./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:41:32,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:41:32,989 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:41:32,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:41:32,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:41:33,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:41:33,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:41:33,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:41:33,017 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:41:33,018 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:41:33,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:41:33,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:41:33,020 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:41:33,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:41:33,021 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:41:33,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:41:33,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:41:33,023 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:41:33,024 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:41:33,024 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:41:33,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:41:33,027 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:41:33,028 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:41:33,028 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:41:33,028 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:41:33,029 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:41:33,029 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:41:33,029 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:41:33,029 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:41:33,030 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:41:33,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:41:33,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:41:33,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:41:33,031 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:41:33,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:41:33,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:41:33,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:41:33,032 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:41:33,032 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:41:33,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:41:33,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:41:33,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:41:33,034 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:41:33,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:41:33,034 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2024-10-13 16:41:33,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:41:33,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:41:33,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:41:33,327 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:41:33,328 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:41:33,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-10-13 16:41:34,795 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:41:35,023 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:41:35,024 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-10-13 16:41:35,039 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3de5547e4/739e4af9db434221acd163cf77fd2700/FLAG9ce141c10 [2024-10-13 16:41:35,051 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3de5547e4/739e4af9db434221acd163cf77fd2700 [2024-10-13 16:41:35,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:41:35,054 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:41:35,057 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:41:35,057 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:41:35,062 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:41:35,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:41:35" (1/1) ... [2024-10-13 16:41:35,063 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482d46da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35, skipping insertion in model container [2024-10-13 16:41:35,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:41:35" (1/1) ... [2024-10-13 16:41:35,103 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:41:35,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:41:35,495 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:41:35,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:41:35,593 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:41:35,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35 WrapperNode [2024-10-13 16:41:35,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:41:35,595 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:41:35,596 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:41:35,596 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:41:35,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35" (1/1) ... [2024-10-13 16:41:35,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35" (1/1) ... [2024-10-13 16:41:35,649 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 109 [2024-10-13 16:41:35,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:41:35,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:41:35,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:41:35,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:41:35,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35" (1/1) ... [2024-10-13 16:41:35,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35" (1/1) ... [2024-10-13 16:41:35,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35" (1/1) ... [2024-10-13 16:41:35,684 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-10-13 16:41:35,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35" (1/1) ... [2024-10-13 16:41:35,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35" (1/1) ... [2024-10-13 16:41:35,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35" (1/1) ... [2024-10-13 16:41:35,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35" (1/1) ... [2024-10-13 16:41:35,694 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35" (1/1) ... [2024-10-13 16:41:35,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35" (1/1) ... [2024-10-13 16:41:35,698 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:41:35,699 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:41:35,699 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:41:35,699 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:41:35,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35" (1/1) ... [2024-10-13 16:41:35,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:41:35,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:41:35,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:41:35,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:41:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-10-13 16:41:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-10-13 16:41:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:41:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:41:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:41:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:41:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:41:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:41:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:41:35,807 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:41:35,960 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:41:35,963 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:41:36,249 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:41:36,249 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:41:36,374 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:41:36,374 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 16:41:36,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:41:36 BoogieIcfgContainer [2024-10-13 16:41:36,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:41:36,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:41:36,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:41:36,381 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:41:36,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:41:35" (1/3) ... [2024-10-13 16:41:36,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55172dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:41:36, skipping insertion in model container [2024-10-13 16:41:36,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:41:35" (2/3) ... [2024-10-13 16:41:36,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55172dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:41:36, skipping insertion in model container [2024-10-13 16:41:36,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:41:36" (3/3) ... [2024-10-13 16:41:36,384 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2024-10-13 16:41:36,402 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:41:36,403 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-13 16:41:36,403 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:41:36,444 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 16:41:36,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 38 transitions, 80 flow [2024-10-13 16:41:36,502 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2024-10-13 16:41:36,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:41:36,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 5/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-13 16:41:36,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 38 transitions, 80 flow [2024-10-13 16:41:36,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 37 transitions, 77 flow [2024-10-13 16:41:36,519 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:41:36,525 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;@57c489e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:41:36,525 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-13 16:41:36,533 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:41:36,533 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2024-10-13 16:41:36,533 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:41:36,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:36,535 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:41:36,535 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:36,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:36,540 INFO L85 PathProgramCache]: Analyzing trace with hash -178405112, now seen corresponding path program 1 times [2024-10-13 16:41:36,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:36,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224298778] [2024-10-13 16:41:36,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:36,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:36,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:36,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224298778] [2024-10-13 16:41:36,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224298778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:41:36,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:41:36,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:41:36,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201267216] [2024-10-13 16:41:36,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:41:36,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:41:36,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:36,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:41:36,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:41:36,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-10-13 16:41:36,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2024-10-13 16:41:36,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:36,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-10-13 16:41:36,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:37,151 INFO L124 PetriNetUnfolderBase]: 184/403 cut-off events. [2024-10-13 16:41:37,152 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:41:37,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 403 events. 