389457866] [2025-03-04 15:20:21,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:21,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 15:20:21,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:21,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 15:20:21,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-04 15:20:21,907 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2025-03-04 15:20:21,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 593 transitions, 12200 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:21,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:21,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2025-03-04 15:20:21,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:23,365 INFO L124 PetriNetUnfolderBase]: 1814/4067 cut-off events. [2025-03-04 15:20:23,365 INFO L125 PetriNetUnfolderBase]: For 145412/145451 co-relation queries the response was YES. [2025-03-04 15:20:23,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36130 conditions, 4067 events. 1814/4067 cut-off events. For 145412/145451 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 30175 event pairs, 542 based on Foata normal form. 31/4097 useless extension candidates. Maximal degree in co-relation 35841. Up to 2923 conditions per place. [2025-03-04 15:20:23,421 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 626 selfloop transitions, 83 changer transitions 0/723 dead transitions. [2025-03-04 15:20:23,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 723 transitions, 15865 flow [2025-03-04 15:20:23,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 15:20:23,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-04 15:20:23,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 257 transitions. [2025-03-04 15:20:23,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5069033530571992 [2025-03-04 15:20:23,423 INFO L175 Difference]: Start difference. First operand has 404 places, 593 transitions, 12200 flow. Second operand 13 states and 257 transitions. [2025-03-04 15:20:23,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 723 transitions, 15865 flow [2025-03-04 15:20:24,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 723 transitions, 15520 flow, removed 169 selfloop flow, removed 1 redundant places. [2025-03-04 15:20:24,035 INFO L231 Difference]: Finished difference. Result has 423 places, 617 transitions, 12812 flow [2025-03-04 15:20:24,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11860, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12812, PETRI_PLACES=423, PETRI_TRANSITIONS=617} [2025-03-04 15:20:24,036 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 384 predicate places. [2025-03-04 15:20:24,036 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 617 transitions, 12812 flow [2025-03-04 15:20:24,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:24,036 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:24,036 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:24,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-04 15:20:24,036 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:24,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:24,037 INFO L85 PathProgramCache]: Analyzing trace with hash 11365961, now seen corresponding path program 4 times [2025-03-04 15:20:24,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:24,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25340862] [2025-03-04 15:20:24,037 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:20:24,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:24,043 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-03-04 15:20:24,048 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-04 15:20:24,048 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:20:24,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:24,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:24,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25340862] [2025-03-04 15:20:24,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25340862] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:24,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:24,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:24,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196774975] [2025-03-04 15:20:24,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:24,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 15:20:24,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:24,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 15:20:24,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-04 15:20:24,231 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-04 15:20:24,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 617 transitions, 12812 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:24,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:24,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-04 15:20:24,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:25,897 INFO L124 PetriNetUnfolderBase]: 2096/4591 cut-off events. [2025-03-04 15:20:25,897 INFO L125 PetriNetUnfolderBase]: For 167605/167662 co-relation queries the response was YES. [2025-03-04 15:20:25,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40846 conditions, 4591 events. 2096/4591 cut-off events. For 167605/167662 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 33955 event pairs, 723 based on Foata normal form. 33/4624 useless extension candidates. Maximal degree in co-relation 40548. Up to 1802 conditions per place. [2025-03-04 15:20:25,966 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 602 selfloop transitions, 155 changer transitions 0/768 dead transitions. [2025-03-04 15:20:25,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 768 transitions, 17131 flow [2025-03-04 15:20:25,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-04 15:20:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-04 15:20:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 377 transitions. [2025-03-04 15:20:25,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2025-03-04 15:20:25,967 INFO L175 Difference]: Start difference. First operand has 423 places, 617 transitions, 12812 flow. Second operand 19 states and 377 transitions. [2025-03-04 15:20:25,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 768 transitions, 17131 flow [2025-03-04 15:20:26,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 768 transitions, 16848 flow, removed 100 selfloop flow, removed 4 redundant places. [2025-03-04 15:20:26,679 INFO L231 Difference]: Finished difference. Result has 448 places, 652 transitions, 14017 flow [2025-03-04 15:20:26,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12594, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=14017, PETRI_PLACES=448, PETRI_TRANSITIONS=652} [2025-03-04 15:20:26,680 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 409 predicate places. [2025-03-04 15:20:26,680 INFO L471 AbstractCegarLoop]: Abstraction has has 448 places, 652 transitions, 14017 flow [2025-03-04 