./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.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 a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:33:22,611 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:33:22,664 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:33:22,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:33:22,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:33:22,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:33:22,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:33:22,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:33:22,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:33:22,696 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:33:22,697 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:33:22,697 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:33:22,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:33:22,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:33:22,697 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:33:22,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:33:22,698 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:33:22,698 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:33:22,698 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:33:22,698 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:33:22,698 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:33:22,698 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:33:22,698 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:33:22,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:33:22,698 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:33:22,699 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:33:22,699 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:33:22,699 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:33:22,699 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:33:22,699 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:33:22,699 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:33:22,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:33:22,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:33:22,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:33:22,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:33:22,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:33:22,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:33:22,700 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:33:22,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:33:22,700 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:33:22,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:33:22,700 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:33:22,700 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:33:22,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:33:22,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:33:22,701 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 -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb [2025-03-09 06:33:22,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:33:22,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:33:22,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:33:22,937 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:33:22,938 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:33:22,940 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2025-03-09 06:33:24,028 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f8a06ce1/98e98d54cdbd402f831f00bf43ac2cd0/FLAGb300669a1 [2025-03-09 06:33:24,273 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:33:24,274 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2025-03-09 06:33:24,284 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f8a06ce1/98e98d54cdbd402f831f00bf43ac2cd0/FLAGb300669a1 [2025-03-09 06:33:24,598 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f8a06ce1/98e98d54cdbd402f831f00bf43ac2cd0 [2025-03-09 06:33:24,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:33:24,601 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:33:24,602 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:33:24,602 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:33:24,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:33:24,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:33:24" (1/1) ... [2025-03-09 06:33:24,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e97e282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24, skipping insertion in model container [2025-03-09 06:33:24,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:33:24" (1/1) ... [2025-03-09 06:33:24,628 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:33:24,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:33:24,881 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:33:24,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:33:24,971 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:33:24,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24 WrapperNode [2025-03-09 06:33:24,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:33:24,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:33:24,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:33:24,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:33:24,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24" (1/1) ... [2025-03-09 06:33:24,997 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24" (1/1) ... [2025-03-09 06:33:25,021 INFO L138 Inliner]: procedures = 265, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 135 [2025-03-09 06:33:25,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:33:25,026 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:33:25,026 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:33:25,026 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:33:25,036 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24" (1/1) ... [2025-03-09 06:33:25,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24" (1/1) ... [2025-03-09 06:33:25,038 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24" (1/1) ... [2025-03-09 06:33:25,055 INFO L175 MemorySlicer]: Split 64 memory accesses to 1 slices as follows [64]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 2 writes are split as follows [2]. [2025-03-09 06:33:25,056 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24" (1/1) ... [2025-03-09 06:33:25,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24" (1/1) ... [2025-03-09 06:33:25,064 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24" (1/1) ... [2025-03-09 06:33:25,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24" (1/1) ... [2025-03-09 06:33:25,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24" (1/1) ... [2025-03-09 06:33:25,067 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24" (1/1) ... [2025-03-09 06:33:25,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:33:25,072 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:33:25,072 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:33:25,072 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:33:25,073 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24" (1/1) ... [2025-03-09 06:33:25,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:33:25,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:25,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:33:25,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:33:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-09 06:33:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:33:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:33:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-09 06:33:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:33:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-09 06:33:25,124 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-09 06:33:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:33:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:33:25,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:33:25,126 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:33:25,224 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:33:25,226 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:33:25,452 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:33:25,452 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:33:25,714 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:33:25,715 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:33:25,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:33:25 BoogieIcfgContainer [2025-03-09 06:33:25,717 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:33:25,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:33:25,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:33:25,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:33:25,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:33:24" (1/3) ... [2025-03-09 06:33:25,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2226e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:33:25, skipping insertion in model container [2025-03-09 06:33:25,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:24" (2/3) ... [2025-03-09 06:33:25,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2226e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:33:25, skipping insertion in model container [2025-03-09 06:33:25,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:33:25" (3/3) ... [2025-03-09 06:33:25,724 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2025-03-09 06:33:25,736 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:33:25,738 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_08-tricky_address3.i that has 2 procedures, 31 locations, 1 initial locations, 1 loop locations, and 8 error locations. [2025-03-09 06:33:25,738 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:33:25,783 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:33:25,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 66 flow [2025-03-09 06:33:25,835 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2025-03-09 06:33:25,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:33:25,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 1/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2025-03-09 06:33:25,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 31 transitions, 66 flow [2025-03-09 06:33:25,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 30 transitions, 63 flow [2025-03-09 06:33:25,851 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:33:25,862 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;@5339ba70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:33:25,863 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-09 06:33:25,867 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:33:25,867 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:33:25,868 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:33:25,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:25,869 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:33:25,869 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:25,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:25,874 INFO L85 PathProgramCache]: Analyzing trace with hash 324556, now seen corresponding path program 1 times [2025-03-09 06:33:25,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:25,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403119733] [2025-03-09 06:33:25,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:25,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:25,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:33:25,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:33:25,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:25,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:26,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:26,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403119733] [2025-03-09 06:33:26,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403119733] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:26,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:26,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:33:26,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450578193] [2025-03-09 06:33:26,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:26,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:33:26,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:26,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:33:26,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:33:26,156 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-03-09 06:33:26,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 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) [2025-03-09 06:33:26,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:26,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-03-09 06:33:26,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:26,266 INFO L124 PetriNetUnfolderBase]: 43/144 cut-off events. [2025-03-09 06:33:26,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:33:26,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 144 events. 43/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 541 event pairs, 42 based on Foata normal form. 1/129 useless extension candidates. Maximal degree in co-relation 230. Up to 105 conditions per place. [2025-03-09 06:33:26,270 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 19 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2025-03-09 06:33:26,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 111 flow [2025-03-09 06:33:26,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:33:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:33:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-03-09 06:33:26,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2025-03-09 06:33:26,283 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 63 flow. Second operand 4 states and 69 transitions. [2025-03-09 06:33:26,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 111 flow [2025-03-09 06:33:26,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:33:26,289 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2025-03-09 06:33:26,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2025-03-09 06:33:26,296 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2025-03-09 06:33:26,296 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2025-03-09 06:33:26,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 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) [2025-03-09 06:33:26,297 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:26,297 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:33:26,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:33:26,297 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:26,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:26,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1079195476, now seen corresponding path program 1 times [2025-03-09 06:33:26,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:26,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124257630] [2025-03-09 06:33:26,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:26,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:26,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:33:26,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:33:26,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:26,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:26,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:26,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:26,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124257630] [2025-03-09 06:33:26,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124257630] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:33:26,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649183988] [2025-03-09 06:33:26,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:26,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:26,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:26,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:33:26,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:33:26,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:33:26,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:33:26,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:26,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:26,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:33:26,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:33:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:26,609 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:33:26,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649183988] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:26,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:33:26,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:33:26,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655384430] [2025-03-09 06:33:26,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:26,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:33:26,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:26,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:33:26,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:33:26,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-03-09 06:33:26,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:26,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:26,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-03-09 06:33:26,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:26,741 INFO L124 PetriNetUnfolderBase]: 43/143 cut-off events. [2025-03-09 06:33:26,741 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:33:26,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 143 events. 