184/403 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1793 event pairs, 14 based on Foata normal form. 4/335 useless extension candidates. Maximal degree in co-relation 729. Up to 222 conditions per place. [2024-10-13 16:41:37,158 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 44 selfloop transitions, 8 changer transitions 1/66 dead transitions. [2024-10-13 16:41:37,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 66 transitions, 241 flow [2024-10-13 16:41:37,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:41:37,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:41:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-10-13 16:41:37,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6947368421052632 [2024-10-13 16:41:37,171 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 77 flow. Second operand 5 states and 132 transitions. [2024-10-13 16:41:37,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 66 transitions, 241 flow [2024-10-13 16:41:37,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 66 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:41:37,176 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 142 flow [2024-10-13 16:41:37,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2024-10-13 16:41:37,185 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2024-10-13 16:41:37,185 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 142 flow [2024-10-13 16:41:37,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2024-10-13 16:41:37,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:37,186 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:41:37,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:41:37,186 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:37,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:37,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1615907721, now seen corresponding path program 1 times [2024-10-13 16:41:37,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:37,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581814504] [2024-10-13 16:41:37,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:37,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:37,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:37,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:37,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581814504] [2024-10-13 16:41:37,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581814504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:41:37,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:41:37,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:41:37,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083180265] [2024-10-13 16:41:37,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:41:37,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:41:37,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:37,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:41:37,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:41:37,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-10-13 16:41:37,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:37,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:37,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-10-13 16:41:37,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:37,599 INFO L124 PetriNetUnfolderBase]: 212/481 cut-off events. [2024-10-13 16:41:37,600 INFO L125 PetriNetUnfolderBase]: For 248/250 co-relation queries the response was YES. [2024-10-13 16:41:37,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 481 events. 212/481 cut-off events. For 248/250 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2223 event pairs, 43 based on Foata normal form. 11/463 useless extension candidates. Maximal degree in co-relation 1134. Up to 285 conditions per place. [2024-10-13 16:41:37,609 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 53 selfloop transitions, 4 changer transitions 1/72 dead transitions. [2024-10-13 16:41:37,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 72 transitions, 356 flow [2024-10-13 16:41:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:41:37,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:41:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-10-13 16:41:37,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7236842105263158 [2024-10-13 16:41:37,613 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 142 flow. Second operand 4 states and 110 transitions. [2024-10-13 16:41:37,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 72 transitions, 356 flow [2024-10-13 16:41:37,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 72 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:41:37,620 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 182 flow [2024-10-13 16:41:37,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2024-10-13 16:41:37,623 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2024-10-13 16:41:37,623 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 182 flow [2024-10-13 16:41:37,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:37,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:37,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:41:37,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:41:37,624 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:37,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:37,625 INFO L85 PathProgramCache]: Analyzing trace with hash 567489290, now seen corresponding path program 1 times [2024-10-13 16:41:37,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:37,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255061882] [2024-10-13 16:41:37,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:37,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:37,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:37,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255061882] [2024-10-13 16:41:37,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255061882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:41:37,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:41:37,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:41:37,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410829461] [2024-10-13 16:41:37,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:41:37,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:41:37,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:37,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:41:37,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:41:37,744 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-10-13 16:41:37,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:37,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:37,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-10-13 16:41:37,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:37,829 INFO L124 PetriNetUnfolderBase]: 96/281 cut-off events. [2024-10-13 16:41:37,830 INFO L125 PetriNetUnfolderBase]: For 211/219 co-relation queries the response was YES. [2024-10-13 16:41:37,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 281 events. 96/281 cut-off events. For 211/219 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1201 event pairs, 27 based on Foata normal form. 11/283 useless extension candidates. Maximal degree in co-relation 662. Up to 110 conditions per place. [2024-10-13 16:41:37,833 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 28 selfloop transitions, 5 changer transitions 3/52 dead transitions. [2024-10-13 16:41:37,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 272 flow [2024-10-13 16:41:37,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:41:37,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:41:37,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-13 16:41:37,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-10-13 16:41:37,837 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 182 flow. Second operand 3 states and 80 transitions. [2024-10-13 16:41:37,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 272 flow [2024-10-13 16:41:37,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:41:37,841 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 150 flow [2024-10-13 16:41:37,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-10-13 16:41:37,842 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2024-10-13 16:41:37,843 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 150 flow [2024-10-13 16:41:37,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:37,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:37,844 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:41:37,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:41:37,844 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:37,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:37,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1190566207, now seen corresponding path program 1 times [2024-10-13 16:41:37,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:37,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575296267] [2024-10-13 16:41:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:37,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:37,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:37,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575296267] [2024-10-13 16:41:37,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575296267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:41:37,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:41:37,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:41:37,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728561754] [2024-10-13 16:41:37,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:41:37,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:41:37,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:37,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:41:37,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:41:37,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-10-13 16:41:37,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:37,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:37,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-10-13 16:41:37,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:38,084 INFO L124 PetriNetUnfolderBase]: 131/354 cut-off events. [2024-10-13 16:41:38,085 INFO L125 PetriNetUnfolderBase]: For 232/245 co-relation queries the response was YES. [2024-10-13 16:41:38,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 354 events. 