15:20:26,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:26,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:26,680 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:26,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-04 15:20:26,680 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:26,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:26,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1683896761, now seen corresponding path program 5 times [2025-03-04 15:20:26,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:26,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274033943] [2025-03-04 15:20:26,681 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:20:26,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:26,687 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 11 equivalence classes. [2025-03-04 15:20:26,697 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 45 of 45 statements. [2025-03-04 15:20:26,697 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-04 15:20:26,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:26,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:26,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274033943] [2025-03-04 15:20:26,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274033943] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:26,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:26,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:26,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649183805] [2025-03-04 15:20:26,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:26,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 15:20:26,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:26,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 15:20:26,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-03-04 15:20:26,931 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2025-03-04 15:20:26,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 652 transitions, 14017 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:26,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:26,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2025-03-04 15:20:26,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:28,356 INFO L124 PetriNetUnfolderBase]: 2056/4593 cut-off events. [2025-03-04 15:20:28,357 INFO L125 PetriNetUnfolderBase]: For 203711/203763 co-relation queries the response was YES. [2025-03-04 15:20:28,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43687 conditions, 4593 events. 2056/4593 cut-off events. For 203711/203763 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 35119 event pairs, 550 based on Foata normal form. 44/4637 useless extension candidates. Maximal degree in co-relation 43377. Up to 3119 conditions per place. [2025-03-04 15:20:28,427 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 665 selfloop transitions, 123 changer transitions 0/803 dead transitions. [2025-03-04 15:20:28,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 803 transitions, 18353 flow [2025-03-04 15:20:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 15:20:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-04 15:20:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 262 transitions. [2025-03-04 15:20:28,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5167652859960552 [2025-03-04 15:20:28,428 INFO L175 Difference]: Start difference. First operand has 448 places, 652 transitions, 14017 flow. Second operand 13 states and 262 transitions. [2025-03-04 15:20:28,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 803 transitions, 18353 flow [2025-03-04 15:20:29,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 803 transitions, 18085 flow, removed 112 selfloop flow, removed 3 redundant places. [2025-03-04 15:20:29,275 INFO L231 Difference]: Finished difference. Result has 465 places, 705 transitions, 15435 flow [2025-03-04 15:20:29,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=13752, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15435, PETRI_PLACES=465, PETRI_TRANSITIONS=705} [2025-03-04 15:20:29,276 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 426 predicate places. [2025-03-04 15:20:29,276 INFO L471 AbstractCegarLoop]: Abstraction has has 465 places, 705 transitions, 15435 flow [2025-03-04 15:20:29,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:29,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:29,276 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:29,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-04 15:20:29,276 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:29,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:29,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1973841045, now seen corresponding path program 6 times [2025-03-04 15:20:29,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:29,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868877020] [2025-03-04 15:20:29,277 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 15:20:29,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:29,283 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 11 equivalence classes. [2025-03-04 15:20:29,285 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-04 15:20:29,285 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-04 15:20:29,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:20:29,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:29,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868877020] [2025-03-04 15:20:29,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868877020] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:29,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:29,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:29,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928346668] [2025-03-04 15:20:29,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:29,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:20:29,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:29,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:20:29,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:20:29,386 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-04 15:20:29,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 705 transitions, 15435 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:29,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:29,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-04 15:20:29,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:31,482 INFO L124 PetriNetUnfolderBase]: 2409/5231 cut-off events. [2025-03-04 15:20:31,482 INFO L125 PetriNetUnfolderBase]: For 247097/247185 co-relation queries the response was YES. [2025-03-04 15:20:31,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50919 conditions, 5231 events. 