43/143 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 536 event pairs, 42 based on Foata normal form. 1/128 useless extension candidates. Maximal degree in co-relation 247. Up to 100 conditions per place. [2025-03-09 06:33:26,744 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 15 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2025-03-09 06:33:26,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 124 flow [2025-03-09 06:33:26,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:33:26,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:33:26,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2025-03-09 06:33:26,748 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2025-03-09 06:33:26,748 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 6 states and 88 transitions. [2025-03-09 06:33:26,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 124 flow [2025-03-09 06:33:26,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:33:26,750 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 92 flow [2025-03-09 06:33:26,751 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2025-03-09 06:33:26,752 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2025-03-09 06:33:26,752 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 92 flow [2025-03-09 06:33:26,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:26,752 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:26,752 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:33:26,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 06:33:26,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:26,957 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:26,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:26,958 INFO L85 PathProgramCache]: Analyzing trace with hash -904678329, now seen corresponding path program 1 times [2025-03-09 06:33:26,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:26,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545876061] [2025-03-09 06:33:26,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:26,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:26,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:33:26,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:33:26,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:26,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:33:27,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:27,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545876061] [2025-03-09 06:33:27,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545876061] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:27,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:27,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:33:27,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016392650] [2025-03-09 06:33:27,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:27,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:33:27,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:27,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:33:27,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:33:27,034 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-03-09 06:33:27,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:27,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:27,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-03-09 06:33:27,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:27,082 INFO L124 PetriNetUnfolderBase]: 43/142 cut-off events. [2025-03-09 06:33:27,083 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 06:33:27,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 142 events. 43/142 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 530 event pairs, 42 based on Foata normal form. 1/128 useless extension candidates. Maximal degree in co-relation 243. Up to 103 conditions per place. [2025-03-09 06:33:27,084 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 16 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2025-03-09 06:33:27,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 30 transitions, 128 flow [2025-03-09 06:33:27,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:33:27,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:33:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2025-03-09 06:33:27,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2025-03-09 06:33:27,086 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 92 flow. Second operand 3 states and 52 transitions. [2025-03-09 06:33:27,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 30 transitions, 128 flow [2025-03-09 06:33:27,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 106 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-09 06:33:27,087 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 74 flow [2025-03-09 06:33:27,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2025-03-09 06:33:27,087 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2025-03-09 06:33:27,088 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 74 flow [2025-03-09 06:33:27,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:27,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:27,088 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:27,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:33:27,088 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:27,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:27,088 INFO L85 PathProgramCache]: Analyzing trace with hash -290035751, now seen corresponding path program 1 times [2025-03-09 06:33:27,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:27,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321969823] [2025-03-09 06:33:27,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:27,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:27,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:33:27,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:33:27,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:27,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:27,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:27,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321969823] [2025-03-09 06:33:27,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321969823] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:33:27,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751863263] [2025-03-09 06:33:27,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:27,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:27,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:27,165 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:33:27,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:33:27,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:33:27,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:33:27,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:27,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:27,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:33:27,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:33:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:27,242 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:33:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:27,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751863263] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:33:27,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:33:27,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-09 06:33:27,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925862361] [2025-03-09 06:33:27,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:33:27,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:27,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:27,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:27,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:27,279 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-03-09 06:33:27,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 74 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:27,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:27,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-03-09 06:33:27,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:27,368 INFO L124 PetriNetUnfolderBase]: 43/146 cut-off events. [2025-03-09 06:33:27,368 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-03-09 06:33:27,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 146 events. 43/146 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 527 event pairs, 42 based on Foata normal form. 2/134 useless extension candidates. Maximal degree in co-relation 236. Up to 101 conditions per place. [2025-03-09 06:33:27,369 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 16 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2025-03-09 06:33:27,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 135 flow [2025-03-09 06:33:27,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:33:27,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:33:27,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2025-03-09 06:33:27,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4700460829493088 [2025-03-09 06:33:27,370 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 74 flow. Second operand 7 states and 102 transitions. [2025-03-09 06:33:27,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 135 flow [2025-03-09 06:33:27,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 121 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:27,371 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 100 flow [2025-03-09 06:33:27,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2025-03-09 06:33:27,372 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2025-03-09 06:33:27,372 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 100 flow [2025-03-09 06:33:27,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:27,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:27,372 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:27,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:33:27,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-09 06:33:27,573 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:27,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:27,573 INFO L85 PathProgramCache]: Analyzing trace with hash 605820121, now seen corresponding path program 2 times [2025-03-09 06:33:27,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:27,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209544327] [2025-03-09 06:33:27,574 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:27,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:27,587 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:33:27,592 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 16 statements. [2025-03-09 06:33:27,592 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:27,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-09 06:33:27,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:27,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209544327] [2025-03-09 06:33:27,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209544327] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:27,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:27,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:33:27,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893381486] [2025-03-09 06:33:27,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:27,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:33:27,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:27,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:33:27,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:33:27,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-03-09 06:33:27,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:27,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:27,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-03-09 06:33:27,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:27,717 INFO L124 PetriNetUnfolderBase]: 49/145 cut-off events. [2025-03-09 06:33:27,717 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-03-09 06:33:27,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 145 events. 49/145 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 489 event pairs, 15 based on Foata normal form. 7/140 useless extension candidates. Maximal degree in co-relation 250. Up to 78 conditions per place. [2025-03-09 06:33:27,718 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 33 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2025-03-09 06:33:27,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 194 flow [2025-03-09 06:33:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:33:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:33:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-03-09 06:33:27,719 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2025-03-09 06:33:27,719 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 100 flow. Second operand 4 states and 76 transitions. [2025-03-09 06:33:27,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 194 flow [2025-03-09 06:33:27,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:27,721 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 100 flow [2025-03-09 06:33:27,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2025-03-09 06:33:27,721 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2025-03-09 06:33:27,721 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 100 flow [2025-03-09 06:33:27,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:27,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:27,722 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:27,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:33:27,722 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:27,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:27,722 INFO L85 PathProgramCache]: Analyzing trace with hash 605674058, now seen corresponding path program 1 times [2025-03-09 06:33:27,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:27,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406234389] [2025-03-09 06:33:27,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:27,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:27,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:33:27,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:33:27,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:27,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:27,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:27,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406234389] [2025-03-09 06:33:27,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406234389] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:33:27,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040370207] [2025-03-09 06:33:27,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:27,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:27,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:27,820 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:33:27,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:33:27,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:33:27,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:33:27,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:27,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:27,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 06:33:27,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:33:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:27,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:33:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:27,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040370207] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:33:27,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:33:27,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-09 06:33:27,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121800679] [2025-03-09 06:33:27,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:33:27,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 06:33:27,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:27,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 06:33:27,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-09 06:33:27,998 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-03-09 06:33:27,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 100 flow. Second operand has 18 states, 18 states have (on average 12.277777777777779) internal successors, (221), 18 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:27,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:27,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-03-09 06:33:28,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:28,134 INFO L124 PetriNetUnfolderBase]: 43/156 cut-off events. [2025-03-09 06:33:28,135 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2025-03-09 06:33:28,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 156 events. 