131/354 cut-off events. For 232/245 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1451 event pairs, 46 based on Foata normal form. 12/350 useless extension candidates. Maximal degree in co-relation 881. Up to 153 conditions per place. [2024-10-13 16:41:38,088 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-10-13 16:41:38,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 58 transitions, 326 flow [2024-10-13 16:41:38,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:41:38,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:41:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-13 16:41:38,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6118421052631579 [2024-10-13 16:41:38,090 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 150 flow. Second operand 4 states and 93 transitions. [2024-10-13 16:41:38,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 58 transitions, 326 flow [2024-10-13 16:41:38,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:41:38,094 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 176 flow [2024-10-13 16:41:38,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-10-13 16:41:38,096 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2024-10-13 16:41:38,096 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 176 flow [2024-10-13 16:41:38,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:38,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:38,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:41:38,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:41:38,098 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:38,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1747153623, now seen corresponding path program 1 times [2024-10-13 16:41:38,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:38,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762016733] [2024-10-13 16:41:38,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:38,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:38,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:38,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762016733] [2024-10-13 16:41:38,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762016733] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:41:38,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:41:38,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:41:38,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911277439] [2024-10-13 16:41:38,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:41:38,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:41:38,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:41:38,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:41:38,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-13 16:41:38,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:38,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:38,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-13 16:41:38,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:38,436 INFO L124 PetriNetUnfolderBase]: 176/442 cut-off events. [2024-10-13 16:41:38,437 INFO L125 PetriNetUnfolderBase]: For 493/505 co-relation queries the response was YES. [2024-10-13 16:41:38,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 442 events. 176/442 cut-off events. For 493/505 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1724 event pairs, 36 based on Foata normal form. 9/451 useless extension candidates. Maximal degree in co-relation 1169. Up to 217 conditions per place. [2024-10-13 16:41:38,440 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 49 selfloop transitions, 11 changer transitions 7/76 dead transitions. [2024-10-13 16:41:38,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 457 flow [2024-10-13 16:41:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 16:41:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 16:41:38,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-10-13 16:41:38,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-10-13 16:41:38,441 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 176 flow. Second operand 8 states and 154 transitions. [2024-10-13 16:41:38,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 457 flow [2024-10-13 16:41:38,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:41:38,447 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 249 flow [2024-10-13 16:41:38,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=249, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-10-13 16:41:38,450 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-10-13 16:41:38,450 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 249 flow [2024-10-13 16:41:38,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:38,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:38,452 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:41:38,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:41:38,452 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:38,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:38,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1753422616, now seen corresponding path program 1 times [2024-10-13 16:41:38,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:38,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769759241] [2024-10-13 16:41:38,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:38,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:38,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:38,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769759241] [2024-10-13 16:41:38,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769759241] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:41:38,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764531905] [2024-10-13 16:41:38,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:38,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:41:38,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:41:38,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:41:38,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:41:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:38,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:41:38,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:41:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:38,722 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:41:38,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764531905] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:41:38,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:41:38,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:41:38,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444574516] [2024-10-13 16:41:38,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:41:38,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:41:38,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:38,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:41:38,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:41:38,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-10-13 16:41:38,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:38,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:38,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-10-13 16:41:38,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:38,977 INFO L124 PetriNetUnfolderBase]: 210/557 cut-off events. [2024-10-13 16:41:38,978 INFO L125 PetriNetUnfolderBase]: For 912/919 co-relation queries the response was YES. [2024-10-13 16:41:38,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 557 events. 210/557 cut-off events. For 912/919 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2319 event pairs, 49 based on Foata normal form. 15/572 useless extension candidates. Maximal degree in co-relation 1546. Up to 180 conditions per place. [2024-10-13 16:41:38,984 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 63 selfloop transitions, 21 changer transitions 3/97 dead transitions. [2024-10-13 16:41:38,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 663 flow [2024-10-13 16:41:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:41:38,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:41:38,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2024-10-13 16:41:38,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-10-13 16:41:38,986 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 249 flow. Second operand 10 states and 210 transitions. [2024-10-13 16:41:38,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 663 flow [2024-10-13 16:41:38,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 97 transitions, 649 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-13 16:41:38,995 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 424 flow [2024-10-13 16:41:38,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=424, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-10-13 16:41:38,996 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-10-13 16:41:38,997 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 424 flow [2024-10-13 16:41:38,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:38,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:38,998 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:41:39,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:41:39,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 16:41:39,199 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:39,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1478474113, now seen corresponding path program 1 times [2024-10-13 16:41:39,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:39,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739082054] [2024-10-13 16:41:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:39,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 16:41:39,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:39,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739082054] [2024-10-13 16:41:39,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739082054] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:41:39,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:41:39,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:41:39,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376877511] [2024-10-13 16:41:39,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:41:39,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:41:39,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:39,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:41:39,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:41:39,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-10-13 16:41:39,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:39,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:39,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-10-13 16:41:39,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:39,340 INFO L124 PetriNetUnfolderBase]: 205/546 cut-off events. [2024-10-13 16:41:39,340 INFO L125 PetriNetUnfolderBase]: For 1801/1810 co-relation queries the response was YES. [2024-10-13 16:41:39,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 546 events. 205/546 cut-off events. For 1801/1810 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2213 event pairs, 82 based on Foata normal form. 16/558 useless extension candidates. Maximal degree in co-relation 1749. Up to 310 conditions per place. [2024-10-13 16:41:39,344 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 45 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-10-13 16:41:39,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 68 transitions, 609 flow [2024-10-13 16:41:39,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:41:39,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:41:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-10-13 16:41:39,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-13 16:41:39,346 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 424 flow. Second operand 3 states and 76 transitions. [2024-10-13 16:41:39,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 68 transitions, 609 flow [2024-10-13 16:41:39,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 584 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-13 16:41:39,353 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 430 flow [2024-10-13 16:41:39,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-10-13 16:41:39,354 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-10-13 16:41:39,354 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 430 flow [2024-10-13 16:41:39,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:39,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:39,355 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:41:39,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:41:39,355 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:39,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:39,356 INFO L85 PathProgramCache]: Analyzing trace with hash 333015127, now seen corresponding path program 1 times [2024-10-13 16:41:39,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:39,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890358003] [2024-10-13 16:41:39,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:39,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:39,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:39,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890358003] [2024-10-13 16:41:39,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890358003] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:41:39,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559033150] [2024-10-13 16:41:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:39,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:41:39,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:41:39,456 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:41:39,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:41:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:39,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:41:39,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:41:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:39,585 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:41:39,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559033150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:41:39,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:41:39,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-13 16:41:39,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639475749] [2024-10-13 16:41:39,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:41:39,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:41:39,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:39,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:41:39,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:41:39,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-10-13 16:41:39,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:39,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:39,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-10-13 16:41:39,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:39,804 INFO L124 PetriNetUnfolderBase]: 221/556 cut-off events. [2024-10-13 16:41:39,805 INFO L125 PetriNetUnfolderBase]: For 2070/2070 co-relation queries the response was YES. [2024-10-13 16:41:39,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 556 events. 221/556 cut-off events. For 2070/2070 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2219 event pairs, 17 based on Foata normal form. 18/556 useless extension candidates. Maximal degree in co-relation 1877. Up to 237 conditions per place. [2024-10-13 16:41:39,812 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 68 selfloop transitions, 12 changer transitions 5/97 dead transitions. [2024-10-13 16:41:39,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 878 flow [2024-10-13 16:41:39,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:41:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:41:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-10-13 16:41:39,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6535087719298246 [2024-10-13 16:41:39,815 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 430 flow. Second operand 6 states and 149 transitions. [2024-10-13 16:41:39,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 878 flow [2024-10-13 16:41:39,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 97 transitions, 864 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-13 16:41:39,823 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 436 flow [2024-10-13 16:41:39,824 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=436, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-10-13 16:41:39,825 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2024-10-13 16:41:39,826 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 436 flow [2024-10-13 16:41:39,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:39,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:39,827 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:41:39,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:41:40,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-13 16:41:40,028 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:40,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:40,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1733534688, now seen corresponding path program 1 times [2024-10-13 16:41:40,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:40,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011959164] [2024-10-13 16:41:40,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:40,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:40,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:40,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011959164] [2024-10-13 16:41:40,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011959164] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:41:40,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81809927] [2024-10-13 16:41:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:40,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:41:40,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:41:40,109 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:41:40,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:41:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:40,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:41:40,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:41:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:40,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:41:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:40,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81809927] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:41:40,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:41:40,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-13 16:41:40,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349161924] [2024-10-13 16:41:40,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:41:40,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:41:40,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:40,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:41:40,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:41:40,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-10-13 16:41:40,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 436 flow. Second operand has 12 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:40,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:40,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-10-13 16:41:40,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:40,636 INFO L124 PetriNetUnfolderBase]: 476/1163 cut-off events. [2024-10-13 16:41:40,636 INFO L125 PetriNetUnfolderBase]: For 4991/4991 co-relation queries the response was YES. [2024-10-13 16:41:40,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4207 conditions, 1163 events. 476/1163 cut-off events. For 4991/4991 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5727 event pairs, 47 based on Foata normal form. 45/1208 useless extension candidates. Maximal degree in co-relation 4175. Up to 374 conditions per place. [2024-10-13 16:41:40,661 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 131 selfloop transitions, 21 changer transitions 22/186 dead transitions. [2024-10-13 16:41:40,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 186 transitions, 1773 flow [2024-10-13 16:41:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:41:40,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:41:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-10-13 16:41:40,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7026315789473684 [2024-10-13 16:41:40,666 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 436 flow. Second operand 10 states and 267 transitions. [2024-10-13 16:41:40,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 186 transitions, 1773 flow [2024-10-13 16:41:40,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 186 transitions, 1748 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-13 16:41:40,679 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 678 flow [2024-10-13 16:41:40,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=678, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2024-10-13 16:41:40,680 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2024-10-13 16:41:40,680 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 678 flow [2024-10-13 16:41:40,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:40,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:40,681 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:41:40,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 16:41:40,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:41:40,882 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:40,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:40,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2043242043, now seen corresponding path program 1 times [2024-10-13 16:41:40,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:40,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787676206] [2024-10-13 16:41:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:40,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:40,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:40,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787676206] [2024-10-13 16:41:40,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787676206] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:41:40,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:41:40,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:41:40,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976046313] [2024-10-13 16:41:40,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:41:40,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:41:40,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:40,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:41:40,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:41:40,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-13 16:41:40,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 678 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:40,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:40,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-13 16:41:40,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:41,235 INFO L124 PetriNetUnfolderBase]: 560/1342 cut-off events. [2024-10-13 16:41:41,235 INFO L125 PetriNetUnfolderBase]: For 8717/8724 co-relation queries the response was YES. [2024-10-13 16:41:41,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5332 conditions, 1342 events. 560/1342 cut-off events. For 8717/8724 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6867 event pairs, 51 based on Foata normal form. 36/1373 useless extension candidates. Maximal degree in co-relation 5295. Up to 461 conditions per place. [2024-10-13 16:41:41,247 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 74 selfloop transitions, 50 changer transitions 0/132 dead transitions. [2024-10-13 16:41:41,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 132 transitions, 1522 flow [2024-10-13 16:41:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 16:41:41,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 16:41:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-10-13 16:41:41,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-10-13 16:41:41,249 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 678 flow. Second operand 8 states and 146 transitions. [2024-10-13 16:41:41,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 132 transitions, 1522 flow [2024-10-13 16:41:41,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 132 transitions, 1494 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-13 16:41:41,263 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 1143 flow [2024-10-13 16:41:41,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1143, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2024-10-13 16:41:41,264 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 55 predicate places. [2024-10-13 16:41:41,264 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 1143 flow [2024-10-13 16:41:41,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:41,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:41,265 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:41:41,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:41:41,265 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:41,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:41,266 INFO L85 PathProgramCache]: Analyzing trace with hash 782469495, now seen corresponding path program 1 times [2024-10-13 16:41:41,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:41,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681614684] [2024-10-13 16:41:41,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:41,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:41,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:41,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681614684] [2024-10-13 16:41:41,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681614684] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:41:41,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785170693] [2024-10-13 16:41:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:41,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:41:41,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:41:41,379 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:41:41,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:41:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:41,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:41:41,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:41:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:41,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:41:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:41,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785170693] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:41:41,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:41:41,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-13 16:41:41,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523662466] [2024-10-13 16:41:41,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:41:41,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:41:41,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:41:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:41:41,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-13 16:41:41,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 1143 flow. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:41,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:41,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-13 16:41:41,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:42,153 INFO L124 PetriNetUnfolderBase]: 667/1657 cut-off events. [2024-10-13 16:41:42,154 INFO L125 PetriNetUnfolderBase]: For 15803/15810 co-relation queries the response was YES. [2024-10-13 16:41:42,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1657 events. 667/1657 cut-off events. For 15803/15810 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8217 event pairs, 78 based on Foata normal form. 68/1720 useless extension candidates. Maximal degree in co-relation 7213. Up to 430 conditions per place. [2024-10-13 16:41:42,170 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 104 selfloop transitions, 87 changer transitions 31/230 dead transitions. [2024-10-13 16:41:42,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 230 transitions, 3012 flow [2024-10-13 16:41:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 16:41:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 16:41:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 352 transitions. [2024-10-13 16:41:42,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44110275689223055 [2024-10-13 16:41:42,173 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 1143 flow. Second operand 21 states and 352 transitions. [2024-10-13 16:41:42,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 230 transitions, 3012 flow [2024-10-13 16:41:42,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 230 transitions, 2813 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-10-13 16:41:42,200 INFO L231 Difference]: Finished difference. Result has 110 places, 126 transitions, 1855 flow [2024-10-13 16:41:42,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1855, PETRI_PLACES=110, PETRI_TRANSITIONS=126} [2024-10-13 16:41:42,201 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 74 predicate places. [2024-10-13 16:41:42,201 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 126 transitions, 1855 flow [2024-10-13 16:41:42,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:42,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:42,201 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2024-10-13 16:41:42,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 16:41:42,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:41:42,402 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:42,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash -791151918, now seen corresponding path program 1 times [2024-10-13 16:41:42,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:42,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418768958] [2024-10-13 16:41:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:42,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 16:41:42,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:42,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418768958] [2024-10-13 16:41:42,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418768958] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:41:42,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876427475] [2024-10-13 16:41:42,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:42,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:41:42,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:41:42,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:41:42,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:41:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:42,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 16:41:42,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:41:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 16:41:42,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:41:42,882 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 16:41:42,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876427475] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:41:42,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:41:42,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-13 16:41:42,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748137022] [2024-10-13 16:41:42,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:41:42,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 16:41:42,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:42,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 16:41:42,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-13 16:41:42,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-10-13 16:41:42,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 126 transitions, 1855 flow. Second operand has 18 states, 18 states have (on average 16.72222222222222) internal successors, (301), 18 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:42,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:42,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-10-13 16:41:42,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:43,542 INFO L124 PetriNetUnfolderBase]: 660/1764 cut-off events. [2024-10-13 16:41:43,542 INFO L125 PetriNetUnfolderBase]: For 17688/17695 co-relation queries the response was YES. [2024-10-13 16:41:43,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8242 conditions, 1764 events. 660/1764 cut-off events. For 17688/17695 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9282 event pairs, 230 based on Foata normal form. 8/1771 useless extension candidates. Maximal degree in co-relation 8196. Up to 931 conditions per place. [2024-10-13 16:41:43,558 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 205 selfloop transitions, 75 changer transitions 10/298 dead transitions. [2024-10-13 16:41:43,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 298 transitions, 3923 flow [2024-10-13 16:41:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-13 16:41:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-10-13 16:41:43,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 601 transitions. [2024-10-13 16:41:43,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5101867572156197 [2024-10-13 16:41:43,561 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 1855 flow. Second operand 31 states and 601 transitions. [2024-10-13 16:41:43,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 298 transitions, 3923 flow [2024-10-13 16:41:43,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 298 transitions, 3594 flow, removed 96 selfloop flow, removed 8 redundant places. [2024-10-13 16:41:43,596 INFO L231 Difference]: Finished difference. Result has 142 places, 165 transitions, 2452 flow [2024-10-13 16:41:43,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2452, PETRI_PLACES=142, PETRI_TRANSITIONS=165} [2024-10-13 16:41:43,597 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 106 predicate places. [2024-10-13 16:41:43,597 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 165 transitions, 2452 flow [2024-10-13 16:41:43,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.72222222222222) internal successors, (301), 18 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:43,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:43,597 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-10-13 16:41:43,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 16:41:43,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 16:41:43,799 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:43,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:43,799 INFO L85 PathProgramCache]: Analyzing trace with hash 85625920, now seen corresponding path program 2 times [2024-10-13 16:41:43,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:43,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183088446] [2024-10-13 16:41:43,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:43,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:44,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183088446] [2024-10-13 16:41:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183088446] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:41:44,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052335707] [2024-10-13 16:41:44,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:41:44,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:41:44,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:41:44,033 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:41:44,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:41:44,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:41:44,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:41:44,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 16:41:44,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:41:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:44,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:41:44,395 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:41:44,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052335707] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:41:44,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:41:44,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-10-13 16:41:44,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804112992] [2024-10-13 16:41:44,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:41:44,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 16:41:44,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:44,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 16:41:44,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-10-13 16:41:44,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-10-13 16:41:44,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 165 transitions, 2452 flow. Second operand has 24 states, 24 states have (on average 18.416666666666668) internal successors, (442), 24 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:44,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:44,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-10-13 16:41:44,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:45,988 INFO L124 PetriNetUnfolderBase]: 1837/4646 cut-off events. [2024-10-13 16:41:45,989 INFO L125 PetriNetUnfolderBase]: For 46394/46394 co-relation queries the response was YES. [2024-10-13 16:41:46,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20986 conditions, 4646 events. 1837/4646 cut-off events. For 46394/46394 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 25462 event pairs, 101 based on Foata normal form. 215/4861 useless extension candidates. Maximal degree in co-relation 20930. Up to 661 conditions per place. [2024-10-13 16:41:46,036 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 531 selfloop transitions, 135 changer transitions 96/773 dead transitions. [2024-10-13 16:41:46,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 773 transitions, 11322 flow [2024-10-13 16:41:46,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 16:41:46,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 16:41:46,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 584 transitions. [2024-10-13 16:41:46,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6985645933014354 [2024-10-13 16:41:46,039 INFO L175 Difference]: Start difference. First operand has 142 places, 165 transitions, 2452 flow. Second operand 22 states and 584 transitions. [2024-10-13 16:41:46,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 773 transitions, 11322 flow [2024-10-13 16:41:46,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 773 transitions, 11077 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-10-13 16:41:46,143 INFO L231 Difference]: Finished difference. Result has 169 places, 239 transitions, 4022 flow [2024-10-13 16:41:46,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4022, PETRI_PLACES=169, PETRI_TRANSITIONS=239} [2024-10-13 16:41:46,144 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 133 predicate places. [2024-10-13 16:41:46,145 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 239 transitions, 4022 flow [2024-10-13 16:41:46,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.416666666666668) internal successors, (442), 24 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:46,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:46,145 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 7, 7, 7, 4, 1, 1, 1, 1] [2024-10-13 16:41:46,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 16:41:46,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:41:46,347 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:46,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:46,347 INFO L85 PathProgramCache]: Analyzing trace with hash 412335652, now seen corresponding path program 2 times [2024-10-13 16:41:46,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:46,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289069522] [2024-10-13 16:41:46,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:46,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:46,785 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 208 proven. 238 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 16:41:46,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:46,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289069522] [2024-10-13 16:41:46,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289069522] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:41:46,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559170184] [2024-10-13 16:41:46,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:41:46,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:41:46,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:41:46,788 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:41:46,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:41:46,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:41:46,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:41:46,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 16:41:46,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:41:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 40 proven. 394 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-13 16:41:47,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:41:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 40 proven. 394 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-13 16:41:47,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559170184] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:41:47,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:41:47,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-10-13 16:41:47,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409645800] [2024-10-13 16:41:47,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:41:47,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-13 16:41:47,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:47,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-13 16:41:47,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-10-13 16:41:47,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-10-13 16:41:47,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 239 transitions, 4022 flow. Second operand has 34 states, 34 states have (on average 16.676470588235293) internal successors, (567), 34 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:47,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:47,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-10-13 16:41:47,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:49,904 INFO L124 PetriNetUnfolderBase]: 1978/5172 cut-off events. [2024-10-13 16:41:49,904 INFO L125 PetriNetUnfolderBase]: For 61633/61634 co-relation queries the response was YES. [2024-10-13 16:41:49,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25135 conditions, 5172 events. 1978/5172 cut-off events. For 61633/61634 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 29682 event pairs, 834 based on Foata normal form. 16/5188 useless extension candidates. Maximal degree in co-relation 25069. Up to 2980 conditions per place. [2024-10-13 16:41:49,969 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 445 selfloop transitions, 151 changer transitions 26/630 dead transitions. [2024-10-13 16:41:49,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 630 transitions, 8937 flow [2024-10-13 16:41:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-10-13 16:41:49,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-10-13 16:41:49,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1291 transitions. [2024-10-13 16:41:49,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.507069913589945 [2024-10-13 16:41:49,974 INFO L175 Difference]: Start difference. First operand has 169 places, 239 transitions, 4022 flow. Second operand 67 states and 1291 transitions. [2024-10-13 16:41:49,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 630 transitions, 8937 flow [2024-10-13 16:41:50,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 630 transitions, 8538 flow, removed 139 selfloop flow, removed 9 redundant places. [2024-10-13 16:41:50,258 INFO L231 Difference]: Finished difference. Result has 244 places, 319 transitions, 5697 flow [2024-10-13 16:41:50,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3753, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=5697, PETRI_PLACES=244, PETRI_TRANSITIONS=319} [2024-10-13 16:41:50,259 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 208 predicate places. [2024-10-13 16:41:50,259 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 319 transitions, 5697 flow [2024-10-13 16:41:50,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 16.676470588235293) internal successors, (567), 34 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:50,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:50,260 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 8, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:41:50,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 16:41:50,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:41:50,464 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:50,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:50,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1698525685, now seen corresponding path program 1 times [2024-10-13 16:41:50,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:50,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623729420] [2024-10-13 16:41:50,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:50,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:50,696 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 208 proven. 37 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-10-13 16:41:50,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:50,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623729420] [2024-10-13 16:41:50,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623729420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:41:50,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666086020] [2024-10-13 16:41:50,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:50,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:41:50,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:41:50,699 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:41:50,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:41:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:50,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:41:50,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:41:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 208 proven. 32 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-10-13 16:41:50,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:41:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 208 proven. 32 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-10-13 16:41:51,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666086020] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:41:51,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:41:51,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-10-13 16:41:51,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715396569] [2024-10-13 16:41:51,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:41:51,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 16:41:51,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:51,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 16:41:51,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-10-13 16:41:51,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-13 16:41:51,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 319 transitions, 5697 flow. Second operand has 16 states, 16 states have (on average 15.125) internal successors, (242), 16 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:51,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:51,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-13 16:41:51,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:53,414 INFO L124 PetriNetUnfolderBase]: 3266/8681 cut-off events. [2024-10-13 16:41:53,414 INFO L125 PetriNetUnfolderBase]: For 107919/107936 co-relation queries the response was YES. [2024-10-13 16:41:53,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41469 conditions, 8681 events. 3266/8681 cut-off events. For 107919/107936 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 56884 event pairs, 611 based on Foata normal form. 132/8803 useless extension candidates. Maximal degree in co-relation 41382. Up to 2115 conditions per place. [2024-10-13 16:41:53,489 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 373 selfloop transitions, 331 changer transitions 18/730 dead transitions. [2024-10-13 16:41:53,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 730 transitions, 11847 flow [2024-10-13 16:41:53,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-13 16:41:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-13 16:41:53,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 614 transitions. [2024-10-13 16:41:53,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4366998577524893 [2024-10-13 16:41:53,492 INFO L175 Difference]: Start difference. First operand has 244 places, 319 transitions, 5697 flow. Second operand 37 states and 614 transitions. [2024-10-13 16:41:53,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 730 transitions, 11847 flow [2024-10-13 16:41:53,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 730 transitions, 11389 flow, removed 185 selfloop flow, removed 26 redundant places. [2024-10-13 16:41:53,931 INFO L231 Difference]: Finished difference. Result has 257 places, 503 transitions, 9272 flow [2024-10-13 16:41:53,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5045, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9272, PETRI_PLACES=257, PETRI_TRANSITIONS=503} [2024-10-13 16:41:53,933 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 221 predicate places. [2024-10-13 16:41:53,933 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 503 transitions, 9272 flow [2024-10-13 16:41:53,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.125) internal successors, (242), 16 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:53,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:41:53,934 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:41:53,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 16:41:54,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 16:41:54,135 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:41:54,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:41:54,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1520693804, now seen corresponding path program 2 times [2024-10-13 16:41:54,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:41:54,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95290863] [2024-10-13 16:41:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:41:54,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:41:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:41:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 232 proven. 73 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-10-13 16:41:54,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:41:54,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95290863] [2024-10-13 16:41:54,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95290863] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:41:54,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894212915] [2024-10-13 16:41:54,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:41:54,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:41:54,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:41:54,431 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:41:54,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 16:41:54,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:41:54,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:41:54,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 16:41:54,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:41:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 70 proven. 193 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-10-13 16:41:54,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:41:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 70 proven. 193 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-10-13 16:41:54,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894212915] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:41:54,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:41:54,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-10-13 16:41:54,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342876433] [2024-10-13 16:41:54,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:41:54,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 16:41:54,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:41:54,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 16:41:54,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2024-10-13 16:41:54,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-13 16:41:54,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 503 transitions, 9272 flow. Second operand has 24 states, 24 states have (on average 14.916666666666666) internal successors, (358), 24 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:41:54,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:41:54,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-13 16:41:54,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:41:59,443 INFO L124 PetriNetUnfolderBase]: 5416/14575 cut-off events. [2024-10-13 16:41:59,443 INFO L125 PetriNetUnfolderBase]: For 207982/208015 co-relation queries the response was YES. [2024-10-13 16:41:59,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73804 conditions, 14575 events. 5416/14575 cut-off events. For 207982/208015 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 110608 event pairs, 563 based on Foata normal form. 108/14683 useless extension candidates. Maximal degree in co-relation 73710. Up to 2053 conditions per place. [2024-10-13 16:41:59,567 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 306 selfloop transitions, 844 changer transitions 17/1175 dead transitions. [2024-10-13 16:41:59,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1175 transitions, 21155 flow [2024-10-13 16:41:59,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-13 16:41:59,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-10-13 16:41:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 901 transitions. [2024-10-13 16:41:59,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4159741458910434 [2024-10-13 16:41:59,571 INFO L175 Difference]: Start difference. First operand has 257 places, 503 transitions, 9272 flow. Second operand 57 states and 901 transitions. [2024-10-13 16:41:59,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1175 transitions, 21155 flow [2024-10-13 16:42:00,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 1175 transitions, 20756 flow, removed 114 selfloop flow, removed 8 redundant places. [2024-10-13 16:42:00,220 INFO L231 Difference]: Finished difference. Result has 309 places, 888 transitions, 18259 flow [2024-10-13 16:42:00,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8854, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=454, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=18259, PETRI_PLACES=309, PETRI_TRANSITIONS=888} [2024-10-13 16:42:00,221 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 273 predicate places. [2024-10-13 16:42:00,221 INFO L471 AbstractCegarLoop]: Abstraction has has 309 places, 888 transitions, 18259 flow [2024-10-13 16:42:00,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.916666666666666) internal successors, (358), 24 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:00,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:00,221 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:42:00,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 16:42:00,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 16:42:00,422 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:42:00,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:00,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1551694118, now seen corresponding path program 3 times [2024-10-13 16:42:00,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:00,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737382160] [2024-10-13 16:42:00,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:00,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 232 proven. 169 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-13 16:42:00,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:00,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737382160] [2024-10-13 16:42:00,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737382160] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:42:00,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791211932] [2024-10-13 16:42:00,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:42:00,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:42:00,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:42:00,926 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:42:00,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 16:42:01,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-10-13 16:42:01,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:42:01,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 16:42:01,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:42:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 40 proven. 340 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-13 16:42:01,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:42:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 40 proven. 340 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-13 16:42:01,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791211932] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:42:01,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:42:01,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 27 [2024-10-13 16:42:01,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942733995] [2024-10-13 16:42:01,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:42:01,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-13 16:42:01,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:01,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-13 16:42:01,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2024-10-13 16:42:01,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-13 16:42:01,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 888 transitions, 18259 flow. Second operand has 28 states, 28 states have (on average 14.928571428571429) internal successors, (418), 28 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:01,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:01,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-13 16:42:01,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:08,239 INFO L124 PetriNetUnfolderBase]: 6695/17972 cut-off events. [2024-10-13 16:42:08,240 INFO L125 PetriNetUnfolderBase]: For 296428/296468 co-relation queries the response was YES. [2024-10-13 16:42:08,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95995 conditions, 17972 events. 6695/17972 cut-off events. For 296428/296468 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 144817 event pairs, 784 based on Foata normal form. 81/18043 useless extension candidates. Maximal degree in co-relation 95898. Up to 2544 conditions per place. [2024-10-13 16:42:08,480 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 594 selfloop transitions, 953 changer transitions 17/1572 dead transitions. [2024-10-13 16:42:08,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 1572 transitions, 29711 flow [2024-10-13 16:42:08,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-10-13 16:42:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-10-13 16:42:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 1246 transitions. [2024-10-13 16:42:08,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4314404432132964 [2024-10-13 16:42:08,485 INFO L175 Difference]: Start difference. First operand has 309 places, 888 transitions, 18259 flow. Second operand 76 states and 1246 transitions. [2024-10-13 16:42:08,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 1572 transitions, 29711 flow [2024-10-13 16:42:09,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 1572 transitions, 29305 flow, removed 159 selfloop flow, removed 18 redundant places. [2024-10-13 16:42:09,854 INFO L231 Difference]: Finished difference. Result has 380 places, 1122 transitions, 25583 flow [2024-10-13 16:42:09,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17952, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=754, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=25583, PETRI_PLACES=380, PETRI_TRANSITIONS=1122} [2024-10-13 16:42:09,856 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 344 predicate places. [2024-10-13 16:42:09,856 INFO L471 AbstractCegarLoop]: Abstraction has has 380 places, 1122 transitions, 25583 flow [2024-10-13 16:42:09,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.928571428571429) internal successors, (418), 28 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:09,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:09,857 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1] [2024-10-13 16:42:09,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-13 16:42:10,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 16:42:10,058 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:42:10,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:10,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1467852032, now seen corresponding path program 3 times [2024-10-13 16:42:10,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:10,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298671836] [2024-10-13 16:42:10,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:10,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:10,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:10,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298671836] [2024-10-13 16:42:10,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298671836] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:42:10,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755992748] [2024-10-13 16:42:10,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:42:10,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:42:10,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:42:10,583 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:42:10,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 16:42:10,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-13 16:42:10,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:42:10,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-13 16:42:10,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:42:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:10,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:42:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:11,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755992748] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:42:11,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:42:11,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-10-13 16:42:11,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979971180] [2024-10-13 16:42:11,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:42:11,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-13 16:42:11,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:11,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-13 16:42:11,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-10-13 16:42:11,454 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-10-13 16:42:11,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 1122 transitions, 25583 flow. Second operand has 48 states, 48 states have (on average 18.458333333333332) internal successors, (886), 48 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:11,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:11,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-10-13 16:42:11,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:33,977 INFO L124 PetriNetUnfolderBase]: 18287/47538 cut-off events. [2024-10-13 16:42:33,977 INFO L125 PetriNetUnfolderBase]: For 1068803/1068803 co-relation queries the response was YES. [2024-10-13 16:42:34,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275617 conditions, 47538 events. 18287/47538 cut-off events. For 1068803/1068803 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 383078 event pairs, 477 based on Foata normal form. 2147/49685 useless extension candidates. Maximal degree in co-relation 275511. Up to 6907 conditions per place. [2024-10-13 16:42:34,746 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 4711 selfloop transitions, 1946 changer transitions 948/7615 dead transitions. [2024-10-13 16:42:34,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 7615 transitions, 172143 flow [2024-10-13 16:42:34,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-13 16:42:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-13 16:42:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1226 transitions. [2024-10-13 16:42:34,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7013729977116705 [2024-10-13 16:42:34,749 INFO L175 Difference]: Start difference. First operand has 380 places, 1122 transitions, 25583 flow. Second operand 46 states and 1226 transitions. [2024-10-13 16:42:34,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 7615 transitions, 172143 flow [2024-10-13 16:42:39,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 7615 transitions, 168081 flow, removed 1402 selfloop flow, removed 20 redundant places. [2024-10-13 16:42:39,910 INFO L231 Difference]: Finished difference. Result has 429 places, 2374 transitions, 61817 flow [2024-10-13 16:42:39,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=25151, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=791, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=61817, PETRI_PLACES=429, PETRI_TRANSITIONS=2374} [2024-10-13 16:42:39,912 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 393 predicate places. [2024-10-13 16:42:39,912 INFO L471 AbstractCegarLoop]: Abstraction has has 429 places, 2374 transitions, 61817 flow [2024-10-13 16:42:39,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 18.458333333333332) internal successors, (886), 48 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:39,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:39,913 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 23, 23, 23, 23, 23, 22, 15, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:42:39,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-13 16:42:40,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 16:42:40,114 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-13 16:42:40,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:40,114 INFO L85 PathProgramCache]: Analyzing trace with hash 428391110, now seen corresponding path program 4 times [2024-10-13 16:42:40,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:40,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014024177] [2024-10-13 16:42:40,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:40,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 984 proven. 303 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-10-13 16:42:40,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:40,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014024177] [2024-10-13 16:42:40,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014024177] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:42:40,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199156811] [2024-10-13 16:42:40,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 16:42:40,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:42:40,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:42:40,740 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:42:40,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 16:42:40,939 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 16:42:40,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:42:40,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 16:42:40,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:42:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 984 proven. 303 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-10-13 16:42:41,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:42:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 984 proven. 303 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-10-13 16:42:41,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199156811] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:42:41,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:42:41,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 35 [2024-10-13 16:42:41,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152682866] [2024-10-13 16:42:41,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:42:41,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-13 16:42:41,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-13 16:42:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2024-10-13 16:42:41,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-13 16:42:41,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 2374 transitions, 61817 flow. Second operand has 36 states, 36 states have (on average 14.777777777777779) internal successors, (532), 36 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:41,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:41,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-13 16:42:41,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand