./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/06-symbeq_08-tricky_address3.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/06-symbeq_08-tricky_address3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:40:23,668 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:40:23,725 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:40:23,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:40:23,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:40:23,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:40:23,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:40:23,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:40:23,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:40:23,752 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:40:23,753 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:40:23,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:40:23,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:40:23,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:40:23,754 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:40:23,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:40:23,754 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:40:23,755 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:40:23,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:40:23,755 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:40:23,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:40:23,758 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:40:23,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:40:23,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:40:23,759 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:40:23,759 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:40:23,759 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:40:23,759 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:40:23,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:40:23,760 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:40:23,760 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:40:23,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:40:23,760 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:40:23,760 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:40:23,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:40:23,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:40:23,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:40:23,761 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:40:23,761 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:40:23,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:40:23,761 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:40:23,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:40:23,763 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:40:23,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:40:23,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb [2024-10-13 16:40:23,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:40:23,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:40:23,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:40:23,989 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:40:23,989 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:40:23,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2024-10-13 16:40:25,167 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:40:25,358 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:40:25,359 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2024-10-13 16:40:25,373 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36bbb0795/415b7ae643334a1c86059514208be048/FLAGe7b01a6de [2024-10-13 16:40:25,383 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36bbb0795/415b7ae643334a1c86059514208be048 [2024-10-13 16:40:25,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:40:25,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:40:25,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:40:25,387 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:40:25,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:40:25,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:40:25" (1/1) ... [2024-10-13 16:40:25,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70cc1c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25, skipping insertion in model container [2024-10-13 16:40:25,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:40:25" (1/1) ... [2024-10-13 16:40:25,429 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:40:25,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:40:25,746 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:40:25,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:40:25,844 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:40:25,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25 WrapperNode [2024-10-13 16:40:25,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:40:25,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:40:25,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:40:25,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:40:25,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25" (1/1) ... [2024-10-13 16:40:25,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25" (1/1) ... [2024-10-13 16:40:25,887 INFO L138 Inliner]: procedures = 264, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2024-10-13 16:40:25,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:40:25,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:40:25,888 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:40:25,888 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:40:25,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25" (1/1) ... [2024-10-13 16:40:25,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25" (1/1) ... [2024-10-13 16:40:25,901 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25" (1/1) ... [2024-10-13 16:40:25,910 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2024-10-13 16:40:25,911 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25" (1/1) ... [2024-10-13 16:40:25,911 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25" (1/1) ... [2024-10-13 16:40:25,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25" (1/1) ... [2024-10-13 16:40:25,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25" (1/1) ... [2024-10-13 16:40:25,920 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25" (1/1) ... [2024-10-13 16:40:25,921 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25" (1/1) ... [2024-10-13 16:40:25,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:40:25,923 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:40:25,923 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:40:25,923 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:40:25,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25" (1/1) ... [2024-10-13 16:40:25,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:40:25,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:25,951 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 16:40:25,957 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 16:40:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:40:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:40:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:40:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:40:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:40:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 16:40:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 16:40:25,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:40:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:40:25,998 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 16:40:26,109 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:40:26,113 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:40:26,241 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:40:26,241 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:40:26,351 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:40:26,351 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 16:40:26,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:26 BoogieIcfgContainer [2024-10-13 16:40:26,351 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:40:26,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:40:26,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:40:26,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:40:26,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:40:25" (1/3) ... [2024-10-13 16:40:26,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506ebbe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:40:26, skipping insertion in model container [2024-10-13 16:40:26,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:25" (2/3) ... [2024-10-13 16:40:26,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506ebbe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:40:26, skipping insertion in model container [2024-10-13 16:40:26,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:26" (3/3) ... [2024-10-13 16:40:26,362 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2024-10-13 16:40:26,374 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:40:26,375 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-13 16:40:26,375 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:40:26,410 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 16:40:26,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 66 flow [2024-10-13 16:40:26,459 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2024-10-13 16:40:26,459 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:40:26,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 1/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2024-10-13 16:40:26,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 31 transitions, 66 flow [2024-10-13 16:40:26,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 30 transitions, 63 flow [2024-10-13 16:40:26,472 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:40:26,477 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;@5322cff4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:40:26,477 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-13 16:40:26,479 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:40:26,480 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:40:26,480 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:40:26,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:26,480 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:40:26,481 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:26,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:26,485 INFO L85 PathProgramCache]: Analyzing trace with hash 235769, now seen corresponding path program 1 times [2024-10-13 16:40:26,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:26,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572757172] [2024-10-13 16:40:26,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:26,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:26,658 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 16:40:26,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:26,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572757172] [2024-10-13 16:40:26,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572757172] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:26,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:26,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:26,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197128366] [2024-10-13 16:40:26,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:26,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:26,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:26,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:26,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:26,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-10-13 16:40:26,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:26,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:26,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-10-13 16:40:26,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:26,811 INFO L124 PetriNetUnfolderBase]: 43/143 cut-off events. [2024-10-13 16:40:26,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:40:26,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 143 events. 