43/156 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 509 event pairs, 42 based on Foata normal form. 4/150 useless extension candidates. Maximal degree in co-relation 257. Up to 101 conditions per place. [2025-03-09 06:33:28,136 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 16 selfloop transitions, 15 changer transitions 0/40 dead transitions. [2025-03-09 06:33:28,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 40 transitions, 210 flow [2025-03-09 06:33:28,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 06:33:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 06:33:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 200 transitions. [2025-03-09 06:33:28,137 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2025-03-09 06:33:28,137 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 100 flow. Second operand 15 states and 200 transitions. [2025-03-09 06:33:28,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 40 transitions, 210 flow [2025-03-09 06:33:28,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 40 transitions, 204 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:33:28,139 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 191 flow [2025-03-09 06:33:28,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=191, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2025-03-09 06:33:28,140 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2025-03-09 06:33:28,140 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 191 flow [2025-03-09 06:33:28,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.277777777777779) internal successors, (221), 18 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:28,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:28,140 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:28,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 06:33:28,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:28,345 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:28,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:28,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1628697674, now seen corresponding path program 2 times [2025-03-09 06:33:28,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:28,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301761574] [2025-03-09 06:33:28,346 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:28,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:28,354 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-09 06:33:28,379 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 28 statements. [2025-03-09 06:33:28,381 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:28,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:29,194 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-09 06:33:29,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:29,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301761574] [2025-03-09 06:33:29,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301761574] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:29,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:29,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:33:29,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927543143] [2025-03-09 06:33:29,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:29,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:33:29,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:29,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:33:29,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:33:29,205 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-03-09 06:33:29,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:29,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:29,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-03-09 06:33:29,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:29,363 INFO L124 PetriNetUnfolderBase]: 49/160 cut-off events. [2025-03-09 06:33:29,364 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2025-03-09 06:33:29,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 160 events. 49/160 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 470 event pairs, 20 based on Foata normal form. 8/162 useless extension candidates. Maximal degree in co-relation 259. Up to 79 conditions per place. [2025-03-09 06:33:29,364 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 39 selfloop transitions, 5 changer transitions 6/57 dead transitions. [2025-03-09 06:33:29,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 325 flow [2025-03-09 06:33:29,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:33:29,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:33:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2025-03-09 06:33:29,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2025-03-09 06:33:29,366 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 191 flow. Second operand 6 states and 107 transitions. [2025-03-09 06:33:29,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 325 flow [2025-03-09 06:33:29,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 315 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-09 06:33:29,368 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 208 flow [2025-03-09 06:33:29,368 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=208, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2025-03-09 06:33:29,368 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2025-03-09 06:33:29,368 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 208 flow [2025-03-09 06:33:29,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:29,369 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:29,369 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:29,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:33:29,369 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:29,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:29,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1045451414, now seen corresponding path program 1 times [2025-03-09 06:33:29,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:29,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61830393] [2025-03-09 06:33:29,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:29,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:29,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-09 06:33:29,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-09 06:33:29,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:29,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:29,417 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-09 06:33:29,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:29,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61830393] [2025-03-09 06:33:29,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61830393] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:29,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:29,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:33:29,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320699105] [2025-03-09 06:33:29,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:29,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:33:29,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:29,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:33:29,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:33:29,421 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-03-09 06:33:29,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:29,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:29,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-03-09 06:33:29,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:29,480 INFO L124 PetriNetUnfolderBase]: 33/127 cut-off events. [2025-03-09 06:33:29,480 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2025-03-09 06:33:29,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 127 events. 33/127 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 358 event pairs, 14 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 299. Up to 58 conditions per place. [2025-03-09 06:33:29,481 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 41 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2025-03-09 06:33:29,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 332 flow [2025-03-09 06:33:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:33:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:33:29,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2025-03-09 06:33:29,482 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6048387096774194 [2025-03-09 06:33:29,482 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 208 flow. Second operand 4 states and 75 transitions. [2025-03-09 06:33:29,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 332 flow [2025-03-09 06:33:29,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 321 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-09 06:33:29,485 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 203 flow [2025-03-09 06:33:29,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2025-03-09 06:33:29,485 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 25 predicate places. [2025-03-09 06:33:29,486 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 203 flow [2025-03-09 06:33:29,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:29,486 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:29,486 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:29,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:33:29,486 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:29,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1950744890, now seen corresponding path program 1 times [2025-03-09 06:33:29,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:29,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138880071] [2025-03-09 06:33:29,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:29,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:29,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 06:33:29,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 06:33:29,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:29,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:29,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:29,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138880071] [2025-03-09 06:33:29,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138880071] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:33:29,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948660859] [2025-03-09 06:33:29,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:29,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:29,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:29,712 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:33:29,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:33:29,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 06:33:29,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 06:33:29,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:29,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:29,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 06:33:29,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:33:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:29,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:33:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:29,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948660859] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:33:29,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:33:29,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-03-09 06:33:29,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423569862] [2025-03-09 06:33:29,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:33:29,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 06:33:29,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:29,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 06:33:29,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-03-09 06:33:30,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-03-09 06:33:30,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 203 flow. Second operand has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:30,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:30,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-03-09 06:33:30,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:30,191 INFO L124 PetriNetUnfolderBase]: 33/144 cut-off events. [2025-03-09 06:33:30,191 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2025-03-09 06:33:30,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 144 events. 33/144 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 398 event pairs, 32 based on Foata normal form. 3/141 useless extension candidates. Maximal degree in co-relation 249. Up to 82 conditions per place. [2025-03-09 06:33:30,192 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 17 selfloop transitions, 21 changer transitions 0/46 dead transitions. [2025-03-09 06:33:30,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 46 transitions, 333 flow [2025-03-09 06:33:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-09 06:33:30,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-09 06:33:30,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 271 transitions. [2025-03-09 06:33:30,193 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4162826420890937 [2025-03-09 06:33:30,193 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 203 flow. Second operand 21 states and 271 transitions. [2025-03-09 06:33:30,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 46 transitions, 333 flow [2025-03-09 06:33:30,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 46 transitions, 327 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:33:30,195 INFO L231 Difference]: Finished difference. Result has 78 places, 46 transitions, 308 flow [2025-03-09 06:33:30,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=308, PETRI_PLACES=78, PETRI_TRANSITIONS=46} [2025-03-09 06:33:30,198 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2025-03-09 06:33:30,198 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 46 transitions, 308 flow [2025-03-09 06:33:30,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:30,199 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:30,199 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:30,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 06:33:30,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:30,399 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:30,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:30,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1380353102, now seen corresponding path program 2 times [2025-03-09 06:33:30,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:30,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067168360] [2025-03-09 06:33:30,400 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:30,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:30,408 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-03-09 06:33:30,447 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 39 statements. [2025-03-09 06:33:30,447 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:30,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:30,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:30,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067168360] [2025-03-09 06:33:30,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067168360] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:30,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:30,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:33:30,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772716794] [2025-03-09 06:33:30,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:30,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:33:30,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:30,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:33:30,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:33:30,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-03-09 06:33:30,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 46 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:30,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:30,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-03-09 06:33:30,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:30,934 INFO L124 PetriNetUnfolderBase]: 36/145 cut-off events. [2025-03-09 06:33:30,935 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2025-03-09 06:33:30,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 145 events. 