2409/5231 cut-off events. For 247097/247185 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 39444 event pairs, 874 based on Foata normal form. 39/5270 useless extension candidates. Maximal degree in co-relation 50601. Up to 2018 conditions per place. [2025-03-04 15:20:31,580 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 551 selfloop transitions, 302 changer transitions 0/864 dead transitions. [2025-03-04 15:20:31,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 864 transitions, 20328 flow [2025-03-04 15:20:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 15:20:31,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-04 15:20:31,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 359 transitions. [2025-03-04 15:20:31,581 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113960113960114 [2025-03-04 15:20:31,581 INFO L175 Difference]: Start difference. First operand has 465 places, 705 transitions, 15435 flow. Second operand 18 states and 359 transitions. [2025-03-04 15:20:31,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 864 transitions, 20328 flow [2025-03-04 15:20:32,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 864 transitions, 20097 flow, removed 102 selfloop flow, removed 2 redundant places. [2025-03-04 15:20:32,891 INFO L231 Difference]: Finished difference. Result has 492 places, 759 transitions, 17713 flow [2025-03-04 15:20:32,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=15226, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=17713, PETRI_PLACES=492, PETRI_TRANSITIONS=759} [2025-03-04 15:20:32,892 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 453 predicate places. [2025-03-04 15:20:32,892 INFO L471 AbstractCegarLoop]: Abstraction has has 492 places, 759 transitions, 17713 flow [2025-03-04 15:20:32,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:32,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:32,892 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:32,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-03-04 15:20:32,893 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:32,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:32,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1674876043, now seen corresponding path program 7 times [2025-03-04 15:20:32,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:32,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392879864] [2025-03-04 15:20:32,894 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 15:20:32,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:32,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-04 15:20:32,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-04 15:20:32,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:32,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:33,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:33,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392879864] [2025-03-04 15:20:33,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392879864] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:33,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:33,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:33,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651036644] [2025-03-04 15:20:33,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:33,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 15:20:33,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:33,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 15:20:33,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-04 15:20:33,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-04 15:20:33,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 759 transitions, 17713 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:33,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:33,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-04 15:20:33,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:35,160 INFO L124 PetriNetUnfolderBase]: 2501/5434 cut-off events. [2025-03-04 15:20:35,160 INFO L125 PetriNetUnfolderBase]: For 306173/306252 co-relation queries the response was YES. [2025-03-04 15:20:35,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55887 conditions, 5434 events. 2501/5434 cut-off events. For 306173/306252 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 41530 event pairs, 888 based on Foata normal form. 37/5471 useless extension candidates. Maximal degree in co-relation 55558. Up to 2089 conditions per place. [2025-03-04 15:20:35,251 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 743 selfloop transitions, 151 changer transitions 0/905 dead transitions. [2025-03-04 15:20:35,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 905 transitions, 22557 flow [2025-03-04 15:20:35,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 15:20:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-04 15:20:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 370 transitions. [2025-03-04 15:20:35,252 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5270655270655271 [2025-03-04 15:20:35,252 INFO L175 Difference]: Start difference. First operand has 492 places, 759 transitions, 17713 flow. Second operand 18 states and 370 transitions. [2025-03-04 15:20:35,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 905 transitions, 22557 flow [2025-03-04 15:20:36,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 905 transitions, 22221 flow, removed 151 selfloop flow, removed 1 redundant places. [2025-03-04 15:20:36,842 INFO L231 Difference]: Finished difference. Result has 519 places, 788 transitions, 18860 flow [2025-03-04 15:20:36,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=17378, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=18860, PETRI_PLACES=519, PETRI_TRANSITIONS=788} [2025-03-04 15:20:36,843 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 480 predicate places. [2025-03-04 15:20:36,844 INFO L471 AbstractCegarLoop]: Abstraction has has 519 places, 788 transitions, 18860 flow [2025-03-04 15:20:36,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:36,844 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:36,844 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:36,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-03-04 15:20:36,844 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:36,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:36,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1607683601, now seen corresponding path program 8 times [2025-03-04 15:20:36,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:36,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797181018] [2025-03-04 15:20:36,845 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:20:36,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:36,854 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-03-04 15:20:36,855 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-04 15:20:36,855 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:20:36,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:20:36,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:36,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797181018] [2025-03-04 15:20:36,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797181018] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:36,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:36,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:36,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418738867] [2025-03-04 15:20:36,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:36,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:20:36,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:36,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:20:36,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:20:36,949 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-04 15:20:36,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 788 transitions, 18860 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:36,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:36,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-04 15:20:36,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:39,411 INFO L124 PetriNetUnfolderBase]: 2669/5751 cut-off events. [2025-03-04 15:20:39,411 INFO L125 PetriNetUnfolderBase]: For 380569/380659 co-relation queries the response was YES. [2025-03-04 15:20:39,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62115 conditions, 5751 events. 