43/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 545 event pairs, 42 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 233. Up to 100 conditions per place. [2024-10-13 16:40:26,815 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 15 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2024-10-13 16:40:26,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 99 flow [2024-10-13 16:40:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:40:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:40:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-10-13 16:40:26,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-10-13 16:40:26,828 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 63 flow. Second operand 4 states and 64 transitions. [2024-10-13 16:40:26,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 99 flow [2024-10-13 16:40:26,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:40:26,833 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 68 flow [2024-10-13 16:40:26,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-10-13 16:40:26,838 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2024-10-13 16:40:26,839 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 68 flow [2024-10-13 16:40:26,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:26,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:26,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-13 16:40:26,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:40:26,841 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:26,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:26,842 INFO L85 PathProgramCache]: Analyzing trace with hash 7309083, now seen corresponding path program 1 times [2024-10-13 16:40:26,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:26,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060058355] [2024-10-13 16:40:26,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:26,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:26,925 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 16:40:26,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:26,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060058355] [2024-10-13 16:40:26,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060058355] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:26,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:26,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:26,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563287307] [2024-10-13 16:40:26,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:26,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:26,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:26,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:26,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:26,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-10-13 16:40:26,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:26,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:26,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-10-13 16:40:26,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:27,033 INFO L124 PetriNetUnfolderBase]: 43/146 cut-off events. [2024-10-13 16:40:27,033 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:40:27,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 146 events. 43/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 551 event pairs, 42 based on Foata normal form. 1/131 useless extension candidates. Maximal degree in co-relation 237. Up to 104 conditions per place. [2024-10-13 16:40:27,036 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 18 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-10-13 16:40:27,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 118 flow [2024-10-13 16:40:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:40:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:40:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-10-13 16:40:27,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-10-13 16:40:27,037 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 68 flow. Second operand 4 states and 67 transitions. [2024-10-13 16:40:27,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 118 flow [2024-10-13 16:40:27,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:40:27,055 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 82 flow [2024-10-13 16:40:27,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-10-13 16:40:27,059 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2024-10-13 16:40:27,059 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 82 flow [2024-10-13 16:40:27,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:27,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:27,059 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:40:27,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:40:27,059 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:27,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:27,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1298221618, now seen corresponding path program 1 times [2024-10-13 16:40:27,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:27,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46451921] [2024-10-13 16:40:27,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:27,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:40:27,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:27,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46451921] [2024-10-13 16:40:27,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46451921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:27,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:27,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:27,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186876180] [2024-10-13 16:40:27,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:27,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:40:27,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:27,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:40:27,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:40:27,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-10-13 16:40:27,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:27,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:27,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-10-13 16:40:27,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:27,158 INFO L124 PetriNetUnfolderBase]: 43/145 cut-off events. [2024-10-13 16:40:27,158 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:40:27,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 145 events. 43/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 550 event pairs, 42 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 247. Up to 103 conditions per place. [2024-10-13 16:40:27,160 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 16 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-10-13 16:40:27,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 118 flow [2024-10-13 16:40:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:40:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:40:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-10-13 16:40:27,161 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2024-10-13 16:40:27,161 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 82 flow. Second operand 3 states and 52 transitions. [2024-10-13 16:40:27,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 118 flow [2024-10-13 16:40:27,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:40:27,163 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 84 flow [2024-10-13 16:40:27,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-10-13 16:40:27,163 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2024-10-13 16:40:27,164 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 84 flow [2024-10-13 16:40:27,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:27,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:27,164 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:27,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:40:27,164 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:27,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:27,164 INFO L85 PathProgramCache]: Analyzing trace with hash 918469682, now seen corresponding path program 1 times [2024-10-13 16:40:27,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:27,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176529823] [2024-10-13 16:40:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:27,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:27,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:27,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176529823] [2024-10-13 16:40:27,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176529823] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:40:27,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692674772] [2024-10-13 16:40:27,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:27,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:27,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:27,274 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 16:40:27,275 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 16:40:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:27,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:40:27,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:40:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:27,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:40:27,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:27,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692674772] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:40:27,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:40:27,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-13 16:40:27,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595086098] [2024-10-13 16:40:27,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:40:27,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 16:40:27,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:27,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 16:40:27,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:40:27,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-10-13 16:40:27,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 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 16:40:27,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:27,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-10-13 16:40:27,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:27,501 INFO L124 PetriNetUnfolderBase]: 43/149 cut-off events. [2024-10-13 16:40:27,504 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-13 16:40:27,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 149 events. 