./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/fib_unsafe-11.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 5b16c68af06359cf155927d2335a825cd179e6a83a999e1ead7a6952268e92c6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:29:02,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:29:02,344 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:29:02,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:29:02,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:29:02,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:29:02,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:29:02,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:29:02,379 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:29:02,379 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:29:02,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:29:02,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:29:02,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:29:02,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:29:02,380 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:29:02,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:29:02,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:29:02,381 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:29:02,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:29:02,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:29:02,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:29:02,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:29:02,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:29:02,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:29:02,382 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:29:02,382 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:29:02,382 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:29:02,382 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:29:02,382 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:29:02,382 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:29:02,382 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:29:02,382 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:29:02,382 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:29:02,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:29:02,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:29:02,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:29:02,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:29:02,383 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:29:02,383 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:29:02,383 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:29:02,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:29:02,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:29:02,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:29:02,384 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:29:02,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:29:02,384 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-jdk21/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 -> 5b16c68af06359cf155927d2335a825cd179e6a83a999e1ead7a6952268e92c6 [2025-02-06 18:29:02,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:29:02,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:29:02,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:29:02,656 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:29:02,656 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:29:02,657 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-11.i [2025-02-06 18:29:03,903 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d194eb30c/7f0405b701b14059acf37ff450d1829f/FLAG42ddd19bb [2025-02-06 18:29:04,241 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:29:04,242 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-11.i [2025-02-06 18:29:04,255 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d194eb30c/7f0405b701b14059acf37ff450d1829f/FLAG42ddd19bb [2025-02-06 18:29:04,490 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d194eb30c/7f0405b701b14059acf37ff450d1829f [2025-02-06 18:29:04,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:29:04,495 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:29:04,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:29:04,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:29:04,503 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:29:04,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:29:04" (1/1) ... [2025-02-06 18:29:04,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5726e509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04, skipping insertion in model container [2025-02-06 18:29:04,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:29:04" (1/1) ... [2025-02-06 18:29:04,542 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:29:04,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:29:04,813 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:29:04,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:29:04,868 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:29:04,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04 WrapperNode [2025-02-06 18:29:04,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:29:04,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:29:04,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:29:04,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:29:04,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04" (1/1) ... [2025-02-06 18:29:04,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04" (1/1) ... [2025-02-06 18:29:04,905 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69 [2025-02-06 18:29:04,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:29:04,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:29:04,906 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:29:04,906 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:29:04,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04" (1/1) ... [2025-02-06 18:29:04,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04" (1/1) ... [2025-02-06 18:29:04,917 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04" (1/1) ... [2025-02-06 18:29:04,933 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 18:29:04,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04" (1/1) ... [2025-02-06 18:29:04,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04" (1/1) ... [2025-02-06 18:29:04,937 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04" (1/1) ... [2025-02-06 18:29:04,938 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04" (1/1) ... [2025-02-06 18:29:04,939 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04" (1/1) ... [2025-02-06 18:29:04,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04" (1/1) ... [2025-02-06 18:29:04,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:29:04,945 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:29:04,945 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:29:04,945 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:29:04,946 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04" (1/1) ... [2025-02-06 18:29:04,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:29:04,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:29:04,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:29:04,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:29:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-06 18:29:04,995 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-06 18:29:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-06 18:29:04,995 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-06 18:29:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:29:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:29:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:29:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:29:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:29:04,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:29:04,996 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:29:05,093 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:29:05,094 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:29:05,246 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:29:05,246 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:29:05,343 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:29:05,343 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:29:05,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:29:05 BoogieIcfgContainer [2025-02-06 18:29:05,344 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:29:05,347 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:29:05,347 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:29:05,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:29:05,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:29:04" (1/3) ... [2025-02-06 18:29:05,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2d8f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:29:05, skipping insertion in model container [2025-02-06 18:29:05,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:29:04" (2/3) ... [2025-02-06 18:29:05,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2d8f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:29:05, skipping insertion in model container [2025-02-06 18:29:05,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:29:05" (3/3) ... [2025-02-06 18:29:05,353 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_unsafe-11.i [2025-02-06 18:29:05,364 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:29:05,366 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_unsafe-11.i that has 3 procedures, 42 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-02-06 18:29:05,366 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:29:05,409 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:29:05,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2025-02-06 18:29:05,462 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2025-02-06 18:29:05,464 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:29:05,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 120 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-02-06 18:29:05,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2025-02-06 18:29:05,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2025-02-06 18:29:05,476 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:29:05,487 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;@16e9cc0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:29:05,487 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-02-06 18:29:05,493 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:29:05,494 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-02-06 18:29:05,494 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:29:05,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:05,495 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:05,495 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:05,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:05,499 INFO L85 PathProgramCache]: Analyzing trace with hash 575390525, now seen corresponding path program 1 times [2025-02-06 18:29:05,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:05,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496022223] [2025-02-06 18:29:05,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:05,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:05,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:29:05,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:29:05,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:05,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:05,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:05,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496022223] [2025-02-06 18:29:05,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496022223] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:05,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:29:05,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:29:05,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513521277] [2025-02-06 18:29:05,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:05,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:29:05,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:05,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:29:05,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:29:05,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-06 18:29:05,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:05,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:05,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-06 18:29:05,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:05,989 INFO L124 PetriNetUnfolderBase]: 785/1522 cut-off events. [2025-02-06 18:29:05,989 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 18:29:05,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2733 conditions, 1522 events. 