2669/5751 cut-off events. For 380569/380659 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 44528 event pairs, 794 based on Foata normal form. 39/5788 useless extension candidates. Maximal degree in co-relation 61773. Up to 2319 conditions per place. [2025-03-04 15:20:39,524 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 604 selfloop transitions, 386 changer transitions 0/1001 dead transitions. [2025-03-04 15:20:39,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 1001 transitions, 25435 flow [2025-03-04 15:20:39,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-04 15:20:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-03-04 15:20:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 445 transitions. [2025-03-04 15:20:39,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.496098104793757 [2025-03-04 15:20:39,525 INFO L175 Difference]: Start difference. First operand has 519 places, 788 transitions, 18860 flow. Second operand 23 states and 445 transitions. [2025-03-04 15:20:39,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 1001 transitions, 25435 flow [2025-03-04 15:20:41,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 1001 transitions, 24965 flow, removed 174 selfloop flow, removed 4 redundant places. [2025-03-04 15:20:41,358 INFO L231 Difference]: Finished difference. Result has 554 places, 849 transitions, 21808 flow [2025-03-04 15:20:41,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18411, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=21808, PETRI_PLACES=554, PETRI_TRANSITIONS=849} [2025-03-04 15:20:41,359 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 515 predicate places. [2025-03-04 15:20:41,359 INFO L471 AbstractCegarLoop]: Abstraction has has 554 places, 849 transitions, 21808 flow [2025-03-04 15:20:41,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:41,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:41,359 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:41,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-03-04 15:20:41,359 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:41,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:41,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1954922583, now seen corresponding path program 9 times [2025-03-04 15:20:41,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:41,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605589798] [2025-03-04 15:20:41,360 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:20:41,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:41,368 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 11 equivalence classes. [2025-03-04 15:20:41,370 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-04 15:20:41,370 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 15:20:41,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:20:41,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:41,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605589798] [2025-03-04 15:20:41,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605589798] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:41,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:41,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:41,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524517458] [2025-03-04 15:20:41,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:41,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:20:41,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:41,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:20:41,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:20:41,465 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-04 15:20:41,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 849 transitions, 21808 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:41,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:41,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-04 15:20:41,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:43,919 INFO L124 PetriNetUnfolderBase]: 2771/5983 cut-off events. [2025-03-04 15:20:43,919 INFO L125 PetriNetUnfolderBase]: For 460620/460705 co-relation queries the response was YES. [2025-03-04 15:20:44,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68368 conditions, 5983 events. 2771/5983 cut-off events. For 460620/460705 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 46475 event pairs, 984 based on Foata normal form. 37/6020 useless extension candidates. Maximal degree in co-relation 68013. Up to 2488 conditions per place. [2025-03-04 15:20:44,041 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 789 selfloop transitions, 210 changer transitions 0/1010 dead transitions. [2025-03-04 15:20:44,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 1010 transitions, 27710 flow [2025-03-04 15:20:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-04 15:20:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-04 15:20:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 347 transitions. [2025-03-04 15:20:44,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5233785822021116 [2025-03-04 15:20:44,042 INFO L175 Difference]: Start difference. First operand has 554 places, 849 transitions, 21808 flow. Second operand 17 states and 347 transitions. [2025-03-04 15:20:44,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 1010 transitions, 27710 flow [2025-03-04 15:20:46,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 1010 transitions, 26959 flow, removed 309 selfloop flow, removed 3 redundant places. [2025-03-04 15:20:46,742 INFO L231 Difference]: Finished difference. Result has 579 places, 895 transitions, 23695 flow [2025-03-04 15:20:46,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=21072, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=23695, PETRI_PLACES=579, PETRI_TRANSITIONS=895} [2025-03-04 15:20:46,743 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 540 predicate places. [2025-03-04 15:20:46,743 INFO L471 AbstractCegarLoop]: Abstraction has has 579 places, 895 transitions, 