36/145 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 387 event pairs, 8 based on Foata normal form. 14/159 useless extension candidates. Maximal degree in co-relation 258. Up to 57 conditions per place. [2025-03-09 06:33:30,936 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 46 selfloop transitions, 6 changer transitions 4/62 dead transitions. [2025-03-09 06:33:30,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 62 transitions, 464 flow [2025-03-09 06:33:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:33:30,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:33:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2025-03-09 06:33:30,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2025-03-09 06:33:30,937 INFO L175 Difference]: Start difference. First operand has 78 places, 46 transitions, 308 flow. Second operand 6 states and 107 transitions. [2025-03-09 06:33:30,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 62 transitions, 464 flow [2025-03-09 06:33:30,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 421 flow, removed 1 selfloop flow, removed 13 redundant places. [2025-03-09 06:33:30,940 INFO L231 Difference]: Finished difference. Result has 74 places, 49 transitions, 305 flow [2025-03-09 06:33:30,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=74, PETRI_TRANSITIONS=49} [2025-03-09 06:33:30,940 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 41 predicate places. [2025-03-09 06:33:30,940 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 49 transitions, 305 flow [2025-03-09 06:33:30,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:30,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:30,940 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:30,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:33:30,943 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:30,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:30,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1627081028, now seen corresponding path program 1 times [2025-03-09 06:33:30,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:30,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996327912] [2025-03-09 06:33:30,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:30,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:30,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-09 06:33:31,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:33:31,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:31,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:34,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:34,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996327912] [2025-03-09 06:33:34,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996327912] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:34,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:34,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:34,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300126388] [2025-03-09 06:33:34,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:34,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:33:34,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:34,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:33:34,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:33:34,823 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-03-09 06:33:34,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 49 transitions, 305 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:34,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:34,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-03-09 06:33:34,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:36,509 INFO L124 PetriNetUnfolderBase]: 71/217 cut-off events. [2025-03-09 06:33:36,509 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2025-03-09 06:33:36,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 217 events. 71/217 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 725 event pairs, 12 based on Foata normal form. 3/220 useless extension candidates. Maximal degree in co-relation 577. Up to 45 conditions per place. [2025-03-09 06:33:36,510 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 21 changer transitions 6/96 dead transitions. [2025-03-09 06:33:36,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 654 flow [2025-03-09 06:33:36,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 06:33:36,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-09 06:33:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 188 transitions. [2025-03-09 06:33:36,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2025-03-09 06:33:36,517 INFO L175 Difference]: Start difference. First operand has 74 places, 49 transitions, 305 flow. Second operand 16 states and 188 transitions. [2025-03-09 06:33:36,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 654 flow [2025-03-09 06:33:36,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 96 transitions, 639 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:36,521 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 438 flow [2025-03-09 06:33:36,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=438, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2025-03-09 06:33:36,521 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 59 predicate places. [2025-03-09 06:33:36,521 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 438 flow [2025-03-09 06:33:36,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:36,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:36,522 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:36,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 06:33:36,522 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:36,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:36,522 INFO L85 PathProgramCache]: Analyzing trace with hash 91577526, now seen corresponding path program 2 times [2025-03-09 06:33:36,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:36,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095866874] [2025-03-09 06:33:36,522 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:36,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:36,531 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:33:36,569 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-09 06:33:36,569 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:36,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:38,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:38,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095866874] [2025-03-09 06:33:38,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095866874] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:38,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:38,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 06:33:38,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419018734] [2025-03-09 06:33:38,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:38,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:33:38,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:38,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:33:38,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:33:38,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2025-03-09 06:33:38,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:38,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:38,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2025-03-09 06:33:38,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:40,203 INFO L124 PetriNetUnfolderBase]: 69/256 cut-off events. [2025-03-09 06:33:40,203 INFO L125 PetriNetUnfolderBase]: For 495/498 co-relation queries the response was YES. [2025-03-09 06:33:40,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 256 events. 69/256 cut-off events. For 495/498 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1106 event pairs, 14 based on Foata normal form. 6/261 useless extension candidates. Maximal degree in co-relation 714. Up to 58 conditions per place. [2025-03-09 06:33:40,204 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 60 selfloop transitions, 21 changer transitions 3/90 dead transitions. [2025-03-09 06:33:40,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 90 transitions, 725 flow [2025-03-09 06:33:40,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:33:40,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:33:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2025-03-09 06:33:40,205 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45483870967741935 [2025-03-09 06:33:40,205 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 438 flow. Second operand 10 states and 141 transitions. [2025-03-09 06:33:40,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 90 transitions, 725 flow [2025-03-09 06:33:40,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 90 transitions, 695 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-09 06:33:40,211 INFO L231 Difference]: Finished difference. Result has 102 places, 71 transitions, 551 flow [2025-03-09 06:33:40,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=551, PETRI_PLACES=102, PETRI_TRANSITIONS=71} [2025-03-09 06:33:40,212 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 69 predicate places. [2025-03-09 06:33:40,213 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 71 transitions, 551 flow [2025-03-09 06:33:40,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:40,213 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:40,213 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:40,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:33:40,214 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:40,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:40,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1487537480, now seen corresponding path program 1 times [2025-03-09 06:33:40,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:40,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371526142] [2025-03-09 06:33:40,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:40,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:40,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-09 06:33:40,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:33:40,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:40,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:42,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:42,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371526142] [2025-03-09 06:33:42,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371526142] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:42,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:42,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:42,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220469342] [2025-03-09 06:33:42,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:42,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:33:42,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:42,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:33:42,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:33:42,743 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2025-03-09 06:33:42,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 71 transitions, 551 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:42,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:42,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2025-03-09 06:33:42,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:43,577 INFO L124 PetriNetUnfolderBase]: 80/274 cut-off events. [2025-03-09 06:33:43,577 INFO L125 PetriNetUnfolderBase]: For 664/671 co-relation queries the response was YES. [2025-03-09 06:33:43,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 274 events. 80/274 cut-off events. For 664/671 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1169 event pairs, 30 based on Foata normal form. 10/284 useless extension candidates. Maximal degree in co-relation 822. Up to 149 conditions per place. [2025-03-09 06:33:43,579 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 61 selfloop transitions, 34 changer transitions 2/101 dead transitions. [2025-03-09 06:33:43,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 101 transitions, 880 flow [2025-03-09 06:33:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 06:33:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-09 06:33:43,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 192 transitions. [2025-03-09 06:33:43,580 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2025-03-09 06:33:43,581 INFO L175 Difference]: Start difference. First operand has 102 places, 71 transitions, 551 flow. Second operand 16 states and 192 transitions. [2025-03-09 06:33:43,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 101 transitions, 880 flow [2025-03-09 06:33:43,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 101 transitions, 865 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:43,587 INFO L231 Difference]: Finished difference. Result has 118 places, 84 transitions, 719 flow [2025-03-09 06:33:43,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=719, PETRI_PLACES=118, PETRI_TRANSITIONS=84} [2025-03-09 06:33:43,589 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 85 predicate places. [2025-03-09 06:33:43,589 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 84 transitions, 719 flow [2025-03-09 06:33:43,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:43,589 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:43,589 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:43,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-09 06:33:43,590 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:43,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:43,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1039843196, now seen corresponding path program 2 times [2025-03-09 06:33:43,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:43,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525546301] [2025-03-09 06:33:43,591 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:43,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:43,603 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:33:43,619 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-09 06:33:43,619 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:43,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:48,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:48,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525546301] [2025-03-09 06:33:48,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525546301] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:48,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:48,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:48,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405772407] [2025-03-09 06:33:48,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:48,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:33:48,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:48,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:33:48,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:33:48,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-03-09 06:33:48,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 84 transitions, 719 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:48,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:48,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-03-09 06:33:48,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:49,616 INFO L124 PetriNetUnfolderBase]: 94/303 cut-off events. [2025-03-09 06:33:49,616 INFO L125 PetriNetUnfolderBase]: For 853/856 co-relation queries the response was YES. [2025-03-09 06:33:49,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 303 events. 