785/1522 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9427 event pairs, 188 based on Foata normal form. 0/1146 useless extension candidates. Maximal degree in co-relation 2717. Up to 612 conditions per place. [2025-02-06 18:29:06,006 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 49 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2025-02-06 18:29:06,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 259 flow [2025-02-06 18:29:06,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:29:06,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:29:06,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2025-02-06 18:29:06,015 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2025-02-06 18:29:06,016 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 134 transitions. [2025-02-06 18:29:06,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 259 flow [2025-02-06 18:29:06,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:29:06,021 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2025-02-06 18:29:06,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2025-02-06 18:29:06,024 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2025-02-06 18:29:06,024 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2025-02-06 18:29:06,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:06,025 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:06,025 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:06,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:29:06,025 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:06,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:06,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1129395496, now seen corresponding path program 1 times [2025-02-06 18:29:06,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:06,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560205493] [2025-02-06 18:29:06,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:06,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:06,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:29:06,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:29:06,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:06,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:06,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:06,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:06,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560205493] [2025-02-06 18:29:06,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560205493] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:06,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:29:06,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:29:06,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599982496] [2025-02-06 18:29:06,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:06,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:29:06,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:06,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:29:06,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:29:06,120 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-02-06 18:29:06,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:06,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:06,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-02-06 18:29:06,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:06,341 INFO L124 PetriNetUnfolderBase]: 1425/2717 cut-off events. [2025-02-06 18:29:06,341 INFO L125 PetriNetUnfolderBase]: For 407/407 co-relation queries the response was YES. [2025-02-06 18:29:06,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5725 conditions, 2717 events. 1425/2717 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 19076 event pairs, 486 based on Foata normal form. 53/2299 useless extension candidates. Maximal degree in co-relation 5707. Up to 1217 conditions per place. [2025-02-06 18:29:06,353 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 46 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2025-02-06 18:29:06,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 64 transitions, 273 flow [2025-02-06 18:29:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:29:06,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:29:06,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-02-06 18:29:06,355 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-02-06 18:29:06,356 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 3 states and 97 transitions. [2025-02-06 18:29:06,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 64 transitions, 273 flow [2025-02-06 18:29:06,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:29:06,357 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 131 flow [2025-02-06 18:29:06,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2025-02-06 18:29:06,357 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2025-02-06 18:29:06,357 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 131 flow [2025-02-06 18:29:06,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:06,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:06,358 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:06,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:29:06,358 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:06,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:06,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1100476575, now seen corresponding path program 1 times [2025-02-06 18:29:06,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:06,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889027983] [2025-02-06 18:29:06,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:06,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:06,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:29:06,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:29:06,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:06,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:06,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:06,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:06,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889027983] [2025-02-06 18:29:06,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889027983] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:06,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:29:06,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:29:06,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209524768] [2025-02-06 18:29:06,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:06,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:29:06,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:06,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:29:06,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:29:06,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-06 18:29:06,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:06,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:06,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-06 18:29:06,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:06,686 INFO L124 PetriNetUnfolderBase]: 1745/3008 cut-off events. [2025-02-06 18:29:06,686 INFO L125 PetriNetUnfolderBase]: For 544/594 co-relation queries the response was YES. [2025-02-06 18:29:06,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6811 conditions, 3008 events. 1745/3008 cut-off events. For 544/594 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 18988 event pairs, 453 based on Foata normal form. 144/2630 useless extension candidates. Maximal degree in co-relation 6790. Up to 1535 conditions per place. [2025-02-06 18:29:06,696 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 63 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2025-02-06 18:29:06,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 361 flow [2025-02-06 18:29:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:29:06,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:29:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2025-02-06 18:29:06,698 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-02-06 18:29:06,698 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 131 flow. Second operand 4 states and 128 transitions. [2025-02-06 18:29:06,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 361 flow [2025-02-06 18:29:06,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 357 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:29:06,700 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2025-02-06 18:29:06,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2025-02-06 18:29:06,701 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2025-02-06 18:29:06,701 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2025-02-06 18:29:06,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:06,701 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:06,701 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:06,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:29:06,701 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:06,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:06,702 INFO L85 PathProgramCache]: Analyzing trace with hash -651521824, now seen corresponding path program 1 times [2025-02-06 18:29:06,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:06,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285491496] [2025-02-06 18:29:06,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:06,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:06,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:29:06,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:29:06,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:06,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:06,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:06,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285491496] [2025-02-06 18:29:06,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285491496] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:06,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:29:06,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:29:06,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134464516] [2025-02-06 18:29:06,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:06,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:29:06,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:06,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:29:06,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:29:06,735 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-02-06 18:29:06,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:06,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:06,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-02-06 18:29:06,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:06,923 INFO L124 PetriNetUnfolderBase]: 1381/2582 cut-off events. [2025-02-06 18:29:06,923 INFO L125 PetriNetUnfolderBase]: For 724/910 co-relation queries the response was YES. [2025-02-06 18:29:06,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5976 conditions, 2582 events. 1381/2582 cut-off events. For 724/910 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17917 event pairs, 468 based on Foata normal form. 102/2213 useless extension candidates. Maximal degree in co-relation 5952. Up to 1179 conditions per place. [2025-02-06 18:29:06,936 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 48 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2025-02-06 18:29:06,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 318 flow [2025-02-06 18:29:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:29:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:29:06,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-02-06 18:29:06,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-02-06 18:29:06,937 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 97 transitions. [2025-02-06 18:29:06,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 318 flow [2025-02-06 18:29:06,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:29:06,939 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2025-02-06 18:29:06,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2025-02-06 18:29:06,940 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2025-02-06 18:29:06,940 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2025-02-06 18:29:06,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:06,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:06,940 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:06,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:29:06,941 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:06,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:06,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1304196917, now seen corresponding path program 1 times [2025-02-06 18:29:06,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:06,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718066725] [2025-02-06 18:29:06,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:06,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:06,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:29:06,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:29:06,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:06,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:06,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:06,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:06,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718066725] [2025-02-06 18:29:06,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718066725] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:06,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:29:06,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:29:06,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523645900] [2025-02-06 18:29:06,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:06,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:29:06,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:06,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:29:06,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:29:06,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-06 18:29:06,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:06,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:06,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-06 18:29:06,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:07,348 INFO L124 PetriNetUnfolderBase]: 2577/4479 cut-off events. [2025-02-06 18:29:07,349 INFO L125 PetriNetUnfolderBase]: For 1559/2051 co-relation queries the response was YES. [2025-02-06 18:29:07,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10688 conditions, 4479 events. 2577/4479 cut-off events. For 1559/2051 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 30852 event pairs, 577 based on Foata normal form. 317/4073 useless extension candidates. Maximal degree in co-relation 10662. Up to 2501 conditions per place. [2025-02-06 18:29:07,374 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2025-02-06 18:29:07,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 413 flow [2025-02-06 18:29:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:29:07,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:29:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-02-06 18:29:07,376 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-02-06 18:29:07,376 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 124 transitions. [2025-02-06 18:29:07,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 413 flow [2025-02-06 18:29:07,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:29:07,378 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2025-02-06 18:29:07,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2025-02-06 18:29:07,379 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-02-06 18:29:07,379 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2025-02-06 18:29:07,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:07,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:07,379 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:07,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:29:07,380 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:07,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:07,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1277660195, now seen corresponding path program 1 times [2025-02-06 18:29:07,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:07,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642068088] [2025-02-06 18:29:07,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:07,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:07,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:29:07,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:29:07,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:07,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:07,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:07,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642068088] [2025-02-06 18:29:07,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642068088] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:07,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:29:07,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:29:07,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812758300] [2025-02-06 18:29:07,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:07,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:29:07,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:07,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:29:07,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:29:07,463 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-02-06 18:29:07,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:07,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:07,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-02-06 18:29:07,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:07,708 INFO L124 PetriNetUnfolderBase]: 1777/3395 cut-off events. [2025-02-06 18:29:07,709 INFO L125 PetriNetUnfolderBase]: For 1293/1827 co-relation queries the response was YES. [2025-02-06 18:29:07,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8347 conditions, 3395 events. 1777/3395 cut-off events. For 1293/1827 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 24843 event pairs, 227 based on Foata normal form. 355/3109 useless extension candidates. Maximal degree in co-relation 8319. Up to 1937 conditions per place. [2025-02-06 18:29:07,723 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2025-02-06 18:29:07,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 451 flow [2025-02-06 18:29:07,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:29:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:29:07,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-02-06 18:29:07,724 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-02-06 18:29:07,724 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 124 transitions. [2025-02-06 18:29:07,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 451 flow [2025-02-06 18:29:07,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:29:07,727 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2025-02-06 18:29:07,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2025-02-06 18:29:07,727 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2025-02-06 18:29:07,727 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2025-02-06 18:29:07,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:07,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:07,727 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:07,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:29:07,728 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:07,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1749870056, now seen corresponding path program 1 times [2025-02-06 18:29:07,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:07,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140680062] [2025-02-06 18:29:07,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:07,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:07,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:29:07,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:29:07,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:07,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:07,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:07,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140680062] [2025-02-06 18:29:07,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140680062] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:07,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:29:07,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:29:07,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779834769] [2025-02-06 18:29:07,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:07,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:29:07,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:07,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:29:07,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:29:07,779 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-06 18:29:07,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:07,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:07,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-06 18:29:07,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:07,959 INFO L124 PetriNetUnfolderBase]: 1279/2491 cut-off events. [2025-02-06 18:29:07,959 INFO L125 PetriNetUnfolderBase]: For 1526/1863 co-relation queries the response was YES. [2025-02-06 18:29:07,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 2491 events. 1279/2491 cut-off events. For 1526/1863 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16934 event pairs, 183 based on Foata normal form. 40/2168 useless extension candidates. Maximal degree in co-relation 6711. Up to 954 conditions per place. [2025-02-06 18:29:07,971 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 69 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2025-02-06 18:29:07,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 513 flow [2025-02-06 18:29:07,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:29:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:29:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2025-02-06 18:29:07,972 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-02-06 18:29:07,972 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 160 transitions. [2025-02-06 18:29:07,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 513 flow [2025-02-06 18:29:07,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 503 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:29:07,976 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2025-02-06 18:29:07,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2025-02-06 18:29:07,977 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2025-02-06 18:29:07,977 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2025-02-06 18:29:07,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:07,977 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:07,977 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:07,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:29:07,977 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:07,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:07,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1115148775, now seen corresponding path program 1 times [2025-02-06 18:29:07,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:07,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085261696] [2025-02-06 18:29:07,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:07,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:07,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:29:07,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:29:07,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:07,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:08,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:08,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085261696] [2025-02-06 18:29:08,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085261696] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:08,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:29:08,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:29:08,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498134232] [2025-02-06 18:29:08,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:08,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:29:08,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:08,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:29:08,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:29:08,057 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-06 18:29:08,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:08,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:08,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-06 18:29:08,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:08,233 INFO L124 PetriNetUnfolderBase]: 1331/2637 cut-off events. [2025-02-06 18:29:08,233 INFO L125 PetriNetUnfolderBase]: For 1957/2223 co-relation queries the response was YES. [2025-02-06 18:29:08,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7445 conditions, 2637 events. 1331/2637 cut-off events. For 1957/2223 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 18315 event pairs, 255 based on Foata normal form. 82/2540 useless extension candidates. Maximal degree in co-relation 7412. Up to 1260 conditions per place. [2025-02-06 18:29:08,252 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 69 selfloop transitions, 7 changer transitions 0/95 dead transitions. [2025-02-06 18:29:08,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 534 flow [2025-02-06 18:29:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:29:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:29:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2025-02-06 18:29:08,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2025-02-06 18:29:08,254 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 161 transitions. [2025-02-06 18:29:08,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 534 flow [2025-02-06 18:29:08,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 523 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:29:08,262 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2025-02-06 18:29:08,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2025-02-06 18:29:08,263 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2025-02-06 18:29:08,263 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2025-02-06 18:29:08,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:08,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:08,263 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:08,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:29:08,264 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:08,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:08,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1114810856, now seen corresponding path program 1 times [2025-02-06 18:29:08,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:08,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425275917] [2025-02-06 18:29:08,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:08,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:08,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:29:08,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:29:08,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:08,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:08,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:08,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425275917] [2025-02-06 18:29:08,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425275917] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:08,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:29:08,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:29:08,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783507454] [2025-02-06 18:29:08,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:08,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:29:08,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:08,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:29:08,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:29:08,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-06 18:29:08,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:08,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:08,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-06 18:29:08,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:08,492 INFO L124 PetriNetUnfolderBase]: 1187/2365 cut-off events. [2025-02-06 18:29:08,492 INFO L125 PetriNetUnfolderBase]: For 2368/2607 co-relation queries the response was YES. [2025-02-06 18:29:08,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6984 conditions, 2365 events. 1187/2365 cut-off events. For 2368/2607 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16128 event pairs, 303 based on Foata normal form. 80/2290 useless extension candidates. Maximal degree in co-relation 6950. Up to 1384 conditions per place. [2025-02-06 18:29:08,504 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 56 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2025-02-06 18:29:08,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 464 flow [2025-02-06 18:29:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:29:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:29:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2025-02-06 18:29:08,505 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6636363636363637 [2025-02-06 18:29:08,505 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 146 transitions. [2025-02-06 18:29:08,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 464 flow [2025-02-06 18:29:08,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 80 transitions, 449 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-06 18:29:08,510 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2025-02-06 18:29:08,510 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2025-02-06 18:29:08,511 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2025-02-06 18:29:08,511 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2025-02-06 18:29:08,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:08,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:08,512 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:08,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:29:08,512 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:08,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:08,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1114810855, now seen corresponding path program 1 times [2025-02-06 18:29:08,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:08,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349206116] [2025-02-06 18:29:08,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:08,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:08,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:29:08,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:29:08,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:08,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:08,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:08,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349206116] [2025-02-06 18:29:08,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349206116] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:08,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:29:08,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:29:08,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520404964] [2025-02-06 18:29:08,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:08,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:29:08,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:08,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:29:08,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:29:08,571 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-06 18:29:08,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:08,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:08,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-06 18:29:08,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:08,755 INFO L124 PetriNetUnfolderBase]: 1235/2453 cut-off events. [2025-02-06 18:29:08,755 INFO L125 PetriNetUnfolderBase]: For 2793/3041 co-relation queries the response was YES. [2025-02-06 18:29:08,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7311 conditions, 2453 events. 1235/2453 cut-off events. For 2793/3041 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16657 event pairs, 295 based on Foata normal form. 80/2434 useless extension candidates. Maximal degree in co-relation 7276. Up to 1400 conditions per place. [2025-02-06 18:29:08,767 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 66 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2025-02-06 18:29:08,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 538 flow [2025-02-06 18:29:08,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:29:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:29:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2025-02-06 18:29:08,768 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7136363636363636 [2025-02-06 18:29:08,768 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 157 transitions. [2025-02-06 18:29:08,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 538 flow [2025-02-06 18:29:08,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 92 transitions, 524 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:29:08,772 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2025-02-06 18:29:08,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2025-02-06 18:29:08,773 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2025-02-06 18:29:08,773 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2025-02-06 18:29:08,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:08,774 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:08,774 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:08,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:29:08,774 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:08,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:08,774 INFO L85 PathProgramCache]: Analyzing trace with hash 774894829, now seen corresponding path program 1 times [2025-02-06 18:29:08,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:08,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317058473] [2025-02-06 18:29:08,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:08,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:08,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:29:08,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:29:08,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:08,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:08,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:08,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317058473] [2025-02-06 18:29:08,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317058473] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:29:08,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760827256] [2025-02-06 18:29:08,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:08,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:08,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:29:08,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:29:08,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:29:08,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:29:08,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:29:08,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:08,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:08,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:29:08,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:29:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:09,012 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:29:09,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760827256] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:09,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:29:09,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-02-06 18:29:09,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390132800] [2025-02-06 18:29:09,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:09,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:29:09,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:09,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:29:09,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:29:09,020 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-02-06 18:29:09,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:09,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:09,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-02-06 18:29:09,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:09,158 INFO L124 PetriNetUnfolderBase]: 1235/2574 cut-off events. [2025-02-06 18:29:09,158 INFO L125 PetriNetUnfolderBase]: For 4215/4546 co-relation queries the response was YES. [2025-02-06 18:29:09,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7678 conditions, 2574 events. 1235/2574 cut-off events. For 4215/4546 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 18608 event pairs, 187 based on Foata normal form. 188/2677 useless extension candidates. Maximal degree in co-relation 7643. Up to 1444 conditions per place. [2025-02-06 18:29:09,168 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 57 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2025-02-06 18:29:09,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 515 flow [2025-02-06 18:29:09,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:29:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:29:09,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-02-06 18:29:09,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6306818181818182 [2025-02-06 18:29:09,170 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 4 states and 111 transitions. [2025-02-06 18:29:09,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 515 flow [2025-02-06 18:29:09,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 495 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-06 18:29:09,175 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 254 flow [2025-02-06 18:29:09,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2025-02-06 18:29:09,176 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2025-02-06 18:29:09,176 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 254 flow [2025-02-06 18:29:09,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:09,176 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:09,176 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:09,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:29:09,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-06 18:29:09,377 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:09,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:09,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1305596489, now seen corresponding path program 1 times [2025-02-06 18:29:09,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:09,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946262494] [2025-02-06 18:29:09,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:09,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:09,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:29:09,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:29:09,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:09,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:09,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:09,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946262494] [2025-02-06 18:29:09,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946262494] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:29:09,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987991125] [2025-02-06 18:29:09,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:09,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:09,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:29:09,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:29:09,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:29:09,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:29:09,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:29:09,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:09,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:09,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:29:09,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:29:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:09,492 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:29:09,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987991125] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:09,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:29:09,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:29:09,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043782911] [2025-02-06 18:29:09,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:09,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:29:09,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:09,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:29:09,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:29:09,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-06 18:29:09,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:09,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:09,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-06 18:29:09,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:09,726 INFO L124 PetriNetUnfolderBase]: 1657/2934 cut-off events. [2025-02-06 18:29:09,727 INFO L125 PetriNetUnfolderBase]: For 4829/5215 co-relation queries the response was YES. [2025-02-06 18:29:09,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9348 conditions, 2934 events. 1657/2934 cut-off events. For 4829/5215 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 19080 event pairs, 359 based on Foata normal form. 154/2976 useless extension candidates. Maximal degree in co-relation 9313. Up to 1194 conditions per place. [2025-02-06 18:29:09,737 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2025-02-06 18:29:09,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 696 flow [2025-02-06 18:29:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:29:09,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:29:09,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2025-02-06 18:29:09,738 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2025-02-06 18:29:09,738 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 254 flow. Second operand 6 states and 170 transitions. [2025-02-06 18:29:09,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 696 flow [2025-02-06 18:29:09,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 109 transitions, 690 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:29:09,742 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 257 flow [2025-02-06 18:29:09,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2025-02-06 18:29:09,743 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2025-02-06 18:29:09,743 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 257 flow [2025-02-06 18:29:09,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:09,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:09,743 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:09,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 18:29:09,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:09,947 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:09,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:09,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1748063893, now seen corresponding path program 1 times [2025-02-06 18:29:09,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:09,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016320870] [2025-02-06 18:29:09,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:09,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:09,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:29:09,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:29:09,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:09,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:09,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:09,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016320870] [2025-02-06 18:29:09,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016320870] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:29:09,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478901543] [2025-02-06 18:29:09,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:09,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:09,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:29:09,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:29:09,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:29:10,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:29:10,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:29:10,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:10,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:10,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:29:10,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:29:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:10,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:29:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:10,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478901543] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:29:10,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:29:10,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-02-06 18:29:10,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556156897] [2025-02-06 18:29:10,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:29:10,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:29:10,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:10,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:29:10,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:29:10,125 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-02-06 18:29:10,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 257 flow. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:10,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:10,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-02-06 18:29:10,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:10,564 INFO L124 PetriNetUnfolderBase]: 3515/6816 cut-off events. [2025-02-06 18:29:10,564 INFO L125 PetriNetUnfolderBase]: For 12491/13229 co-relation queries the response was YES. [2025-02-06 18:29:10,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20669 conditions, 6816 events. 3515/6816 cut-off events. For 12491/13229 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 52554 event pairs, 187 based on Foata normal form. 399/7130 useless extension candidates. Maximal degree in co-relation 20634. Up to 1445 conditions per place. [2025-02-06 18:29:10,590 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 135 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2025-02-06 18:29:10,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 156 transitions, 1105 flow [2025-02-06 18:29:10,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:29:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:29:10,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2025-02-06 18:29:10,591 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2025-02-06 18:29:10,592 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 257 flow. Second operand 6 states and 195 transitions. [2025-02-06 18:29:10,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 156 transitions, 1105 flow [2025-02-06 18:29:10,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 156 transitions, 1096 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:29:10,597 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2025-02-06 18:29:10,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2025-02-06 18:29:10,598 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-02-06 18:29:10,598 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2025-02-06 18:29:10,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:10,598 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:10,598 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:10,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 18:29:10,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:10,799 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:10,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:10,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1818785722, now seen corresponding path program 1 times [2025-02-06 18:29:10,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:10,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194701614] [2025-02-06 18:29:10,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:10,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:10,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:29:10,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:29:10,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:10,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:29:10,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:10,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194701614] [2025-02-06 18:29:10,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194701614] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:10,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:29:10,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:29:10,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680804824] [2025-02-06 18:29:10,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:10,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:29:10,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:10,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:29:10,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:29:10,827 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2025-02-06 18:29:10,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:10,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:10,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2025-02-06 18:29:10,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:11,310 INFO L124 PetriNetUnfolderBase]: 5001/8505 cut-off events. [2025-02-06 18:29:11,311 INFO L125 PetriNetUnfolderBase]: For 15687/16715 co-relation queries the response was YES. [2025-02-06 18:29:11,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27806 conditions, 8505 events. 5001/8505 cut-off events. For 15687/16715 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 59225 event pairs, 2581 based on Foata normal form. 390/8728 useless extension candidates. Maximal degree in co-relation 27768. Up to 4789 conditions per place. [2025-02-06 18:29:11,336 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 82 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2025-02-06 18:29:11,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 101 transitions, 696 flow [2025-02-06 18:29:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:29:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:29:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-02-06 18:29:11,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6647727272727273 [2025-02-06 18:29:11,337 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 4 states and 117 transitions. [2025-02-06 18:29:11,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 101 transitions, 696 flow [2025-02-06 18:29:11,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 660 flow, removed 13 selfloop flow, removed 3 redundant places. [2025-02-06 18:29:11,346 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2025-02-06 18:29:11,346 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2025-02-06 18:29:11,346 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-02-06 18:29:11,346 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2025-02-06 18:29:11,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:11,346 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:11,347 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:11,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 18:29:11,347 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:11,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:11,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1619614784, now seen corresponding path program 1 times [2025-02-06 18:29:11,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:11,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271612953] [2025-02-06 18:29:11,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:11,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:11,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:29:11,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:29:11,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:11,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:29:11,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:11,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271612953] [2025-02-06 18:29:11,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271612953] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:29:11,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145443166] [2025-02-06 18:29:11,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:11,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:11,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:29:11,384 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:29:11,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:29:11,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:29:11,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:29:11,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:11,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:11,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:29:11,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:29:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:29:11,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:29:11,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145443166] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:11,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:29:11,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:29:11,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949038206] [2025-02-06 18:29:11,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:11,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:29:11,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:11,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:29:11,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:29:11,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-06 18:29:11,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:11,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:11,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-06 18:29:11,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:11,900 INFO L124 PetriNetUnfolderBase]: 4507/7873 cut-off events. [2025-02-06 18:29:11,900 INFO L125 PetriNetUnfolderBase]: For 15589/16012 co-relation queries the response was YES. [2025-02-06 18:29:11,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25268 conditions, 7873 events. 4507/7873 cut-off events. For 15589/16012 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 56470 event pairs, 999 based on Foata normal form. 198/7823 useless extension candidates. Maximal degree in co-relation 25230. Up to 3212 conditions per place. [2025-02-06 18:29:11,927 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 96 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2025-02-06 18:29:11,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 114 transitions, 787 flow [2025-02-06 18:29:11,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:29:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:29:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2025-02-06 18:29:11,928 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2025-02-06 18:29:11,928 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 6 states and 164 transitions. [2025-02-06 18:29:11,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 114 transitions, 787 flow [2025-02-06 18:29:11,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 773 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:29:11,937 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 286 flow [2025-02-06 18:29:11,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2025-02-06 18:29:11,937 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2025-02-06 18:29:11,937 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 286 flow [2025-02-06 18:29:11,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:11,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:11,938 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:11,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 18:29:12,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-06 18:29:12,138 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:12,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:12,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1644594424, now seen corresponding path program 1 times [2025-02-06 18:29:12,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:12,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224695646] [2025-02-06 18:29:12,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:12,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:12,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:29:12,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:29:12,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:12,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:29:12,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:12,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224695646] [2025-02-06 18:29:12,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224695646] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:29:12,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400055155] [2025-02-06 18:29:12,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:12,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:12,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:29:12,185 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:29:12,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 18:29:12,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:29:12,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:29:12,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:12,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:12,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:29:12,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:29:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:29:12,244 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:29:12,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400055155] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:12,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:29:12,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:29:12,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175318932] [2025-02-06 18:29:12,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:12,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:29:12,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:12,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:29:12,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:29:12,252 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-02-06 18:29:12,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:12,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:12,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-02-06 18:29:12,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:12,778 INFO L124 PetriNetUnfolderBase]: 3819/6874 cut-off events. [2025-02-06 18:29:12,779 INFO L125 PetriNetUnfolderBase]: For 14623/14830 co-relation queries the response was YES. [2025-02-06 18:29:12,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22408 conditions, 6874 events. 3819/6874 cut-off events. For 14623/14830 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 50458 event pairs, 187 based on Foata normal form. 228/6810 useless extension candidates. Maximal degree in co-relation 22369. Up to 3648 conditions per place. [2025-02-06 18:29:12,811 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 99 selfloop transitions, 8 changer transitions 0/121 dead transitions. [2025-02-06 18:29:12,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 121 transitions, 901 flow [2025-02-06 18:29:12,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:29:12,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:29:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2025-02-06 18:29:12,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6325757575757576 [2025-02-06 18:29:12,812 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 286 flow. Second operand 6 states and 167 transitions. [2025-02-06 18:29:12,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 121 transitions, 901 flow [2025-02-06 18:29:12,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 121 transitions, 893 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:29:12,821 INFO L231 Difference]: Finished difference. Result has 82 places, 55 transitions, 293 flow [2025-02-06 18:29:12,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=82, PETRI_TRANSITIONS=55} [2025-02-06 18:29:12,822 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2025-02-06 18:29:12,822 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 55 transitions, 293 flow [2025-02-06 18:29:12,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:12,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:12,822 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:12,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 18:29:13,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-06 18:29:13,024 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:13,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:13,025 INFO L85 PathProgramCache]: Analyzing trace with hash -642971787, now seen corresponding path program 1 times [2025-02-06 18:29:13,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:13,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718339662] [2025-02-06 18:29:13,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:13,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:13,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:29:13,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:29:13,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:13,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:13,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:13,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:13,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718339662] [2025-02-06 18:29:13,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718339662] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:29:13,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450191130] [2025-02-06 18:29:13,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:13,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:13,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:29:13,108 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:29:13,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 18:29:13,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:29:13,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:29:13,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:13,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:13,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:29:13,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:29:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:13,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:29:13,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:13,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450191130] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:29:13,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:29:13,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-02-06 18:29:13,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496681424] [2025-02-06 18:29:13,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:29:13,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 18:29:13,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:13,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 18:29:13,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-02-06 18:29:13,271 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-06 18:29:13,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 55 transitions, 293 flow. Second operand has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:13,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:13,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-06 18:29:13,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:13,985 INFO L124 PetriNetUnfolderBase]: 4661/8863 cut-off events. [2025-02-06 18:29:13,985 INFO L125 PetriNetUnfolderBase]: For 20308/20722 co-relation queries the response was YES. [2025-02-06 18:29:14,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29715 conditions, 8863 events. 4661/8863 cut-off events. For 20308/20722 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 67541 event pairs, 175 based on Foata normal form. 594/9454 useless extension candidates. Maximal degree in co-relation 29676. Up to 1870 conditions per place. [2025-02-06 18:29:14,019 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 147 selfloop transitions, 20 changer transitions 0/182 dead transitions. [2025-02-06 18:29:14,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 182 transitions, 1351 flow [2025-02-06 18:29:14,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 18:29:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 18:29:14,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 349 transitions. [2025-02-06 18:29:14,021 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6609848484848485 [2025-02-06 18:29:14,021 INFO L175 Difference]: Start difference. First operand has 82 places, 55 transitions, 293 flow. Second operand 12 states and 349 transitions. [2025-02-06 18:29:14,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 182 transitions, 1351 flow [2025-02-06 18:29:14,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 182 transitions, 1321 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:29:14,039 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 436 flow [2025-02-06 18:29:14,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=436, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2025-02-06 18:29:14,039 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2025-02-06 18:29:14,039 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 436 flow [2025-02-06 18:29:14,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:14,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:14,040 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:14,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 18:29:14,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-06 18:29:14,240 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:14,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:14,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1537557922, now seen corresponding path program 1 times [2025-02-06 18:29:14,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:14,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332834562] [2025-02-06 18:29:14,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:14,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:14,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:29:14,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:29:14,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:14,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:14,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:14,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332834562] [2025-02-06 18:29:14,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332834562] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:29:14,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123074389] [2025-02-06 18:29:14,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:14,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:14,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:29:14,289 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:29:14,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 18:29:14,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:29:14,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:29:14,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:14,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:14,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:29:14,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:29:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:14,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:29:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:29:14,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123074389] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:29:14,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:29:14,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-02-06 18:29:14,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115556321] [2025-02-06 18:29:14,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:29:14,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 18:29:14,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:14,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 18:29:14,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2025-02-06 18:29:14,423 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-06 18:29:14,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 436 flow. Second operand has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:14,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:14,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-06 18:29:14,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:16,236 INFO L124 PetriNetUnfolderBase]: 12859/25293 cut-off events. [2025-02-06 18:29:16,236 INFO L125 PetriNetUnfolderBase]: For 108270/109456 co-relation queries the response was YES. [2025-02-06 18:29:16,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92833 conditions, 25293 events. 12859/25293 cut-off events. For 108270/109456 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 231114 event pairs, 571 based on Foata normal form. 1674/26876 useless extension candidates. Maximal degree in co-relation 92788. Up to 5827 conditions per place. [2025-02-06 18:29:16,363 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 356 selfloop transitions, 54 changer transitions 0/425 dead transitions. [2025-02-06 18:29:16,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 425 transitions, 3448 flow [2025-02-06 18:29:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-06 18:29:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-06 18:29:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 748 transitions. [2025-02-06 18:29:16,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2025-02-06 18:29:16,367 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 436 flow. Second operand 24 states and 748 transitions. [2025-02-06 18:29:16,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 425 transitions, 3448 flow [2025-02-06 18:29:16,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 425 transitions, 3319 flow, removed 53 selfloop flow, removed 6 redundant places. [2025-02-06 18:29:16,637 INFO L231 Difference]: Finished difference. Result has 122 places, 110 transitions, 1065 flow [2025-02-06 18:29:16,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1065, PETRI_PLACES=122, PETRI_TRANSITIONS=110} [2025-02-06 18:29:16,638 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 76 predicate places. [2025-02-06 18:29:16,638 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 110 transitions, 1065 flow [2025-02-06 18:29:16,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:16,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:16,638 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:16,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 18:29:16,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:16,842 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:16,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:16,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1331549010, now seen corresponding path program 1 times [2025-02-06 18:29:16,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:16,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690574525] [2025-02-06 18:29:16,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:16,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:16,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:29:16,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:29:16,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:16,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:16,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:29:16,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690574525] [2025-02-06 18:29:16,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690574525] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:16,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:29:16,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:29:16,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266966859] [2025-02-06 18:29:16,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:16,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:29:16,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:16,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:29:16,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:29:16,882 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2025-02-06 18:29:16,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 110 transitions, 1065 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:16,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:16,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2025-02-06 18:29:16,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:19,801 INFO L124 PetriNetUnfolderBase]: 20427/34219 cut-off events. [2025-02-06 18:29:19,802 INFO L125 PetriNetUnfolderBase]: For 169964/171158 co-relation queries the response was YES. [2025-02-06 18:29:19,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138688 conditions, 34219 events. 20427/34219 cut-off events. For 169964/171158 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 283639 event pairs, 7233 based on Foata normal form. 1188/35029 useless extension candidates. Maximal degree in co-relation 138630. Up to 15315 conditions per place. [2025-02-06 18:29:20,023 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 171 selfloop transitions, 6 changer transitions 0/188 dead transitions. [2025-02-06 18:29:20,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 188 transitions, 2157 flow [2025-02-06 18:29:20,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:29:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:29:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-02-06 18:29:20,025 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2025-02-06 18:29:20,025 INFO L175 Difference]: Start difference. First operand has 122 places, 110 transitions, 1065 flow. Second operand 4 states and 109 transitions. [2025-02-06 18:29:20,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 188 transitions, 2157 flow [2025-02-06 18:29:20,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 188 transitions, 1810 flow, removed 145 selfloop flow, removed 8 redundant places. [2025-02-06 18:29:20,558 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 862 flow [2025-02-06 18:29:20,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=862, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2025-02-06 18:29:20,558 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2025-02-06 18:29:20,558 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 862 flow [2025-02-06 18:29:20,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:20,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:20,559 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:20,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-06 18:29:20,559 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:20,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash -557180205, now seen corresponding path program 1 times [2025-02-06 18:29:20,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:20,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997938891] [2025-02-06 18:29:20,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:20,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:20,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:29:20,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:29:20,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:20,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 18:29:20,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:20,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997938891] [2025-02-06 18:29:20,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997938891] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:29:20,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:29:20,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:29:20,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79371930] [2025-02-06 18:29:20,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:29:20,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:29:20,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:20,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:29:20,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:29:20,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-02-06 18:29:20,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 862 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:20,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:20,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-02-06 18:29:20,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:23,079 INFO L124 PetriNetUnfolderBase]: 15774/26140 cut-off events. [2025-02-06 18:29:23,080 INFO L125 PetriNetUnfolderBase]: For 149659/149659 co-relation queries the response was YES. [2025-02-06 18:29:23,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104079 conditions, 26140 events. 15774/26140 cut-off events. For 149659/149659 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 209055 event pairs, 2818 based on Foata normal form. 858/26839 useless extension candidates. Maximal degree in co-relation 104024. Up to 13905 conditions per place. [2025-02-06 18:29:23,317 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 242 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2025-02-06 18:29:23,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 264 transitions, 2764 flow [2025-02-06 18:29:23,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:29:23,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:29:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-02-06 18:29:23,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-02-06 18:29:23,321 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 862 flow. Second operand 4 states and 110 transitions. [2025-02-06 18:29:23,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 264 transitions, 2764 flow [2025-02-06 18:29:23,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 264 transitions, 2748 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-06 18:29:23,535 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 872 flow [2025-02-06 18:29:23,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=872, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2025-02-06 18:29:23,535 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2025-02-06 18:29:23,535 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 872 flow [2025-02-06 18:29:23,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:23,535 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:23,536 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:23,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 18:29:23,536 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:23,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:23,536 INFO L85 PathProgramCache]: Analyzing trace with hash -620850343, now seen corresponding path program 1 times [2025-02-06 18:29:23,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:23,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984777177] [2025-02-06 18:29:23,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:23,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:23,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:29:23,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:29:23,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:23,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:29:23,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:23,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984777177] [2025-02-06 18:29:23,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984777177] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:29:23,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475546143] [2025-02-06 18:29:23,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:23,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:23,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:29:23,598 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:29:23,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 18:29:23,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:29:23,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:29:23,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:23,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:23,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:29:23,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:29:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:29:23,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:29:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:29:23,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475546143] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:29:23,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:29:23,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2025-02-06 18:29:23,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237085413] [2025-02-06 18:29:23,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:29:23,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 18:29:23,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:23,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 18:29:23,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2025-02-06 18:29:23,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-06 18:29:23,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 872 flow. Second operand has 17 states, 17 states have (on average 21.529411764705884) internal successors, (366), 17 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:23,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:23,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-06 18:29:23,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:27,160 INFO L124 PetriNetUnfolderBase]: 17303/33357 cut-off events. [2025-02-06 18:29:27,160 INFO L125 PetriNetUnfolderBase]: For 182106/182106 co-relation queries the response was YES. [2025-02-06 18:29:27,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128710 conditions, 33357 events. 17303/33357 cut-off events. For 182106/182106 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 309067 event pairs, 615 based on Foata normal form. 1484/34772 useless extension candidates. Maximal degree in co-relation 128654. Up to 10117 conditions per place. [2025-02-06 18:29:27,470 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 330 selfloop transitions, 56 changer transitions 0/401 dead transitions. [2025-02-06 18:29:27,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 401 transitions, 3465 flow [2025-02-06 18:29:27,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 18:29:27,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-06 18:29:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 649 transitions. [2025-02-06 18:29:27,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-02-06 18:29:27,475 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 872 flow. Second operand 21 states and 649 transitions. [2025-02-06 18:29:27,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 401 transitions, 3465 flow [2025-02-06 18:29:28,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 401 transitions, 3241 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-06 18:29:28,117 INFO L231 Difference]: Finished difference. Result has 139 places, 126 transitions, 1198 flow [2025-02-06 18:29:28,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1198, PETRI_PLACES=139, PETRI_TRANSITIONS=126} [2025-02-06 18:29:28,118 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 93 predicate places. [2025-02-06 18:29:28,118 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 126 transitions, 1198 flow [2025-02-06 18:29:28,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.529411764705884) internal successors, (366), 17 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:28,118 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:28,118 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:28,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 18:29:28,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:28,672 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:28,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1384304146, now seen corresponding path program 1 times [2025-02-06 18:29:28,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:28,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135379634] [2025-02-06 18:29:28,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:28,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:28,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 18:29:28,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:29:28,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:28,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:29:28,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:28,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135379634] [2025-02-06 18:29:28,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135379634] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:29:28,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088904416] [2025-02-06 18:29:28,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:28,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:28,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:29:28,753 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:29:28,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 18:29:28,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 18:29:28,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:29:28,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:28,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:28,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 18:29:28,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:29:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:29:28,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:29:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:29:28,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088904416] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:29:28,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:29:28,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-02-06 18:29:28,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16653507] [2025-02-06 18:29:28,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:29:28,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 18:29:28,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:28,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 18:29:28,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2025-02-06 18:29:28,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-06 18:29:28,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 126 transitions, 1198 flow. Second operand has 20 states, 20 states have (on average 21.45) internal successors, (429), 20 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:28,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:28,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-06 18:29:28,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:36,379 INFO L124 PetriNetUnfolderBase]: 33363/64531 cut-off events. [2025-02-06 18:29:36,379 INFO L125 PetriNetUnfolderBase]: For 632635/632635 co-relation queries the response was YES. [2025-02-06 18:29:36,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255057 conditions, 64531 events. 33363/64531 cut-off events. For 632635/632635 co-relation queries the response was YES. Maximal size of possible extension queue 1702. Compared 647349 event pairs, 1627 based on Foata normal form. 4180/68598 useless extension candidates. Maximal degree in co-relation 254994. Up to 9339 conditions per place. [2025-02-06 18:29:37,330 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 563 selfloop transitions, 124 changer transitions 0/702 dead transitions. [2025-02-06 18:29:37,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 702 transitions, 6147 flow [2025-02-06 18:29:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-06 18:29:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-02-06 18:29:37,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1156 transitions. [2025-02-06 18:29:37,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7100737100737101 [2025-02-06 18:29:37,332 INFO L175 Difference]: Start difference. First operand has 139 places, 126 transitions, 1198 flow. Second operand 37 states and 1156 transitions. [2025-02-06 18:29:37,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 702 transitions, 6147 flow [2025-02-06 18:29:39,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 702 transitions, 6033 flow, removed 37 selfloop flow, removed 12 redundant places. [2025-02-06 18:29:39,346 INFO L231 Difference]: Finished difference. Result has 177 places, 188 transitions, 2324 flow [2025-02-06 18:29:39,346 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2324, PETRI_PLACES=177, PETRI_TRANSITIONS=188} [2025-02-06 18:29:39,346 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 131 predicate places. [2025-02-06 18:29:39,346 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 188 transitions, 2324 flow [2025-02-06 18:29:39,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 21.45) internal successors, (429), 20 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:39,347 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:29:39,347 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:29:39,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 18:29:39,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:39,552 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-02-06 18:29:39,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:29:39,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1107482249, now seen corresponding path program 1 times [2025-02-06 18:29:39,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:29:39,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901402087] [2025-02-06 18:29:39,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:39,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:29:39,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 18:29:39,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 18:29:39,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:39,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:29:39,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:29:39,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901402087] [2025-02-06 18:29:39,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901402087] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:29:39,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264795649] [2025-02-06 18:29:39,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:29:39,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:29:39,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:29:39,656 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:29:39,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 18:29:39,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 18:29:39,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 18:29:39,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:29:39,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:29:39,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 18:29:39,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:29:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:29:39,812 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:29:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:29:39,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264795649] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:29:39,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:29:39,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-02-06 18:29:39,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460118776] [2025-02-06 18:29:39,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:29:39,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 18:29:39,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:29:39,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 18:29:39,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2025-02-06 18:29:39,926 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-02-06 18:29:39,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 188 transitions, 2324 flow. Second operand has 23 states, 23 states have (on average 21.391304347826086) internal successors, (492), 23 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:29:39,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:29:39,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-02-06 18:29:39,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:29:56,752 INFO L124 PetriNetUnfolderBase]: 66011/129277 cut-off events. [2025-02-06 18:29:56,752 INFO L125 PetriNetUnfolderBase]: For 1962248/1962248 co-relation queries the response was YES. [2025-02-06 18:29:58,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546998 conditions, 129277 events. 66011/129277 cut-off events. For 1962248/1962248 co-relation queries the response was YES. Maximal size of possible extension queue 3311. Compared 1434023 event pairs, 2111 based on Foata normal form. 4510/133674 useless extension candidates. Maximal degree in co-relation 546918. Up to 16887 conditions per place.