23695 flow [2025-03-04 15:20:46,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:46,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:46,743 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:46,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-03-04 15:20:46,743 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:46,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:46,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1366001007, now seen corresponding path program 10 times [2025-03-04 15:20:46,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:46,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941913539] [2025-03-04 15:20:46,744 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:20:46,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:46,750 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-03-04 15:20:46,753 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-04 15:20:46,753 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:20:46,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:46,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:46,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941913539] [2025-03-04 15:20:46,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941913539] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:46,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:46,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:46,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278671387] [2025-03-04 15:20:46,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:46,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 15:20:46,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:46,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 15:20:46,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-04 15:20:46,918 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-04 15:20:46,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 895 transitions, 23695 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:46,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:46,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-04 15:20:46,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:49,640 INFO L124 PetriNetUnfolderBase]: 2864/6160 cut-off events. [2025-03-04 15:20:49,640 INFO L125 PetriNetUnfolderBase]: For 528568/528678 co-relation queries the response was YES. [2025-03-04 15:20:49,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72627 conditions, 6160 events. 2864/6160 cut-off events. For 528568/528678 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 48005 event pairs, 1053 based on Foata normal form. 41/6201 useless extension candidates. Maximal degree in co-relation 72261. Up to 2676 conditions per place. [2025-03-04 15:20:49,762 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 725 selfloop transitions, 277 changer transitions 0/1013 dead transitions. [2025-03-04 15:20:49,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 1013 transitions, 28468 flow [2025-03-04 15:20:49,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-04 15:20:49,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-04 15:20:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 348 transitions. [2025-03-04 15:20:49,763 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5248868778280543 [2025-03-04 15:20:49,763 INFO L175 Difference]: Start difference. First operand has 579 places, 895 transitions, 23695 flow. Second operand 17 states and 348 transitions. [2025-03-04 15:20:49,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 1013 transitions, 28468 flow [2025-03-04 15:20:52,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 1013 transitions, 27960 flow, removed 254 selfloop flow, removed 0 redundant places. [2025-03-04 15:20:52,871 INFO L231 Difference]: Finished difference. Result has 606 places, 924 transitions, 25201 flow [2025-03-04 15:20:52,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=23195, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=895, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=25201, PETRI_PLACES=606, PETRI_TRANSITIONS=924} [2025-03-04 15:20:52,872 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 567 predicate places. [2025-03-04 15:20:52,872 INFO L471 AbstractCegarLoop]: Abstraction has has 606 places, 924 transitions, 25201 flow [2025-03-04 15:20:52,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:52,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:52,872 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:52,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-03-04 15:20:52,872 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:52,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:52,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1702815223, now seen corresponding path program 11 times [2025-03-04 15:20:52,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:52,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969766690] [2025-03-04 15:20:52,874 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:20:52,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:52,883 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 11 equivalence classes. [2025-03-04 15:20:52,892 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 45 of 45 statements. [2025-03-04 15:20:52,892 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-04 15:20:52,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:20:53,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:53,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969766690] [2025-03-04 15:20:53,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969766690] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:53,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:53,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:53,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941641128] [2025-03-04 15:20:53,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:53,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 15:20:53,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:53,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 15:20:53,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-04 15:20:53,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-04 15:20:53,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 924 transitions, 25201 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:53,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:53,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-04 15:20:53,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:55,916 INFO L124 PetriNetUnfolderBase]: 2956/6337 cut-off events. [2025-03-04 15:20:55,916 INFO L125 PetriNetUnfolderBase]: For 607613/607719 co-relation queries the response was YES. [2025-03-04 15:20:56,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77099 conditions, 6337 events. 2956/6337 cut-off events. For 607613/607719 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 49560 event pairs, 1102 based on Foata normal form. 40/6377 useless extension candidates. Maximal degree in co-relation 76720. Up to 2770 conditions per place. [2025-03-04 15:20:56,039 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 826 selfloop transitions, 215 changer transitions 0/1052 dead transitions. [2025-03-04 15:20:56,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 1052 transitions, 30368 flow [2025-03-04 15:20:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 15:20:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-04 15:20:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 352 transitions. [2025-03-04 15:20:56,040 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5014245014245015 [2025-03-04 15:20:56,040 INFO L175 Difference]: Start difference. First operand has 606 places, 924 transitions, 25201 flow. Second operand 18 states and 352 transitions. [2025-03-04 15:20:56,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 1052 transitions, 30368 flow [2025-03-04 15:20:59,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 1052 transitions, 29755 flow, removed 197 selfloop flow, removed 4 redundant places. [2025-03-04 15:20:59,239 INFO L231 Difference]: Finished difference. Result has 629 places, 947 transitions, 26432 flow [2025-03-04 15:20:59,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=24598, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=719, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=26432, PETRI_PLACES=629, PETRI_TRANSITIONS=947} [2025-03-04 15:20:59,240 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 590 predicate places. [2025-03-04 15:20:59,240 INFO L471 AbstractCegarLoop]: Abstraction has has 629 places, 947 transitions, 26432 flow [2025-03-04 15:20:59,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:59,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:59,240 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:59,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-03-04 15:20:59,240 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:20:59,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:59,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1979477187, now seen corresponding path program 6 times [2025-03-04 15:20:59,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:59,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766943328] [2025-03-04 15:20:59,241 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 15:20:59,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:59,248 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 11 equivalence classes. [2025-03-04 15:20:59,249 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-04 15:20:59,249 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-04 15:20:59,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:59,321 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:20:59,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:59,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766943328] [2025-03-04 15:20:59,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766943328] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:59,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:59,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:20:59,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531632246] [2025-03-04 15:20:59,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:59,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:20:59,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:59,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:20:59,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:20:59,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-04 15:20:59,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 947 transitions, 26432 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:59,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:59,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-04 15:20:59,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:21:02,336 INFO L124 PetriNetUnfolderBase]: 3307/7080 cut-off events. [2025-03-04 15:21:02,336 INFO L125 PetriNetUnfolderBase]: For 666485/666597 co-relation queries the response was YES. [2025-03-04 15:21:02,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84133 conditions, 7080 events. 3307/7080 cut-off events. For 666485/666597 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 56236 event pairs, 1228 based on Foata normal form. 37/7115 useless extension candidates. Maximal degree in co-relation 83743. Up to 3234 conditions per place. [2025-03-04 15:21:02,698 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 862 selfloop transitions, 297 changer transitions 0/1176 dead transitions. [2025-03-04 15:21:02,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 1176 transitions, 34608 flow [2025-03-04 15:21:02,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-04 15:21:02,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-04 15:21:02,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 345 transitions. [2025-03-04 15:21:02,700 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5203619909502263 [2025-03-04 15:21:02,700 INFO L175 Difference]: Start difference. First operand has 629 places, 947 transitions, 26432 flow. Second operand 17 states and 345 transitions. [2025-03-04 15:21:02,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 1176 transitions, 34608 flow [2025-03-04 15:21:07,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 1176 transitions, 34001 flow, removed 258 selfloop flow, removed 3 redundant places. [2025-03-04 15:21:07,345 INFO L231 Difference]: Finished difference. Result has 654 places, 1036 transitions, 29348 flow [2025-03-04 15:21:07,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=25926, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=29348, PETRI_PLACES=654, PETRI_TRANSITIONS=1036} [2025-03-04 15:21:07,347 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 615 predicate places. [2025-03-04 15:21:07,347 INFO L471 AbstractCegarLoop]: Abstraction has has 654 places, 1036 transitions, 29348 flow [2025-03-04 15:21:07,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:21:07,347 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:21:07,347 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:21:07,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2025-03-04 15:21:07,348 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:21:07,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:21:07,349 INFO L85 PathProgramCache]: Analyzing trace with hash -107686875, now seen corresponding path program 12 times [2025-03-04 15:21:07,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:21:07,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584456546] [2025-03-04 15:21:07,349 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 15:21:07,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:21:07,356 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 11 equivalence classes. [2025-03-04 15:21:07,358 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-04 15:21:07,358 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-04 15:21:07,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:21:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-04 15:21:07,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:21:07,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584456546] [2025-03-04 15:21:07,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584456546] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:21:07,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:21:07,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:21:07,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267047492] [2025-03-04 15:21:07,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:21:07,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:21:07,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:21:07,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:21:07,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:21:07,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-04 15:21:07,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 1036 transitions, 29348 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:21:07,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:21:07,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-04 15:21:07,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:21:11,216 INFO L124 PetriNetUnfolderBase]: 3366/7180 cut-off events. [2025-03-04 15:21:11,216 INFO L125 PetriNetUnfolderBase]: For 803032/803181 co-relation queries the response was YES. [2025-03-04 15:21:11,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93198 conditions, 7180 events. 3366/7180 cut-off events. For 803032/803181 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 57683 event pairs, 860 based on Foata normal form. 76/7255 useless extension candidates. Maximal degree in co-relation 92798. Up to 2968 conditions per place. [2025-03-04 15:21:11,419 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 762 selfloop transitions, 513 changer transitions 0/1287 dead transitions. [2025-03-04 15:21:11,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 1287 transitions, 38769 flow [2025-03-04 15:21:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-04 15:21:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-04 15:21:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 414 transitions. [2025-03-04 15:21:11,420 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2025-03-04 15:21:11,420 INFO L175 Difference]: Start difference. First operand has 654 places, 1036 transitions, 29348 flow. Second operand 21 states and 414 transitions. [2025-03-04 15:21:11,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 1287 transitions, 38769 flow [2025-03-04 15:21:16,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 1287 transitions, 38178 flow, removed 158 selfloop flow, removed 2 redundant places. [2025-03-04 15:21:16,369 INFO L231 Difference]: Finished difference. Result has 685 places, 1105 transitions, 33419 flow [2025-03-04 15:21:16,370 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=28883, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=450, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=33419, PETRI_PLACES=685, PETRI_TRANSITIONS=1105} [2025-03-04 15:21:16,370 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 646 predicate places. [2025-03-04 15:21:16,370 INFO L471 AbstractCegarLoop]: Abstraction has has 685 places, 1105 transitions, 33419 flow [2025-03-04 15:21:16,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:21:16,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:21:16,370 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:21:16,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-03-04 15:21:16,370 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-04 15:21:16,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:21:16,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2011690259, now seen corresponding path program 13 times [2025-03-04 15:21:16,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:21:16,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027906421] [2025-03-04 15:21:16,371 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 15:21:16,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:21:16,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-04 15:21:16,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-04 15:21:16,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:21:16,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:21:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:21:16,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:21:16,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027906421] [2025-03-04 15:21:16,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027906421] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:21:16,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:21:16,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:21:16,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788965767] [2025-03-04 15:21:16,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:21:16,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 15:21:16,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:21:16,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 15:21:16,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-03-04 15:21:16,622 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2025-03-04 15:21:16,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 685 places, 1105 transitions, 33419 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:21:16,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:21:16,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2025-03-04 15:21:16,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:21:20,062 INFO L124 PetriNetUnfolderBase]: 3305/7175 cut-off events. [2025-03-04 15:21:20,062 INFO L125 PetriNetUnfolderBase]: For 914067/914168 co-relation queries the response was YES. [2025-03-04 15:21:20,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96941 conditions, 7175 events. 3305/7175 cut-off events. For 914067/914168 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 59278 event pairs, 773 based on Foata normal form. 44/7218 useless extension candidates. Maximal degree in co-relation 96528. Up to 4974 conditions per place. [2025-03-04 15:21:20,267 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1087 selfloop transitions, 156 changer transitions 0/1265 dead transitions. [2025-03-04 15:21:20,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 697 places, 1265 transitions, 40128 flow [2025-03-04 15:21:20,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 15:21:20,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-04 15:21:20,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 264 transitions. [2025-03-04 15:21:20,269 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5207100591715976 [2025-03-04 15:21:20,269 INFO L175 Difference]: Start difference. First operand has 685 places, 1105 transitions, 33419 flow. Second operand 13 states and 264 transitions. [2025-03-04 15:21:20,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 697 places, 1265 transitions, 40128 flow