94/303 cut-off events. For 853/856 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1328 event pairs, 36 based on Foata normal form. 4/307 useless extension candidates. Maximal degree in co-relation 1064. Up to 157 conditions per place. [2025-03-09 06:33:49,618 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 68 selfloop transitions, 37 changer transitions 2/109 dead transitions. [2025-03-09 06:33:49,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 109 transitions, 1045 flow [2025-03-09 06:33:49,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 06:33:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 06:33:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 193 transitions. [2025-03-09 06:33:49,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34587813620071683 [2025-03-09 06:33:49,619 INFO L175 Difference]: Start difference. First operand has 118 places, 84 transitions, 719 flow. Second operand 18 states and 193 transitions. [2025-03-09 06:33:49,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 109 transitions, 1045 flow [2025-03-09 06:33:49,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 109 transitions, 984 flow, removed 7 selfloop flow, removed 5 redundant places. [2025-03-09 06:33:49,628 INFO L231 Difference]: Finished difference. Result has 133 places, 90 transitions, 804 flow [2025-03-09 06:33:49,628 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=804, PETRI_PLACES=133, PETRI_TRANSITIONS=90} [2025-03-09 06:33:49,629 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 100 predicate places. [2025-03-09 06:33:49,629 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 90 transitions, 804 flow [2025-03-09 06:33:49,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:49,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:49,630 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:49,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 06:33:49,630 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:49,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:49,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1040881076, now seen corresponding path program 3 times [2025-03-09 06:33:49,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:49,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853917246] [2025-03-09 06:33:49,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:33:49,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:49,641 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 11 equivalence classes. [2025-03-09 06:33:49,660 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-09 06:33:49,660 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:33:49,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:53,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:53,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853917246] [2025-03-09 06:33:53,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853917246] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:53,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:53,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:53,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763448091] [2025-03-09 06:33:53,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:53,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:33:53,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:53,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:33:53,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:33:53,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-03-09 06:33:53,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 90 transitions, 804 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:53,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:53,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-03-09 06:33:53,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:55,165 INFO L124 PetriNetUnfolderBase]: 99/316 cut-off events. [2025-03-09 06:33:55,166 INFO L125 PetriNetUnfolderBase]: For 942/945 co-relation queries the response was YES. [2025-03-09 06:33:55,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1257 conditions, 316 events. 99/316 cut-off events. For 942/945 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1425 event pairs, 31 based on Foata normal form. 4/320 useless extension candidates. Maximal degree in co-relation 1150. Up to 153 conditions per place. [2025-03-09 06:33:55,168 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 74 selfloop transitions, 43 changer transitions 0/119 dead transitions. [2025-03-09 06:33:55,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 119 transitions, 1180 flow [2025-03-09 06:33:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-09 06:33:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-09 06:33:55,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 189 transitions. [2025-03-09 06:33:55,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3586337760910816 [2025-03-09 06:33:55,170 INFO L175 Difference]: Start difference. First operand has 133 places, 90 transitions, 804 flow. Second operand 17 states and 189 transitions. [2025-03-09 06:33:55,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 119 transitions, 1180 flow [2025-03-09 06:33:55,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 119 transitions, 1105 flow, removed 19 selfloop flow, removed 8 redundant places. [2025-03-09 06:33:55,177 INFO L231 Difference]: Finished difference. Result has 144 places, 98 transitions, 917 flow [2025-03-09 06:33:55,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=917, PETRI_PLACES=144, PETRI_TRANSITIONS=98} [2025-03-09 06:33:55,177 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 111 predicate places. [2025-03-09 06:33:55,177 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 98 transitions, 917 flow [2025-03-09 06:33:55,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:55,178 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:55,178 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:55,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-09 06:33:55,178 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:33:55,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:55,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1010350106, now seen corresponding path program 4 times [2025-03-09 06:33:55,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:55,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147287668] [2025-03-09 06:33:55,179 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:33:55,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:55,186 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:33:55,222 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:33:55,222 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:33:55,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:58,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:58,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147287668] [2025-03-09 06:33:58,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147287668] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:58,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:58,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:58,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508173311] [2025-03-09 06:33:58,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:58,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:58,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:58,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:58,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:58,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-03-09 06:33:58,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 98 transitions, 917 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:58,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:58,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-03-09 06:33:58,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:00,338 INFO L124 PetriNetUnfolderBase]: 107/347 cut-off events. [2025-03-09 06:34:00,338 INFO L125 PetriNetUnfolderBase]: For 1205/1208 co-relation queries the response was YES. [2025-03-09 06:34:00,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 347 events. 107/347 cut-off events. For 1205/1208 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1669 event pairs, 31 based on Foata normal form. 6/353 useless extension candidates. Maximal degree in co-relation 1332. Up to 123 conditions per place. [2025-03-09 06:34:00,341 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 83 selfloop transitions, 46 changer transitions 0/131 dead transitions. [2025-03-09 06:34:00,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 131 transitions, 1345 flow [2025-03-09 06:34:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-09 06:34:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-03-09 06:34:00,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 222 transitions. [2025-03-09 06:34:00,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2025-03-09 06:34:00,345 INFO L175 Difference]: Start difference. First operand has 144 places, 98 transitions, 917 flow. Second operand 20 states and 222 transitions. [2025-03-09 06:34:00,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 131 transitions, 1345 flow [2025-03-09 06:34:00,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 131 transitions, 1278 flow, removed 6 selfloop flow, removed 10 redundant places. [2025-03-09 06:34:00,353 INFO L231 Difference]: Finished difference. Result has 157 places, 104 transitions, 1016 flow [2025-03-09 06:34:00,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1016, PETRI_PLACES=157, PETRI_TRANSITIONS=104} [2025-03-09 06:34:00,354 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 124 predicate places. [2025-03-09 06:34:00,355 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 104 transitions, 1016 flow [2025-03-09 06:34:00,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:00,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:00,355 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:00,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-09 06:34:00,355 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:34:00,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:00,356 INFO L85 PathProgramCache]: Analyzing trace with hash 945539606, now seen corresponding path program 5 times [2025-03-09 06:34:00,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:00,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416114446] [2025-03-09 06:34:00,357 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 06:34:00,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:00,365 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-03-09 06:34:00,394 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:34:00,394 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-09 06:34:00,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-09 06:34:01,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:01,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416114446] [2025-03-09 06:34:01,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416114446] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:34:01,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318956931] [2025-03-09 06:34:01,562 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 06:34:01,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:34:01,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:34:01,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:34:01,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:34:01,613 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-03-09 06:34:01,697 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:34:01,698 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-09 06:34:01,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:01,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 74 conjuncts are in the unsatisfiable core [2025-03-09 06:34:01,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:34:03,035 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 15 treesize of output 11 [2025-03-09 06:34:03,222 INFO L349 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2025-03-09 06:34:03,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2025-03-09 06:34:03,530 INFO L349 Elim1Store]: treesize reduction 176, result has 40.9 percent of original size [2025-03-09 06:34:03,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 56 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 93 treesize of output 155 [2025-03-09 06:34:04,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:34:04,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 56 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 535 treesize of output 349 [2025-03-09 06:34:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:34:04,992 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:34:05,191 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 18 treesize of output 16 [2025-03-09 06:34:05,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2025-03-09 06:34:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:05,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318956931] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-09 06:34:05,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-09 06:34:05,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 25] total 37 [2025-03-09 06:34:05,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283103684] [2025-03-09 06:34:05,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:05,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:34:05,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:05,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:34:05,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1277, Unknown=0, NotChecked=0, Total=1482 [2025-03-09 06:34:05,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2025-03-09 06:34:05,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 104 transitions, 1016 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2025-03-09 06:34:05,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:05,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2025-03-09 06:34:05,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:05,906 INFO L124 PetriNetUnfolderBase]: 101/360 cut-off events. [2025-03-09 06:34:05,906 INFO L125 PetriNetUnfolderBase]: For 1552/1554 co-relation queries the response was YES. [2025-03-09 06:34:05,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 360 events. 101/360 cut-off events. For 1552/1554 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1894 event pairs, 20 based on Foata normal form. 5/365 useless extension candidates. Maximal degree in co-relation 1497. Up to 54 conditions per place. [2025-03-09 06:34:05,910 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 93 selfloop transitions, 46 changer transitions 0/149 dead transitions. [2025-03-09 06:34:05,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 149 transitions, 1610 flow [2025-03-09 06:34:05,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:34:05,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:34:05,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 178 transitions. [2025-03-09 06:34:05,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2025-03-09 06:34:05,911 INFO L175 Difference]: Start difference. First operand has 157 places, 104 transitions, 1016 flow. Second operand 12 states and 178 transitions. [2025-03-09 06:34:05,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 149 transitions, 1610 flow [2025-03-09 06:34:05,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 149 transitions, 1531 flow, removed 8 selfloop flow, removed 11 redundant places. [2025-03-09 06:34:05,920 INFO L231 Difference]: Finished difference. Result has 161 places, 115 transitions, 1190 flow [2025-03-09 06:34:05,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1190, PETRI_PLACES=161, PETRI_TRANSITIONS=115} [2025-03-09 06:34:05,921 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 128 predicate places. [2025-03-09 06:34:05,921 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 115 transitions, 1190 flow [2025-03-09 06:34:05,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2025-03-09 06:34:05,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:05,922 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:05,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 06:34:06,122 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,SelfDestructingSolverStorable16 [2025-03-09 06:34:06,123 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:34:06,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:06,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1036916622, now seen corresponding path program 3 times [2025-03-09 06:34:06,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:06,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469700449] [2025-03-09 06:34:06,123 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:34:06,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:06,131 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 11 equivalence classes. [2025-03-09 06:34:06,146 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-09 06:34:06,146 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:34:06,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:09,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:09,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469700449] [2025-03-09 06:34:09,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469700449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:09,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:09,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:34:09,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533346574] [2025-03-09 06:34:09,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:09,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:34:09,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:09,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:34:09,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:34:09,288 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-03-09 06:34:09,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 115 transitions, 1190 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:09,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:09,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-03-09 06:34:09,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:10,111 INFO L124 PetriNetUnfolderBase]: 155/484 cut-off events. [2025-03-09 06:34:10,112 INFO L125 PetriNetUnfolderBase]: For 1892/1894 co-relation queries the response was YES. [2025-03-09 06:34:10,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2182 conditions, 484 events. 155/484 cut-off events. For 1892/1894 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2718 event pairs, 41 based on Foata normal form. 6/490 useless extension candidates. Maximal degree in co-relation 2052. Up to 186 conditions per place. [2025-03-09 06:34:10,115 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 108 selfloop transitions, 38 changer transitions 0/148 dead transitions. [2025-03-09 06:34:10,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 148 transitions, 1670 flow [2025-03-09 06:34:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 06:34:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-09 06:34:10,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 167 transitions. [2025-03-09 06:34:10,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3847926267281106 [2025-03-09 06:34:10,116 INFO L175 Difference]: Start difference. First operand has 161 places, 115 transitions, 1190 flow. Second operand 14 states and 167 transitions. [2025-03-09 06:34:10,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 148 transitions, 1670 flow [2025-03-09 06:34:10,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 148 transitions, 1654 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-09 06:34:10,126 INFO L231 Difference]: Finished difference. Result has 178 places, 122 transitions, 1392 flow [2025-03-09 06:34:10,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1392, PETRI_PLACES=178, PETRI_TRANSITIONS=122} [2025-03-09 06:34:10,127 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 145 predicate places. [2025-03-09 06:34:10,127 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 122 transitions, 1392 flow [2025-03-09 06:34:10,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:10,127 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:10,127 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:10,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-09 06:34:10,127 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:34:10,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:10,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1976684140, now seen corresponding path program 4 times [2025-03-09 06:34:10,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:10,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138694291] [2025-03-09 06:34:10,128 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:34:10,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:10,135 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:34:10,173 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:34:10,173 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:34:10,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:13,305 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:13,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:13,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138694291] [2025-03-09 06:34:13,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138694291] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:13,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:13,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:34:13,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524524821] [2025-03-09 06:34:13,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:13,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:34:13,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:13,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:34:13,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:34:13,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-03-09 06:34:13,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 122 transitions, 1392 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:13,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:13,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-03-09 06:34:13,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:14,144 INFO L124 PetriNetUnfolderBase]: 168/523 cut-off events. [2025-03-09 06:34:14,145 INFO L125 PetriNetUnfolderBase]: For 2557/2559 co-relation queries the response was YES. [2025-03-09 06:34:14,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2399 conditions, 523 events. 168/523 cut-off events. For 2557/2559 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3051 event pairs, 43 based on Foata normal form. 6/529 useless extension candidates. Maximal degree in co-relation 2264. Up to 227 conditions per place. [2025-03-09 06:34:14,148 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 106 selfloop transitions, 43 changer transitions 0/151 dead transitions. [2025-03-09 06:34:14,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 151 transitions, 1833 flow [2025-03-09 06:34:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 06:34:14,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 06:34:14,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 170 transitions. [2025-03-09 06:34:14,149 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2025-03-09 06:34:14,149 INFO L175 Difference]: Start difference. First operand has 178 places, 122 transitions, 1392 flow. Second operand 15 states and 170 transitions. [2025-03-09 06:34:14,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 151 transitions, 1833 flow [2025-03-09 06:34:14,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 151 transitions, 1784 flow, removed 8 selfloop flow, removed 7 redundant places. [2025-03-09 06:34:14,161 INFO L231 Difference]: Finished difference. Result has 189 places, 127 transitions, 1527 flow [2025-03-09 06:34:14,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1527, PETRI_PLACES=189, PETRI_TRANSITIONS=127} [2025-03-09 06:34:14,162 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 156 predicate places. [2025-03-09 06:34:14,162 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 127 transitions, 1527 flow [2025-03-09 06:34:14,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:14,162 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:14,162 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:14,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 06:34:14,162 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:34:14,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:14,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1662386742, now seen corresponding path program 5 times [2025-03-09 06:34:14,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:14,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303249153] [2025-03-09 06:34:14,163 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 06:34:14,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:14,169 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-03-09 06:34:14,191 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:34:14,191 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-09 06:34:14,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:14,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:14,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303249153] [2025-03-09 06:34:14,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303249153] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:14,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:14,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:34:14,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331053700] [2025-03-09 06:34:14,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:14,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:34:14,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:14,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:34:14,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:34:15,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2025-03-09 06:34:15,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 127 transitions, 1527 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:15,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:15,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2025-03-09 06:34:15,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:15,414 INFO L124 PetriNetUnfolderBase]: 144/493 cut-off events. [2025-03-09 06:34:15,414 INFO L125 PetriNetUnfolderBase]: For 3127/3129 co-relation queries the response was YES. [2025-03-09 06:34:15,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2376 conditions, 493 events. 144/493 cut-off events. For 3127/3129 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2953 event pairs, 35 based on Foata normal form. 4/497 useless extension candidates. Maximal degree in co-relation 2238. Up to 132 conditions per place. [2025-03-09 06:34:15,418 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 86 selfloop transitions, 44 changer transitions 0/139 dead transitions. [2025-03-09 06:34:15,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 139 transitions, 1818 flow [2025-03-09 06:34:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:34:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:34:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2025-03-09 06:34:15,419 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3771712158808933 [2025-03-09 06:34:15,419 INFO L175 Difference]: Start difference. First operand has 189 places, 127 transitions, 1527 flow. Second operand 13 states and 152 transitions. [2025-03-09 06:34:15,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 139 transitions, 1818 flow [2025-03-09 06:34:15,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 139 transitions, 1734 flow, removed 13 selfloop flow, removed 9 redundant places. [2025-03-09 06:34:15,432 INFO L231 Difference]: Finished difference. Result has 191 places, 126 transitions, 1521 flow [2025-03-09 06:34:15,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1521, PETRI_PLACES=191, PETRI_TRANSITIONS=126} [2025-03-09 06:34:15,432 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 158 predicate places. [2025-03-09 06:34:15,432 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 126 transitions, 1521 flow [2025-03-09 06:34:15,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:15,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:15,433 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:15,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-09 06:34:15,433 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:34:15,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:15,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1966601889, now seen corresponding path program 1 times [2025-03-09 06:34:15,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:15,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829035823] [2025-03-09 06:34:15,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:34:15,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:15,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-09 06:34:15,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:34:15,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:34:15,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:17,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:17,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829035823] [2025-03-09 06:34:17,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829035823] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:17,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:17,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 06:34:17,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795479008] [2025-03-09 06:34:17,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:17,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:34:17,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:17,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:34:17,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:34:17,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2025-03-09 06:34:17,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 126 transitions, 1521 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:17,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:17,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2025-03-09 06:34:17,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:18,550 INFO L124 PetriNetUnfolderBase]: 122/452 cut-off events. [2025-03-09 06:34:18,550 INFO L125 PetriNetUnfolderBase]: For 2935/2937 co-relation queries the response was YES. [2025-03-09 06:34:18,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2218 conditions, 452 events. 122/452 cut-off events. For 2935/2937 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2741 event pairs, 47 based on Foata normal form. 12/459 useless extension candidates. Maximal degree in co-relation 2105. Up to 223 conditions per place. [2025-03-09 06:34:18,553 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 71 selfloop transitions, 20 changer transitions 30/143 dead transitions. [2025-03-09 06:34:18,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 143 transitions, 1837 flow [2025-03-09 06:34:18,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 06:34:18,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 06:34:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2025-03-09 06:34:18,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4717741935483871 [2025-03-09 06:34:18,554 INFO L175 Difference]: Start difference. First operand has 191 places, 126 transitions, 1521 flow. Second operand 8 states and 117 transitions. [2025-03-09 06:34:18,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 143 transitions, 1837 flow [2025-03-09 06:34:18,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 143 transitions, 1756 flow, removed 2 selfloop flow, removed 10 redundant places. [2025-03-09 06:34:18,564 INFO L231 Difference]: Finished difference. Result has 188 places, 109 transitions, 1199 flow [2025-03-09 06:34:18,564 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1199, PETRI_PLACES=188, PETRI_TRANSITIONS=109} [2025-03-09 06:34:18,564 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 155 predicate places. [2025-03-09 06:34:18,564 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 109 transitions, 1199 flow [2025-03-09 06:34:18,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:18,564 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:18,565 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:18,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-09 06:34:18,565 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:34:18,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:18,565 INFO L85 PathProgramCache]: Analyzing trace with hash 507812115, now seen corresponding path program 1 times [2025-03-09 06:34:18,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:18,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269541864] [2025-03-09 06:34:18,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:34:18,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:18,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-09 06:34:18,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:34:18,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:34:18,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:20,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:20,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269541864] [2025-03-09 06:34:20,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269541864] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:20,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:20,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:34:20,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191894832] [2025-03-09 06:34:20,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:20,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:34:20,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:20,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:34:20,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:34:21,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2025-03-09 06:34:21,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 109 transitions, 1199 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:21,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:21,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2025-03-09 06:34:21,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:21,870 INFO L124 PetriNetUnfolderBase]: 84/337 cut-off events. [2025-03-09 06:34:21,870 INFO L125 PetriNetUnfolderBase]: For 1954/1956 co-relation queries the response was YES. [2025-03-09 06:34:21,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 337 events. 84/337 cut-off events. For 1954/1956 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1800 event pairs, 40 based on Foata normal form. 8/343 useless extension candidates. Maximal degree in co-relation 1479. Up to 195 conditions per place. [2025-03-09 06:34:21,872 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 24 changer transitions 17/119 dead transitions. [2025-03-09 06:34:21,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 119 transitions, 1424 flow [2025-03-09 06:34:21,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:34:21,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:34:21,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2025-03-09 06:34:21,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4094292803970223 [2025-03-09 06:34:21,874 INFO L175 Difference]: Start difference. First operand has 188 places, 109 transitions, 1199 flow. Second operand 13 states and 165 transitions. [2025-03-09 06:34:21,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 119 transitions, 1424 flow [2025-03-09 06:34:21,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 119 transitions, 1316 flow, removed 3 selfloop flow, removed 12 redundant places. [2025-03-09 06:34:21,880 INFO L231 Difference]: Finished difference. Result has 182 places, 97 transitions, 988 flow [2025-03-09 06:34:21,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=988, PETRI_PLACES=182, PETRI_TRANSITIONS=97} [2025-03-09 06:34:21,881 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 149 predicate places. [2025-03-09 06:34:21,881 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 97 transitions, 988 flow [2025-03-09 06:34:21,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:21,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:21,881 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:21,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-09 06:34:21,881 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:34:21,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:21,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2091320834, now seen corresponding path program 1 times [2025-03-09 06:34:21,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:21,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934985478] [2025-03-09 06:34:21,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:34:21,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:21,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-09 06:34:21,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:34:21,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:34:21,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:24,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:24,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934985478] [2025-03-09 06:34:24,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934985478] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:24,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:24,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:34:24,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735475913] [2025-03-09 06:34:24,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:24,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:34:24,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:24,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:34:24,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:34:24,013 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-03-09 06:34:24,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 97 transitions, 988 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:24,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:24,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-03-09 06:34:24,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:24,428 INFO L124 PetriNetUnfolderBase]: 95/322 cut-off events. [2025-03-09 06:34:24,428 INFO L125 PetriNetUnfolderBase]: For 1062/1062 co-relation queries the response was YES. [2025-03-09 06:34:24,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 322 events. 95/322 cut-off events. For 1062/1062 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1559 event pairs, 16 based on Foata normal form. 2/324 useless extension candidates. Maximal degree in co-relation 1319. Up to 85 conditions per place. [2025-03-09 06:34:24,431 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 89 selfloop transitions, 26 changer transitions 0/117 dead transitions. [2025-03-09 06:34:24,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 117 transitions, 1329 flow [2025-03-09 06:34:24,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 06:34:24,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 06:34:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2025-03-09 06:34:24,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2025-03-09 06:34:24,432 INFO L175 Difference]: Start difference. First operand has 182 places, 97 transitions, 988 flow. Second operand 11 states and 126 transitions. [2025-03-09 06:34:24,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 117 transitions, 1329 flow [2025-03-09 06:34:24,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 117 transitions, 1234 flow, removed 4 selfloop flow, removed 20 redundant places. [2025-03-09 06:34:24,437 INFO L231 Difference]: Finished difference. Result has 163 places, 96 transitions, 933 flow [2025-03-09 06:34:24,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=933, PETRI_PLACES=163, PETRI_TRANSITIONS=96} [2025-03-09 06:34:24,438 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 130 predicate places. [2025-03-09 06:34:24,438 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 96 transitions, 933 flow [2025-03-09 06:34:24,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:24,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:24,438 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:24,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-09 06:34:24,438 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:34:24,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:24,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2092424737, now seen corresponding path program 2 times [2025-03-09 06:34:24,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:24,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814103107] [2025-03-09 06:34:24,439 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:34:24,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:24,448 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-03-09 06:34:24,471 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:34:24,471 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:34:24,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:25,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:25,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814103107] [2025-03-09 06:34:25,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814103107] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:25,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:25,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 06:34:25,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935810718] [2025-03-09 06:34:25,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:25,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:34:25,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:25,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:34:25,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:34:25,777 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-03-09 06:34:25,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 96 transitions, 933 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:25,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:25,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-03-09 06:34:25,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:26,465 INFO L124 PetriNetUnfolderBase]: 63/284 cut-off events. [2025-03-09 06:34:26,465 INFO L125 PetriNetUnfolderBase]: For 939/939 co-relation queries the response was YES. [2025-03-09 06:34:26,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1241 conditions, 284 events. 63/284 cut-off events. For 939/939 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1450 event pairs, 20 based on Foata normal form. 3/284 useless extension candidates. Maximal degree in co-relation 1138. Up to 93 conditions per place. [2025-03-09 06:34:26,467 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 57 selfloop transitions, 27 changer transitions 8/111 dead transitions. [2025-03-09 06:34:26,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 111 transitions, 1171 flow [2025-03-09 06:34:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 06:34:26,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 06:34:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 212 transitions. [2025-03-09 06:34:26,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4559139784946237 [2025-03-09 06:34:26,468 INFO L175 Difference]: Start difference. First operand has 163 places, 96 transitions, 933 flow. Second operand 15 states and 212 transitions. [2025-03-09 06:34:26,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 111 transitions, 1171 flow [2025-03-09 06:34:26,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 111 transitions, 1125 flow, removed 1 selfloop flow, removed 9 redundant places. [2025-03-09 06:34:26,473 INFO L231 Difference]: Finished difference. Result has 170 places, 92 transitions, 912 flow [2025-03-09 06:34:26,474 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=912, PETRI_PLACES=170, PETRI_TRANSITIONS=92} [2025-03-09 06:34:26,474 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 137 predicate places. [2025-03-09 06:34:26,474 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 92 transitions, 912 flow [2025-03-09 06:34:26,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:26,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:26,474 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:26,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-09 06:34:26,475 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:34:26,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:26,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2124599017, now seen corresponding path program 3 times [2025-03-09 06:34:26,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:26,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811958123] [2025-03-09 06:34:26,475 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:34:26,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:26,481 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 11 equivalence classes. [2025-03-09 06:34:26,494 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 45 statements. [2025-03-09 06:34:26,494 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 06:34:26,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:28,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:28,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811958123] [2025-03-09 06:34:28,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811958123] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:28,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:28,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 06:34:28,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914466270] [2025-03-09 06:34:28,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:28,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:34:28,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:28,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:34:28,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:34:28,084 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-03-09 06:34:28,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 92 transitions, 912 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:28,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:28,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-03-09 06:34:28,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:28,625 INFO L124 PetriNetUnfolderBase]: 57/262 cut-off events. [2025-03-09 06:34:28,625 INFO L125 PetriNetUnfolderBase]: For 970/970 co-relation queries the response was YES. [2025-03-09 06:34:28,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 262 events. 57/262 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1278 event pairs, 15 based on Foata normal form. 6/267 useless extension candidates. Maximal degree in co-relation 1095. Up to 93 conditions per place. [2025-03-09 06:34:28,626 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 23 changer transitions 16/104 dead transitions. [2025-03-09 06:34:28,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 104 transitions, 1124 flow [2025-03-09 06:34:28,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 06:34:28,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-09 06:34:28,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 199 transitions. [2025-03-09 06:34:28,627 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45852534562211983 [2025-03-09 06:34:28,627 INFO L175 Difference]: Start difference. First operand has 170 places, 92 transitions, 912 flow. Second operand 14 states and 199 transitions. [2025-03-09 06:34:28,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 104 transitions, 1124 flow [2025-03-09 06:34:28,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 104 transitions, 1015 flow, removed 7 selfloop flow, removed 17 redundant places. [2025-03-09 06:34:28,632 INFO L231 Difference]: Finished difference. Result has 161 places, 79 transitions, 737 flow [2025-03-09 06:34:28,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=737, PETRI_PLACES=161, PETRI_TRANSITIONS=79} [2025-03-09 06:34:28,632 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 128 predicate places. [2025-03-09 06:34:28,632 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 79 transitions, 737 flow [2025-03-09 06:34:28,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:28,632 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:28,632 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:28,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-09 06:34:28,632 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:34:28,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:28,633 INFO L85 PathProgramCache]: Analyzing trace with hash -753043011, now seen corresponding path program 4 times [2025-03-09 06:34:28,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:28,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093343551] [2025-03-09 06:34:28,633 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:34:28,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:28,639 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-03-09 06:34:28,656 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:34:28,656 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:34:28,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:31,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:31,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093343551] [2025-03-09 06:34:31,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093343551] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:31,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:31,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:34:31,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104197399] [2025-03-09 06:34:31,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:31,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:34:31,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:31,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:34:31,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:34:31,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-03-09 06:34:31,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 79 transitions, 737 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:31,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:31,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-03-09 06:34:31,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:31,674 INFO L124 PetriNetUnfolderBase]: 49/231 cut-off events. [2025-03-09 06:34:31,674 INFO L125 PetriNetUnfolderBase]: For 657/657 co-relation queries the response was YES. [2025-03-09 06:34:31,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 231 events. 49/231 cut-off events. For 657/657 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1028 event pairs, 20 based on Foata normal form. 3/234 useless extension candidates. Maximal degree in co-relation 932. Up to 111 conditions per place. [2025-03-09 06:34:31,675 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 46 selfloop transitions, 16 changer transitions 13/87 dead transitions. [2025-03-09 06:34:31,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 87 transitions, 911 flow [2025-03-09 06:34:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:34:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:34:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 174 transitions. [2025-03-09 06:34:31,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2025-03-09 06:34:31,677 INFO L175 Difference]: Start difference. First operand has 161 places, 79 transitions, 737 flow. Second operand 12 states and 174 transitions. [2025-03-09 06:34:31,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 87 transitions, 911 flow [2025-03-09 06:34:31,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 87 transitions, 837 flow, removed 3 selfloop flow, removed 17 redundant places. [2025-03-09 06:34:31,680 INFO L231 Difference]: Finished difference. Result has 144 places, 71 transitions, 631 flow [2025-03-09 06:34:31,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=631, PETRI_PLACES=144, PETRI_TRANSITIONS=71} [2025-03-09 06:34:31,681 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 111 predicate places. [2025-03-09 06:34:31,681 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 71 transitions, 631 flow [2025-03-09 06:34:31,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:31,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:31,681 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:31,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-09 06:34:31,681 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:34:31,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:31,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1882855231, now seen corresponding path program 2 times [2025-03-09 06:34:31,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:31,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392442454] [2025-03-09 06:34:31,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:34:31,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:31,688 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-03-09 06:34:31,704 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:34:31,704 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:34:31,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:34,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:34,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392442454] [2025-03-09 06:34:34,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392442454] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:34,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:34,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:34:34,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953925464] [2025-03-09 06:34:34,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:34,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:34:34,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:34,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:34:34,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:34:34,025 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-03-09 06:34:34,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 71 transitions, 631 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:34,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:34,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-03-09 06:34:34,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:35,616 INFO L124 PetriNetUnfolderBase]: 45/212 cut-off events. [2025-03-09 06:34:35,616 INFO L125 PetriNetUnfolderBase]: For 557/557 co-relation queries the response was YES. [2025-03-09 06:34:35,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 212 events. 45/212 cut-off events. For 557/557 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 930 event pairs, 2 based on Foata normal form. 12/224 useless extension candidates. Maximal degree in co-relation 847. Up to 45 conditions per place. [2025-03-09 06:34:35,618 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 48 selfloop transitions, 14 changer transitions 29/101 dead transitions. [2025-03-09 06:34:35,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 101 transitions, 991 flow [2025-03-09 06:34:35,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-09 06:34:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-09 06:34:35,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 241 transitions. [2025-03-09 06:34:35,621 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4573055028462998 [2025-03-09 06:34:35,621 INFO L175 Difference]: Start difference. First operand has 144 places, 71 transitions, 631 flow. Second operand 17 states and 241 transitions. [2025-03-09 06:34:35,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 101 transitions, 991 flow [2025-03-09 06:34:35,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 101 transitions, 931 flow, removed 3 selfloop flow, removed 14 redundant places. [2025-03-09 06:34:35,625 INFO L231 Difference]: Finished difference. Result has 144 places, 61 transitions, 520 flow [2025-03-09 06:34:35,625 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=520, PETRI_PLACES=144, PETRI_TRANSITIONS=61} [2025-03-09 06:34:35,626 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 111 predicate places. [2025-03-09 06:34:35,626 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 61 transitions, 520 flow [2025-03-09 06:34:35,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:35,626 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:35,626 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:35,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-09 06:34:35,626 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:34:35,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:35,627 INFO L85 PathProgramCache]: Analyzing trace with hash -406436139, now seen corresponding path program 1 times [2025-03-09 06:34:35,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:35,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564908412] [2025-03-09 06:34:35,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:34:35,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:35,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-09 06:34:35,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-09 06:34:35,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:34:35,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:37,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:37,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564908412] [2025-03-09 06:34:37,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564908412] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:37,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:37,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:34:37,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484190935] [2025-03-09 06:34:37,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:37,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:34:37,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:37,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:34:37,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:34:37,730 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2025-03-09 06:34:37,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 61 transitions, 520 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:37,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:37,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2025-03-09 06:34:37,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:38,103 INFO L124 PetriNetUnfolderBase]: 24/136 cut-off events. [2025-03-09 06:34:38,104 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2025-03-09 06:34:38,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 136 events. 24/136 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 356 event pairs, 13 based on Foata normal form. 2/138 useless extension candidates. Maximal degree in co-relation 518. Up to 51 conditions per place. [2025-03-09 06:34:38,105 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 35 selfloop transitions, 8 changer transitions 15/65 dead transitions. [2025-03-09 06:34:38,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 65 transitions, 638 flow [2025-03-09 06:34:38,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:34:38,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:34:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2025-03-09 06:34:38,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2025-03-09 06:34:38,106 INFO L175 Difference]: Start difference. First operand has 144 places, 61 transitions, 520 flow. Second operand 10 states and 122 transitions. [2025-03-09 06:34:38,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 65 transitions, 638 flow [2025-03-09 06:34:38,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 65 transitions, 543 flow, removed 14 selfloop flow, removed 24 redundant places. [2025-03-09 06:34:38,108 INFO L231 Difference]: Finished difference. Result has 113 places, 50 transitions, 385 flow [2025-03-09 06:34:38,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=113, PETRI_TRANSITIONS=50} [2025-03-09 06:34:38,109 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 80 predicate places. [2025-03-09 06:34:38,109 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 50 transitions, 385 flow [2025-03-09 06:34:38,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:38,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:38,109 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:38,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-09 06:34:38,109 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:34:38,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:38,109 INFO L85 PathProgramCache]: Analyzing trace with hash -201209666, now seen corresponding path program 1 times [2025-03-09 06:34:38,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:38,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740232115] [2025-03-09 06:34:38,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:34:38,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:38,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-09 06:34:38,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-09 06:34:38,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:34:38,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:44,114 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:44,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:44,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740232115] [2025-03-09 06:34:44,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740232115] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:44,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:44,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:34:44,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308859402] [2025-03-09 06:34:44,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:44,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:34:44,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:44,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:34:44,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:34:44,172 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2025-03-09 06:34:44,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 50 transitions, 385 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:44,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:44,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2025-03-09 06:34:44,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:44,676 INFO L124 PetriNetUnfolderBase]: 13/95 cut-off events. [2025-03-09 06:34:44,676 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2025-03-09 06:34:44,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 95 events. 13/95 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 179 event pairs, 4 based on Foata normal form. 4/99 useless extension candidates. Maximal degree in co-relation 278. Up to 26 conditions per place. [2025-03-09 06:34:44,676 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 34 selfloop transitions, 3 changer transitions 18/59 dead transitions. [2025-03-09 06:34:44,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 59 transitions, 531 flow [2025-03-09 06:34:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 06:34:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 06:34:44,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2025-03-09 06:34:44,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2025-03-09 06:34:44,677 INFO L175 Difference]: Start difference. First operand has 113 places, 50 transitions, 385 flow. Second operand 8 states and 100 transitions. [2025-03-09 06:34:44,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 59 transitions, 531 flow [2025-03-09 06:34:44,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 59 transitions, 474 flow, removed 0 selfloop flow, removed 15 redundant places. [2025-03-09 06:34:44,679 INFO L231 Difference]: Finished difference. Result has 86 places, 41 transitions, 286 flow [2025-03-09 06:34:44,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=286, PETRI_PLACES=86, PETRI_TRANSITIONS=41} [2025-03-09 06:34:44,680 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 53 predicate places. [2025-03-09 06:34:44,680 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 41 transitions, 286 flow [2025-03-09 06:34:44,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:34:44,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:44,680 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:44,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-09 06:34:44,680 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:34:44,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:44,681 INFO L85 PathProgramCache]: Analyzing trace with hash 398592816, now seen corresponding path program 2 times [2025-03-09 06:34:44,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:44,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480938212] [2025-03-09 06:34:44,681 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:34:44,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:44,688 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-03-09 06:34:44,707 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-03-09 06:34:44,707 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:34:44,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:48,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:48,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480938212] [2025-03-09 06:34:48,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480938212] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:34:48,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530280926] [2025-03-09 06:34:48,703 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:34:48,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:34:48,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:34:48,705 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) [2025-03-09 06:34:48,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:34:48,762 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-03-09 06:34:48,875 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-03-09 06:34:48,875 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:34:48,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:48,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 77 conjuncts are in the unsatisfiable core [2025-03-09 06:34:48,879 INFO L279 TraceCheckSpWp]: Computing forward predicates...