43/149 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 547 event pairs, 42 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 244. Up to 101 conditions per place. [2024-10-13 16:40:27,506 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 16 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2024-10-13 16:40:27,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 148 flow [2024-10-13 16:40:27,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:40:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:40:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-10-13 16:40:27,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4700460829493088 [2024-10-13 16:40:27,508 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 84 flow. Second operand 7 states and 102 transitions. [2024-10-13 16:40:27,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 148 flow [2024-10-13 16:40:27,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:40:27,510 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 113 flow [2024-10-13 16:40:27,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-10-13 16:40:27,510 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-10-13 16:40:27,510 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 113 flow [2024-10-13 16:40:27,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 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 16:40:27,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:27,511 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:27,525 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 16:40:27,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:27,712 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:27,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:27,712 INFO L85 PathProgramCache]: Analyzing trace with hash -106069166, now seen corresponding path program 2 times [2024-10-13 16:40:27,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:27,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373011627] [2024-10-13 16:40:27,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:27,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:27,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:27,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373011627] [2024-10-13 16:40:27,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373011627] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:40:27,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671230155] [2024-10-13 16:40:27,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:40:27,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:27,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:27,828 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 16:40:27,829 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 16:40:27,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:40:27,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:40:27,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:40:27,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:40:27,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-13 16:40:27,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2024-10-13 16:40:27,958 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:40:27,958 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:40:27,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671230155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:27,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:40:27,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 10 [2024-10-13 16:40:27,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195222063] [2024-10-13 16:40:27,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:27,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:27,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:27,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:27,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:40:27,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-10-13 16:40:27,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:27,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:27,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-10-13 16:40:27,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:28,050 INFO L124 PetriNetUnfolderBase]: 57/164 cut-off events. [2024-10-13 16:40:28,051 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-13 16:40:28,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 164 events. 57/164 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 561 event pairs, 18 based on Foata normal form. 8/155 useless extension candidates. Maximal degree in co-relation 289. Up to 74 conditions per place. [2024-10-13 16:40:28,053 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 35 selfloop transitions, 6 changer transitions 3/52 dead transitions. [2024-10-13 16:40:28,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 239 flow [2024-10-13 16:40:28,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:28,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-10-13 16:40:28,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6193548387096774 [2024-10-13 16:40:28,059 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 113 flow. Second operand 5 states and 96 transitions. [2024-10-13 16:40:28,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 239 flow [2024-10-13 16:40:28,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 225 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-13 16:40:28,061 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 137 flow [2024-10-13 16:40:28,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-10-13 16:40:28,061 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2024-10-13 16:40:28,062 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 137 flow [2024-10-13 16:40:28,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:28,062 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:28,062 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:28,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 16:40:28,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:28,263 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:28,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash -105681144, now seen corresponding path program 1 times [2024-10-13 16:40:28,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:28,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605705861] [2024-10-13 16:40:28,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:28,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:40:28,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:28,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605705861] [2024-10-13 16:40:28,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605705861] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:28,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:28,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:40:28,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579600383] [2024-10-13 16:40:28,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:28,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:28,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:28,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:28,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:28,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-10-13 16:40:28,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:28,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:28,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-10-13 16:40:28,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:28,394 INFO L124 PetriNetUnfolderBase]: 39/137 cut-off events. [2024-10-13 16:40:28,394 INFO L125 PetriNetUnfolderBase]: For 62/65 co-relation queries the response was YES. [2024-10-13 16:40:28,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 137 events. 39/137 cut-off events. For 62/65 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 479 event pairs, 8 based on Foata normal form. 7/133 useless extension candidates. Maximal degree in co-relation 282. Up to 62 conditions per place. [2024-10-13 16:40:28,395 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 35 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2024-10-13 16:40:28,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 251 flow [2024-10-13 16:40:28,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:40:28,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:40:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-10-13 16:40:28,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2024-10-13 16:40:28,397 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 137 flow. Second operand 4 states and 76 transitions. [2024-10-13 16:40:28,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 251 flow [2024-10-13 16:40:28,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 251 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:40:28,399 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 141 flow [2024-10-13 16:40:28,399 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2024-10-13 16:40:28,400 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2024-10-13 16:40:28,400 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 141 flow [2024-10-13 16:40:28,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:28,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:28,401 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:28,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:40:28,401 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:28,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:28,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1006823390, now seen corresponding path program 1 times [2024-10-13 16:40:28,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:28,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104899074] [2024-10-13 16:40:28,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:28,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:28,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:28,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104899074] [2024-10-13 16:40:28,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104899074] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:40:28,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109096200] [2024-10-13 16:40:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:28,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:28,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:28,482 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 16:40:28,483 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 16:40:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:28,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 16:40:28,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:40:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:28,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:40:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:28,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109096200] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:40:28,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:40:28,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-13 16:40:28,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036557856] [2024-10-13 16:40:28,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:40:28,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 16:40:28,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:28,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 16:40:28,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-13 16:40:28,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-10-13 16:40:28,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 141 flow. Second operand has 16 states, 16 states have (on average 12.25) internal successors, (196), 16 states have internal predecessors, (196), 0 states have call successors, (0), 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 16:40:28,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:28,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-10-13 16:40:28,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:28,799 INFO L124 PetriNetUnfolderBase]: 33/146 cut-off events. [2024-10-13 16:40:28,799 INFO L125 PetriNetUnfolderBase]: For 79/80 co-relation queries the response was YES. [2024-10-13 16:40:28,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 146 events. 33/146 cut-off events. For 79/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 486 event pairs, 32 based on Foata normal form. 4/144 useless extension candidates. Maximal degree in co-relation 321. Up to 85 conditions per place. [2024-10-13 16:40:28,800 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 18 selfloop transitions, 15 changer transitions 0/43 dead transitions. [2024-10-13 16:40:28,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 43 transitions, 255 flow [2024-10-13 16:40:28,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:40:28,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:40:28,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 200 transitions. [2024-10-13 16:40:28,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-10-13 16:40:28,802 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 141 flow. Second operand 15 states and 200 transitions. [2024-10-13 16:40:28,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 43 transitions, 255 flow [2024-10-13 16:40:28,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 43 transitions, 249 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:40:28,805 INFO L231 Difference]: Finished difference. Result has 64 places, 43 transitions, 232 flow [2024-10-13 16:40:28,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=232, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2024-10-13 16:40:28,805 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2024-10-13 16:40:28,805 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 232 flow [2024-10-13 16:40:28,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.25) internal successors, (196), 16 states have internal predecessors, (196), 0 states have call successors, (0), 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 16:40:28,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:28,806 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:28,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:40:29,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:29,011 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:29,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:29,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1969116770, now seen corresponding path program 2 times [2024-10-13 16:40:29,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:29,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032347186] [2024-10-13 16:40:29,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:29,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:29,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:29,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032347186] [2024-10-13 16:40:29,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032347186] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:40:29,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604785897] [2024-10-13 16:40:29,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:40:29,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:29,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:29,219 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 16:40:29,222 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 16:40:29,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:40:29,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:40:29,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:40:29,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:40:29,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-13 16:40:29,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2024-10-13 16:40:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:40:29,358 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:40:29,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604785897] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:29,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:40:29,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [16] total 18 [2024-10-13 16:40:29,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460510673] [2024-10-13 16:40:29,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:29,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:29,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:29,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:29,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-10-13 16:40:29,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-10-13 16:40:29,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:29,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:29,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-10-13 16:40:29,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:29,438 INFO L124 PetriNetUnfolderBase]: 37/139 cut-off events. [2024-10-13 16:40:29,438 INFO L125 PetriNetUnfolderBase]: For 110/112 co-relation queries the response was YES. [2024-10-13 16:40:29,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 139 events. 37/139 cut-off events. For 110/112 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 407 event pairs, 12 based on Foata normal form. 10/146 useless extension candidates. Maximal degree in co-relation 310. Up to 53 conditions per place. [2024-10-13 16:40:29,439 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 41 selfloop transitions, 5 changer transitions 1/54 dead transitions. [2024-10-13 16:40:29,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 54 transitions, 346 flow [2024-10-13 16:40:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:29,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-10-13 16:40:29,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5870967741935483 [2024-10-13 16:40:29,445 INFO L175 Difference]: Start difference. First operand has 64 places, 43 transitions, 232 flow. Second operand 5 states and 91 transitions. [2024-10-13 16:40:29,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 54 transitions, 346 flow [2024-10-13 16:40:29,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 54 transitions, 324 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-10-13 16:40:29,448 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 210 flow [2024-10-13 16:40:29,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2024-10-13 16:40:29,448 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2024-10-13 16:40:29,448 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 210 flow [2024-10-13 16:40:29,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:29,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:29,449 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:29,461 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 16:40:29,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:29,649 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:29,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:29,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1957088073, now seen corresponding path program 1 times [2024-10-13 16:40:29,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:29,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823095503] [2024-10-13 16:40:29,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:29,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:40:29,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:29,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823095503] [2024-10-13 16:40:29,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823095503] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:29,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:29,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:40:29,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895534450] [2024-10-13 16:40:29,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:29,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:29,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:29,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:29,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-10-13 16:40:29,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:29,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:29,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-10-13 16:40:29,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:29,759 INFO L124 PetriNetUnfolderBase]: 33/130 cut-off events. [2024-10-13 16:40:29,759 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-10-13 16:40:29,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 130 events. 33/130 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 363 event pairs, 14 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 312. Up to 58 conditions per place. [2024-10-13 16:40:29,760 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 41 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2024-10-13 16:40:29,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 52 transitions, 342 flow [2024-10-13 16:40:29,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:40:29,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:40:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-10-13 16:40:29,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6048387096774194 [2024-10-13 16:40:29,761 INFO L175 Difference]: Start difference. First operand has 63 places, 41 transitions, 210 flow. Second operand 4 states and 75 transitions. [2024-10-13 16:40:29,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 52 transitions, 342 flow [2024-10-13 16:40:29,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 52 transitions, 320 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-13 16:40:29,763 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 202 flow [2024-10-13 16:40:29,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2024-10-13 16:40:29,763 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2024-10-13 16:40:29,763 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 202 flow [2024-10-13 16:40:29,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:29,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:29,764 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:29,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:40:29,764 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:29,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash -540187862, now seen corresponding path program 1 times [2024-10-13 16:40:29,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:29,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780024210] [2024-10-13 16:40:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:29,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:40:29,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:29,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780024210] [2024-10-13 16:40:29,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780024210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:29,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:29,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:40:29,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062223898] [2024-10-13 16:40:29,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:29,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:40:29,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:40:29,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:40:29,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-10-13 16:40:29,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:29,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:29,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-10-13 16:40:29,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:29,990 INFO L124 PetriNetUnfolderBase]: 36/136 cut-off events. [2024-10-13 16:40:29,990 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-10-13 16:40:29,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 136 events. 36/136 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 381 event pairs, 8 based on Foata normal form. 14/150 useless extension candidates. Maximal degree in co-relation 273. Up to 57 conditions per place. [2024-10-13 16:40:29,991 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 40 selfloop transitions, 6 changer transitions 4/56 dead transitions. [2024-10-13 16:40:29,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 56 transitions, 352 flow [2024-10-13 16:40:29,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:40:29,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:40:29,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-10-13 16:40:29,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2024-10-13 16:40:29,993 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 202 flow. Second operand 6 states and 107 transitions. [2024-10-13 16:40:29,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 56 transitions, 352 flow [2024-10-13 16:40:29,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 340 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:40:29,995 INFO L231 Difference]: Finished difference. Result has 67 places, 43 transitions, 237 flow [2024-10-13 16:40:29,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=67, PETRI_TRANSITIONS=43} [2024-10-13 16:40:29,996 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2024-10-13 16:40:29,997 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 43 transitions, 237 flow [2024-10-13 16:40:29,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:29,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:29,998 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:29,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:40:29,998 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:29,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:29,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1441260989, now seen corresponding path program 1 times [2024-10-13 16:40:29,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:29,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076242057] [2024-10-13 16:40:29,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:29,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:30,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076242057] [2024-10-13 16:40:30,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076242057] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:40:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092223469] [2024-10-13 16:40:30,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:30,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:30,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:30,216 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 16:40:30,216 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 16:40:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:30,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 16:40:30,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:40:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:30,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:40:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:30,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092223469] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:40:30,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:40:30,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-10-13 16:40:30,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519797986] [2024-10-13 16:40:30,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:40:30,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-13 16:40:30,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:30,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-13 16:40:30,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-10-13 16:40:30,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-10-13 16:40:30,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 43 transitions, 237 flow. Second operand has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 21 states have internal predecessors, (262), 0 states have call successors, (0), 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 16:40:30,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:30,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-10-13 16:40:30,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:30,649 INFO L124 PetriNetUnfolderBase]: 32/135 cut-off events. [2024-10-13 16:40:30,649 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-10-13 16:40:30,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 135 events. 32/135 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 332 event pairs, 28 based on Foata normal form. 3/137 useless extension candidates. Maximal degree in co-relation 377. Up to 81 conditions per place. [2024-10-13 16:40:30,651 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 20 selfloop transitions, 21 changer transitions 0/49 dead transitions. [2024-10-13 16:40:30,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 49 transitions, 373 flow [2024-10-13 16:40:30,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 16:40:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 16:40:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 271 transitions. [2024-10-13 16:40:30,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4162826420890937 [2024-10-13 16:40:30,652 INFO L175 Difference]: Start difference. First operand has 67 places, 43 transitions, 237 flow. Second operand 21 states and 271 transitions. [2024-10-13 16:40:30,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 49 transitions, 373 flow [2024-10-13 16:40:30,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 49 transitions, 365 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 16:40:30,654 INFO L231 Difference]: Finished difference. Result has 87 places, 49 transitions, 340 flow [2024-10-13 16:40:30,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=340, PETRI_PLACES=87, PETRI_TRANSITIONS=49} [2024-10-13 16:40:30,654 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 54 predicate places. [2024-10-13 16:40:30,654 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 49 transitions, 340 flow [2024-10-13 16:40:30,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 21 states have internal predecessors, (262), 0 states have call successors, (0), 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 16:40:30,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:30,655 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:30,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:40:30,859 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,SelfDestructingSolverStorable10 [2024-10-13 16:40:30,860 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:30,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:30,860 INFO L85 PathProgramCache]: Analyzing trace with hash -361384590, now seen corresponding path program 2 times [2024-10-13 16:40:30,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:30,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865009979] [2024-10-13 16:40:30,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:30,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:40:31,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:31,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865009979] [2024-10-13 16:40:31,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865009979] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:31,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:31,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:40:31,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750820991] [2024-10-13 16:40:31,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:31,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:40:31,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:31,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:40:31,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:40:31,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-10-13 16:40:31,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 49 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:31,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:31,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-10-13 16:40:31,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:31,283 INFO L124 PetriNetUnfolderBase]: 49/181 cut-off events. [2024-10-13 16:40:31,283 INFO L125 PetriNetUnfolderBase]: For 187/189 co-relation queries the response was YES. [2024-10-13 16:40:31,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 181 events. 49/181 cut-off events. For 187/189 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 586 event pairs, 10 based on Foata normal form. 5/186 useless extension candidates. Maximal degree in co-relation 376. Up to 45 conditions per place. [2024-10-13 16:40:31,284 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 57 selfloop transitions, 10 changer transitions 2/73 dead transitions. [2024-10-13 16:40:31,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 73 transitions, 545 flow [2024-10-13 16:40:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:40:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:40:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-10-13 16:40:31,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45483870967741935 [2024-10-13 16:40:31,285 INFO L175 Difference]: Start difference. First operand has 87 places, 49 transitions, 340 flow. Second operand 10 states and 141 transitions. [2024-10-13 16:40:31,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 73 transitions, 545 flow [2024-10-13 16:40:31,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 73 transitions, 496 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-10-13 16:40:31,287 INFO L231 Difference]: Finished difference. Result has 88 places, 53 transitions, 355 flow [2024-10-13 16:40:31,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=355, PETRI_PLACES=88, PETRI_TRANSITIONS=53} [2024-10-13 16:40:31,288 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 55 predicate places. [2024-10-13 16:40:31,288 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 53 transitions, 355 flow [2024-10-13 16:40:31,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:31,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:31,288 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:31,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:40:31,289 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:31,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:31,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1447057436, now seen corresponding path program 3 times [2024-10-13 16:40:31,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:31,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456526780] [2024-10-13 16:40:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:31,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:40:31,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:31,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456526780] [2024-10-13 16:40:31,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456526780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:31,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:31,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:40:31,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216289063] [2024-10-13 16:40:31,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:31,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:40:31,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:31,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:40:31,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:40:31,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-10-13 16:40:31,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 53 transitions, 355 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:31,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:31,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-10-13 16:40:31,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:31,663 INFO L124 PetriNetUnfolderBase]: 55/206 cut-off events. [2024-10-13 16:40:31,663 INFO L125 PetriNetUnfolderBase]: For 340/343 co-relation queries the response was YES. [2024-10-13 16:40:31,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 206 events. 55/206 cut-off events. For 340/343 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 739 event pairs, 16 based on Foata normal form. 6/212 useless extension candidates. Maximal degree in co-relation 554. Up to 60 conditions per place. [2024-10-13 16:40:31,665 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 59 selfloop transitions, 13 changer transitions 1/77 dead transitions. [2024-10-13 16:40:31,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 77 transitions, 573 flow [2024-10-13 16:40:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 16:40:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 16:40:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-10-13 16:40:31,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4327956989247312 [2024-10-13 16:40:31,666 INFO L175 Difference]: Start difference. First operand has 88 places, 53 transitions, 355 flow. Second operand 12 states and 161 transitions. [2024-10-13 16:40:31,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 77 transitions, 573 flow [2024-10-13 16:40:31,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 77 transitions, 558 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-13 16:40:31,669 INFO L231 Difference]: Finished difference. Result has 98 places, 56 transitions, 406 flow [2024-10-13 16:40:31,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=406, PETRI_PLACES=98, PETRI_TRANSITIONS=56} [2024-10-13 16:40:31,670 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 65 predicate places. [2024-10-13 16:40:31,670 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 56 transitions, 406 flow [2024-10-13 16:40:31,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:31,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:31,670 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:31,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 16:40:31,670 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:31,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:31,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1748830505, now seen corresponding path program 1 times [2024-10-13 16:40:31,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:31,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579879849] [2024-10-13 16:40:31,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:31,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:40:31,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:31,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579879849] [2024-10-13 16:40:31,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579879849] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:31,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:31,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:40:31,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954933756] [2024-10-13 16:40:31,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:31,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:40:31,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:31,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:40:31,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:40:31,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-10-13 16:40:31,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 56 transitions, 406 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:31,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:31,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-10-13 16:40:31,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:32,040 INFO L124 PetriNetUnfolderBase]: 53/195 cut-off events. [2024-10-13 16:40:32,040 INFO L125 PetriNetUnfolderBase]: For 444/447 co-relation queries the response was YES. [2024-10-13 16:40:32,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 195 events. 53/195 cut-off events. For 444/447 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 693 event pairs, 10 based on Foata normal form. 6/201 useless extension candidates. Maximal degree in co-relation 564. Up to 67 conditions per place. [2024-10-13 16:40:32,041 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 61 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-10-13 16:40:32,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 77 transitions, 641 flow [2024-10-13 16:40:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:40:32,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:40:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-10-13 16:40:32,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4551971326164875 [2024-10-13 16:40:32,042 INFO L175 Difference]: Start difference. First operand has 98 places, 56 transitions, 406 flow. Second operand 9 states and 127 transitions. [2024-10-13 16:40:32,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 77 transitions, 641 flow [2024-10-13 16:40:32,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 77 transitions, 589 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-10-13 16:40:32,045 INFO L231 Difference]: Finished difference. Result has 93 places, 55 transitions, 381 flow [2024-10-13 16:40:32,045 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=381, PETRI_PLACES=93, PETRI_TRANSITIONS=55} [2024-10-13 16:40:32,045 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 60 predicate places. [2024-10-13 16:40:32,046 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 55 transitions, 381 flow [2024-10-13 16:40:32,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:32,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:32,046 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:32,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 16:40:32,046 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:32,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:32,046 INFO L85 PathProgramCache]: Analyzing trace with hash -873880944, now seen corresponding path program 4 times [2024-10-13 16:40:32,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:32,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917219495] [2024-10-13 16:40:32,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:32,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:40:32,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:32,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917219495] [2024-10-13 16:40:32,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917219495] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:32,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:32,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:40:32,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184733766] [2024-10-13 16:40:32,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:32,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:40:32,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:32,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:40:32,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:40:32,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-10-13 16:40:32,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 55 transitions, 381 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:32,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:32,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-10-13 16:40:32,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:32,409 INFO L124 PetriNetUnfolderBase]: 51/194 cut-off events. [2024-10-13 16:40:32,409 INFO L125 PetriNetUnfolderBase]: For 334/337 co-relation queries the response was YES. [2024-10-13 16:40:32,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 194 events. 51/194 cut-off events. For 334/337 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 672 event pairs, 4 based on Foata normal form. 6/200 useless extension candidates. Maximal degree in co-relation 514. Up to 70 conditions per place. [2024-10-13 16:40:32,410 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 50 selfloop transitions, 14 changer transitions 0/68 dead transitions. [2024-10-13 16:40:32,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 68 transitions, 535 flow [2024-10-13 16:40:32,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:40:32,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:40:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-10-13 16:40:32,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-10-13 16:40:32,411 INFO L175 Difference]: Start difference. First operand has 93 places, 55 transitions, 381 flow. Second operand 10 states and 131 transitions. [2024-10-13 16:40:32,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 68 transitions, 535 flow [2024-10-13 16:40:32,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 68 transitions, 504 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-10-13 16:40:32,414 INFO L231 Difference]: Finished difference. Result has 93 places, 54 transitions, 374 flow [2024-10-13 16:40:32,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=374, PETRI_PLACES=93, PETRI_TRANSITIONS=54} [2024-10-13 16:40:32,415 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 60 predicate places. [2024-10-13 16:40:32,415 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 54 transitions, 374 flow [2024-10-13 16:40:32,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:32,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:32,415 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:32,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 16:40:32,415 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:32,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:32,416 INFO L85 PathProgramCache]: Analyzing trace with hash 90605953, now seen corresponding path program 1 times [2024-10-13 16:40:32,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:32,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382738742] [2024-10-13 16:40:32,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:32,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:40:32,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:32,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382738742] [2024-10-13 16:40:32,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382738742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:32,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:32,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:40:32,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939472608] [2024-10-13 16:40:32,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:32,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:40:32,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:32,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:40:32,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:40:32,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-10-13 16:40:32,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 54 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:32,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:32,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-10-13 16:40:32,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:32,769 INFO L124 PetriNetUnfolderBase]: 49/189 cut-off events. [2024-10-13 16:40:32,770 INFO L125 PetriNetUnfolderBase]: For 317/320 co-relation queries the response was YES. [2024-10-13 16:40:32,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 189 events. 49/189 cut-off events. For 317/320 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 636 event pairs, 18 based on Foata normal form. 6/195 useless extension candidates. Maximal degree in co-relation 478. Up to 79 conditions per place. [2024-10-13 16:40:32,771 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 47 selfloop transitions, 7 changer transitions 11/69 dead transitions. [2024-10-13 16:40:32,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 69 transitions, 532 flow [2024-10-13 16:40:32,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 16:40:32,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 16:40:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-10-13 16:40:32,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-10-13 16:40:32,772 INFO L175 Difference]: Start difference. First operand has 93 places, 54 transitions, 374 flow. Second operand 8 states and 116 transitions. [2024-10-13 16:40:32,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 69 transitions, 532 flow [2024-10-13 16:40:32,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 69 transitions, 496 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-10-13 16:40:32,775 INFO L231 Difference]: Finished difference. Result has 90 places, 50 transitions, 322 flow [2024-10-13 16:40:32,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=322, PETRI_PLACES=90, PETRI_TRANSITIONS=50} [2024-10-13 16:40:32,775 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 57 predicate places. [2024-10-13 16:40:32,776 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 50 transitions, 322 flow [2024-10-13 16:40:32,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:32,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:32,776 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:32,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 16:40:32,776 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:32,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:32,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1620829433, now seen corresponding path program 1 times [2024-10-13 16:40:32,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:32,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166979047] [2024-10-13 16:40:32,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:32,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:40:32,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:32,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166979047] [2024-10-13 16:40:32,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166979047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:32,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:32,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:40:32,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307844715] [2024-10-13 16:40:32,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:32,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:40:33,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:33,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:40:33,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:40:33,020 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-10-13 16:40:33,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 50 transitions, 322 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:33,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:33,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-10-13 16:40:33,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:33,124 INFO L124 PetriNetUnfolderBase]: 37/153 cut-off events. [2024-10-13 16:40:33,125 INFO L125 PetriNetUnfolderBase]: For 213/215 co-relation queries the response was YES. [2024-10-13 16:40:33,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 153 events. 37/153 cut-off events. For 213/215 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 424 event pairs, 14 based on Foata normal form. 5/158 useless extension candidates. Maximal degree in co-relation 343. Up to 54 conditions per place. [2024-10-13 16:40:33,126 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 36 selfloop transitions, 5 changer transitions 16/61 dead transitions. [2024-10-13 16:40:33,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 61 transitions, 456 flow [2024-10-13 16:40:33,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:40:33,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:40:33,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-10-13 16:40:33,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-10-13 16:40:33,127 INFO L175 Difference]: Start difference. First operand has 90 places, 50 transitions, 322 flow. Second operand 9 states and 118 transitions. [2024-10-13 16:40:33,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 61 transitions, 456 flow [2024-10-13 16:40:33,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 61 transitions, 435 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-10-13 16:40:33,129 INFO L231 Difference]: Finished difference. Result has 85 places, 43 transitions, 283 flow [2024-10-13 16:40:33,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=283, PETRI_PLACES=85, PETRI_TRANSITIONS=43} [2024-10-13 16:40:33,129 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2024-10-13 16:40:33,129 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 43 transitions, 283 flow [2024-10-13 16:40:33,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:33,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:33,130 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:33,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 16:40:33,130 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:33,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:33,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1075185427, now seen corresponding path program 2 times [2024-10-13 16:40:33,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:33,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88990830] [2024-10-13 16:40:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:33,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:40:33,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:33,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88990830] [2024-10-13 16:40:33,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88990830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:33,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:33,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:40:33,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210391875] [2024-10-13 16:40:33,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:33,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:40:33,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:33,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:40:33,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:40:33,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-10-13 16:40:33,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 43 transitions, 283 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:33,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:33,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-10-13 16:40:33,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:33,408 INFO L124 PetriNetUnfolderBase]: 19/99 cut-off events. [2024-10-13 16:40:33,408 INFO L125 PetriNetUnfolderBase]: For 154/156 co-relation queries the response was YES. [2024-10-13 16:40:33,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 99 events. 19/99 cut-off events. For 154/156 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 181 event pairs, 10 based on Foata normal form. 5/104 useless extension candidates. Maximal degree in co-relation 213. Up to 29 conditions per place. [2024-10-13 16:40:33,409 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 32 selfloop transitions, 3 changer transitions 11/50 dead transitions. [2024-10-13 16:40:33,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 50 transitions, 387 flow [2024-10-13 16:40:33,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:40:33,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:40:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-10-13 16:40:33,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-10-13 16:40:33,410 INFO L175 Difference]: Start difference. First operand has 85 places, 43 transitions, 283 flow. Second operand 7 states and 91 transitions. [2024-10-13 16:40:33,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 50 transitions, 387 flow [2024-10-13 16:40:33,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 50 transitions, 360 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-10-13 16:40:33,412 INFO L231 Difference]: Finished difference. Result has 71 places, 39 transitions, 242 flow [2024-10-13 16:40:33,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=71, PETRI_TRANSITIONS=39} [2024-10-13 16:40:33,412 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 38 predicate places. [2024-10-13 16:40:33,412 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 39 transitions, 242 flow [2024-10-13 16:40:33,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:33,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:33,413 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:33,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 16:40:33,413 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:40:33,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:33,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1320505229, now seen corresponding path program 3 times [2024-10-13 16:40:33,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:33,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404113064] [2024-10-13 16:40:33,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:33,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:40:33,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:33,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404113064] [2024-10-13 16:40:33,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404113064] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:33,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:33,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:40:33,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198700175] [2024-10-13 16:40:33,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:33,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:40:33,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:33,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:40:33,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:40:33,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-10-13 16:40:33,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 39 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:33,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:33,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-10-13 16:40:33,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:33,661 INFO L124 PetriNetUnfolderBase]: 9/67 cut-off events. [2024-10-13 16:40:33,662 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2024-10-13 16:40:33,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 67 events. 9/67 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 3/70 useless extension candidates. Maximal degree in co-relation 185. Up to 26 conditions per place. [2024-10-13 16:40:33,662 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2024-10-13 16:40:33,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 42 transitions, 321 flow [2024-10-13 16:40:33,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:40:33,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:40:33,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-10-13 16:40:33,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2024-10-13 16:40:33,663 INFO L175 Difference]: Start difference. First operand has 71 places, 39 transitions, 242 flow. Second operand 7 states and 83 transitions. [2024-10-13 16:40:33,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 42 transitions, 321 flow [2024-10-13 16:40:33,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 42 transitions, 307 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-10-13 16:40:33,664 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-10-13 16:40:33,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-10-13 16:40:33,665 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2024-10-13 16:40:33,665 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-10-13 16:40:33,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 16:40:33,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2024-10-13 16:40:33,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-13 16:40:33,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-13 16:40:33,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-13 16:40:33,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2024-10-13 16:40:33,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-13 16:40:33,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-10-13 16:40:33,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-10-13 16:40:33,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-10-13 16:40:33,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-13 16:40:33,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-13 16:40:33,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-13 16:40:33,671 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-13 16:40:33,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 16:40:33,671 INFO L407 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:33,676 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 16:40:33,677 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 16:40:33,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 04:40:33 BasicIcfg [2024-10-13 16:40:33,681 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 16:40:33,682 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:40:33,682 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:40:33,682 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:40:33,682 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:26" (3/4) ... [2024-10-13 16:40:33,683 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 16:40:33,686 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-13 16:40:33,689 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2024-10-13 16:40:33,689 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-13 16:40:33,689 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-13 16:40:33,756 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 16:40:33,757 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 16:40:33,757 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:40:33,757 INFO L158 Benchmark]: Toolchain (without parser) took 8371.46ms. Allocated memory was 176.2MB in the beginning and 299.9MB in the end (delta: 123.7MB). Free memory was 105.9MB in the beginning and 249.9MB in the end (delta: -144.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:40:33,758 INFO L158 Benchmark]: CDTParser took 0.82ms. Allocated memory is still 176.2MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:40:33,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 457.33ms. Allocated memory is still 176.2MB. Free memory was 105.7MB in the beginning and 131.5MB in the end (delta: -25.8MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2024-10-13 16:40:33,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.06ms. Allocated memory is still 176.2MB. Free memory was 131.5MB in the beginning and 129.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:40:33,758 INFO L158 Benchmark]: Boogie Preprocessor took 34.95ms. Allocated memory is still 176.2MB. Free memory was 129.4MB in the beginning and 127.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:40:33,759 INFO L158 Benchmark]: RCFGBuilder took 428.42ms. Allocated memory is still 176.2MB. Free memory was 127.3MB in the beginning and 103.4MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-13 16:40:33,759 INFO L158 Benchmark]: TraceAbstraction took 7328.23ms. Allocated memory was 176.2MB in the beginning and 299.9MB in the end (delta: 123.7MB). Free memory was 102.1MB in the beginning and 254.1MB in the end (delta: -151.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:40:33,759 INFO L158 Benchmark]: Witness Printer took 75.46ms. Allocated memory is still 299.9MB. Free memory was 253.0MB in the beginning and 249.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:40:33,760 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82ms. Allocated memory is still 176.2MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 457.33ms. Allocated memory is still 176.2MB. Free memory was 105.7MB in the beginning and 131.5MB in the end (delta: -25.8MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.06ms. Allocated memory is still 176.2MB. Free memory was 131.5MB in the beginning and 129.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.95ms. Allocated memory is still 176.2MB. Free memory was 129.4MB in the beginning and 127.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 428.42ms. Allocated memory is still 176.2MB. Free memory was 127.3MB in the beginning and 103.4MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 7328.23ms. Allocated memory was 176.2MB in the beginning and 299.9MB in the end (delta: 123.7MB). Free memory was 102.1MB in the beginning and 254.1MB in the end (delta: -151.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 75.46ms. Allocated memory is still 299.9MB. Free memory was 253.0MB in the beginning and 249.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 937]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 937]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 944]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 944]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 932]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 932]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 46 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.2s, OverallIterations: 19, TraceHistogramMax: 10, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 582 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 500 mSDsluCounter, 362 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 341 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2045 IncrementalHoareTripleChecker+Invalid, 2104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 21 mSDtfsCounter, 2045 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 335 GetRequests, 148 SyntacticMatches, 11 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=406occurred in iteration=13, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 659 NumberOfCodeBlocks, 629 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 694 ConstructedInterpolants, 3 QuantifiedInterpolants, 3766 SizeOfPredicates, 21 NumberOfNonLiveVariables, 403 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 27 InterpolantComputations, 16 PerfectInterpolantSequences, 1397/1728 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 16:40:33,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE