./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_05-funloop_hard2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 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_05-funloop_hard2.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 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:53:01,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:53:01,849 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:53:01,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:53:01,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:53:01,884 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:53:01,885 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:53:01,885 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:53:01,885 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:53:01,886 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:53:01,886 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:53:01,886 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:53:01,886 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:53:01,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:53:01,887 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:53:01,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:53:01,889 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:53:01,891 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:53:01,891 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:53:01,892 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:53:01,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:53:01,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:53:01,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:53:01,895 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:53:01,895 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:53:01,895 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:53:01,895 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:53:01,895 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:53:01,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:53:01,896 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:53:01,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:53:01,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:53:01,896 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:53:01,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:53:01,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:53:01,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:53:01,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:53:01,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:53:01,897 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:53:01,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:53:01,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:53:01,898 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:53:01,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:53:01,899 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:53:01,899 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2024-10-14 23:53:02,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:53:02,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:53:02,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:53:02,135 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:53:02,135 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:53:02,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-10-14 23:53:03,477 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:53:03,740 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:53:03,740 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-10-14 23:53:03,757 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/924a6ff2c/32e61019ae2a43eb9c6d85aa08152a3c/FLAG33225b46e [2024-10-14 23:53:03,772 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/924a6ff2c/32e61019ae2a43eb9c6d85aa08152a3c [2024-10-14 23:53:03,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:53:03,777 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:53:03,780 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:53:03,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:53:03,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:53:03,785 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:03" (1/1) ... [2024-10-14 23:53:03,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c3a85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:03, skipping insertion in model container [2024-10-14 23:53:03,785 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:03" (1/1) ... [2024-10-14 23:53:03,826 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:53:04,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:53:04,303 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:53:04,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:53:04,403 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:53:04,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04 WrapperNode [2024-10-14 23:53:04,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:53:04,405 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:53:04,406 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:53:04,406 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:53:04,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04" (1/1) ... [2024-10-14 23:53:04,436 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04" (1/1) ... [2024-10-14 23:53:04,467 INFO L138 Inliner]: procedures = 262, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2024-10-14 23:53:04,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:53:04,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:53:04,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:53:04,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:53:04,481 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04" (1/1) ... [2024-10-14 23:53:04,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04" (1/1) ... [2024-10-14 23:53:04,484 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04" (1/1) ... [2024-10-14 23:53:04,500 INFO L175 MemorySlicer]: Split 7 memory accesses to 1 slices as follows [7]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 4 writes are split as follows [4]. [2024-10-14 23:53:04,501 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04" (1/1) ... [2024-10-14 23:53:04,504 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04" (1/1) ... [2024-10-14 23:53:04,513 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04" (1/1) ... [2024-10-14 23:53:04,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04" (1/1) ... [2024-10-14 23:53:04,520 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04" (1/1) ... [2024-10-14 23:53:04,521 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04" (1/1) ... [2024-10-14 23:53:04,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:53:04,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:53:04,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:53:04,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:53:04,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04" (1/1) ... [2024-10-14 23:53:04,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:53:04,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:04,565 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) [2024-10-14 23:53:04,572 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 [2024-10-14 23:53:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 23:53:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:53:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:53:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 23:53:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:53:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 23:53:04,625 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 23:53:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:53:04,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:53:04,628 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:53:04,773 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:53:04,775 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:53:04,948 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:53:04,948 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:53:05,012 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:53:05,012 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 23:53:05,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:05 BoogieIcfgContainer [2024-10-14 23:53:05,013 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:53:05,014 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:53:05,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:53:05,017 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:53:05,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:53:03" (1/3) ... [2024-10-14 23:53:05,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@942f333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:05, skipping insertion in model container [2024-10-14 23:53:05,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04" (2/3) ... [2024-10-14 23:53:05,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@942f333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:05, skipping insertion in model container [2024-10-14 23:53:05,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:05" (3/3) ... [2024-10-14 23:53:05,019 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2024-10-14 23:53:05,034 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:53:05,034 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-14 23:53:05,035 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:53:05,085 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:53:05,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 47 transitions, 98 flow [2024-10-14 23:53:05,150 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2024-10-14 23:53:05,150 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:53:05,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 3/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 111 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-10-14 23:53:05,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 47 transitions, 98 flow [2024-10-14 23:53:05,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 46 transitions, 95 flow [2024-10-14 23:53:05,170 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:53:05,179 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;@235a1ec9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:53:05,180 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-14 23:53:05,182 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:53:05,185 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:53:05,185 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:53:05,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:05,188 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:53:05,189 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:05,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:05,194 INFO L85 PathProgramCache]: Analyzing trace with hash 289263, now seen corresponding path program 1 times [2024-10-14 23:53:05,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:05,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946373987] [2024-10-14 23:53:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:05,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:05,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:05,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:05,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946373987] [2024-10-14 23:53:05,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946373987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:05,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:05,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:53:05,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731737559] [2024-10-14 23:53:05,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:05,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:05,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:05,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:05,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:53:05,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:53:05,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:05,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:05,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:53:05,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:05,593 INFO L124 PetriNetUnfolderBase]: 128/382 cut-off events. [2024-10-14 23:53:05,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:53:05,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 382 events. 128/382 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2034 event pairs, 104 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 627. Up to 255 conditions per place. [2024-10-14 23:53:05,597 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 25 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-10-14 23:53:05,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 151 flow [2024-10-14 23:53:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:53:05,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:53:05,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-10-14 23:53:05,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-10-14 23:53:05,613 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 95 flow. Second operand 4 states and 98 transitions. [2024-10-14 23:53:05,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 151 flow [2024-10-14 23:53:05,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:53:05,618 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 100 flow [2024-10-14 23:53:05,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-14 23:53:05,624 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2024-10-14 23:53:05,628 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 100 flow [2024-10-14 23:53:05,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:05,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:05,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-14 23:53:05,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:53:05,630 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:05,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:05,631 INFO L85 PathProgramCache]: Analyzing trace with hash 8967419, now seen corresponding path program 1 times [2024-10-14 23:53:05,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:05,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201644898] [2024-10-14 23:53:05,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:05,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:05,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:05,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201644898] [2024-10-14 23:53:05,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201644898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:05,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:05,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:53:05,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196926969] [2024-10-14 23:53:05,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:05,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:05,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:05,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:05,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:53:05,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:53:05,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:05,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:05,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:53:05,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:05,909 INFO L124 PetriNetUnfolderBase]: 128/385 cut-off events. [2024-10-14 23:53:05,909 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 23:53:05,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 385 events. 128/385 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2028 event pairs, 104 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 631. Up to 259 conditions per place. [2024-10-14 23:53:05,913 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 28 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2024-10-14 23:53:05,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 170 flow [2024-10-14 23:53:05,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:53:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:53:05,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-10-14 23:53:05,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-10-14 23:53:05,915 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 100 flow. Second operand 4 states and 101 transitions. [2024-10-14 23:53:05,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 170 flow [2024-10-14 23:53:05,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:53:05,916 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 114 flow [2024-10-14 23:53:05,916 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2024-10-14 23:53:05,917 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2024-10-14 23:53:05,919 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 114 flow [2024-10-14 23:53:05,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:05,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:05,919 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:53:05,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:53:05,920 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:05,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:05,922 INFO L85 PathProgramCache]: Analyzing trace with hash 860675524, now seen corresponding path program 1 times [2024-10-14 23:53:05,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:05,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910899164] [2024-10-14 23:53:05,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:05,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:53:06,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:06,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910899164] [2024-10-14 23:53:06,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910899164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:06,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:06,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:53:06,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895553704] [2024-10-14 23:53:06,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:06,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:53:06,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:06,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:53:06,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:53:06,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:53:06,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:06,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:06,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:53:06,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:06,091 INFO L124 PetriNetUnfolderBase]: 128/384 cut-off events. [2024-10-14 23:53:06,092 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 23:53:06,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 384 events. 128/384 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2018 event pairs, 104 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 641. Up to 258 conditions per place. [2024-10-14 23:53:06,094 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 26 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-10-14 23:53:06,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 170 flow [2024-10-14 23:53:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:53:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:53:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-14 23:53:06,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-10-14 23:53:06,096 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 114 flow. Second operand 3 states and 80 transitions. [2024-10-14 23:53:06,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 170 flow [2024-10-14 23:53:06,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:53:06,097 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 116 flow [2024-10-14 23:53:06,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-10-14 23:53:06,098 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2024-10-14 23:53:06,098 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 116 flow [2024-10-14 23:53:06,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:06,098 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:06,098 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:06,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:53:06,098 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:06,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:06,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1403606696, now seen corresponding path program 1 times [2024-10-14 23:53:06,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:06,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294020122] [2024-10-14 23:53:06,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:06,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:06,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:06,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294020122] [2024-10-14 23:53:06,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294020122] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:06,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661988937] [2024-10-14 23:53:06,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:06,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:06,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:06,209 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) [2024-10-14 23:53:06,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 23:53:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:06,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:53:06,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:06,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:53:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:06,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661988937] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:53:06,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:53:06,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-14 23:53:06,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544421933] [2024-10-14 23:53:06,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:53:06,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:06,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:06,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:06,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:06,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:53:06,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 116 flow. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:06,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:06,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:53:06,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:06,503 INFO L124 PetriNetUnfolderBase]: 128/388 cut-off events. [2024-10-14 23:53:06,503 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-14 23:53:06,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 388 events. 128/388 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2015 event pairs, 104 based on Foata normal form. 2/322 useless extension candidates. Maximal degree in co-relation 638. Up to 256 conditions per place. [2024-10-14 23:53:06,507 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 26 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2024-10-14 23:53:06,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 200 flow [2024-10-14 23:53:06,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:53:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:53:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-10-14 23:53:06,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-10-14 23:53:06,509 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 116 flow. Second operand 7 states and 154 transitions. [2024-10-14 23:53:06,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 200 flow [2024-10-14 23:53:06,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:53:06,511 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 145 flow [2024-10-14 23:53:06,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=145, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-10-14 23:53:06,511 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2024-10-14 23:53:06,512 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 145 flow [2024-10-14 23:53:06,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:06,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:06,512 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:06,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 23:53:06,717 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 [2024-10-14 23:53:06,718 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:06,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:06,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1887628104, now seen corresponding path program 2 times [2024-10-14 23:53:06,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:06,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809029663] [2024-10-14 23:53:06,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:06,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:06,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:06,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809029663] [2024-10-14 23:53:06,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809029663] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:06,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268399764] [2024-10-14 23:53:06,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:53:06,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:06,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:06,876 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) [2024-10-14 23:53:06,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 23:53:06,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 23:53:06,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:53:06,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 23:53:06,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:06,964 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 [2024-10-14 23:53:07,059 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 14 treesize of output 10 [2024-10-14 23:53:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 23:53:07,073 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:53:07,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268399764] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:07,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:53:07,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2024-10-14 23:53:07,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098509682] [2024-10-14 23:53:07,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:07,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:53:07,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:07,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:53:07,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-14 23:53:07,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:53:07,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:07,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:07,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:53:07,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:07,259 INFO L124 PetriNetUnfolderBase]: 244/583 cut-off events. [2024-10-14 23:53:07,260 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 23:53:07,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 583 events. 244/583 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2933 event pairs, 38 based on Foata normal form. 21/500 useless extension candidates. Maximal degree in co-relation 1047. Up to 310 conditions per place. [2024-10-14 23:53:07,262 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 73 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-10-14 23:53:07,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 99 transitions, 415 flow [2024-10-14 23:53:07,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:53:07,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:53:07,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-10-14 23:53:07,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6524822695035462 [2024-10-14 23:53:07,264 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 145 flow. Second operand 6 states and 184 transitions. [2024-10-14 23:53:07,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 99 transitions, 415 flow [2024-10-14 23:53:07,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 401 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-14 23:53:07,267 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 225 flow [2024-10-14 23:53:07,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-10-14 23:53:07,267 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2024-10-14 23:53:07,267 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 225 flow [2024-10-14 23:53:07,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:07,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:07,268 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:07,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 23:53:07,472 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 [2024-10-14 23:53:07,473 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:07,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:07,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1854188663, now seen corresponding path program 1 times [2024-10-14 23:53:07,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:07,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399367325] [2024-10-14 23:53:07,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:07,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 23:53:07,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:07,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399367325] [2024-10-14 23:53:07,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399367325] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:07,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:07,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:53:07,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581072048] [2024-10-14 23:53:07,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:07,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:53:07,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:07,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:53:07,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:53:07,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-14 23:53:07,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:07,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:07,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-14 23:53:07,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:07,629 INFO L124 PetriNetUnfolderBase]: 235/663 cut-off events. [2024-10-14 23:53:07,630 INFO L125 PetriNetUnfolderBase]: For 216/245 co-relation queries the response was YES. [2024-10-14 23:53:07,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 663 events. 235/663 cut-off events. For 216/245 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3603 event pairs, 73 based on Foata normal form. 9/609 useless extension candidates. Maximal degree in co-relation 1327. Up to 297 conditions per place. [2024-10-14 23:53:07,634 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 61 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2024-10-14 23:53:07,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 80 transitions, 401 flow [2024-10-14 23:53:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:53:07,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:53:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-14 23:53:07,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2024-10-14 23:53:07,635 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 225 flow. Second operand 3 states and 102 transitions. [2024-10-14 23:53:07,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 80 transitions, 401 flow [2024-10-14 23:53:07,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 401 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:53:07,638 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 219 flow [2024-10-14 23:53:07,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-10-14 23:53:07,640 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 19 predicate places. [2024-10-14 23:53:07,640 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 219 flow [2024-10-14 23:53:07,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:07,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:07,641 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:07,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 23:53:07,641 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:07,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:07,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1854156683, now seen corresponding path program 1 times [2024-10-14 23:53:07,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:07,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215682110] [2024-10-14 23:53:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:07,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:07,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:07,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215682110] [2024-10-14 23:53:07,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215682110] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:07,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305317592] [2024-10-14 23:53:07,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:07,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:07,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:07,791 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) [2024-10-14 23:53:07,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 23:53:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:07,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 23:53:07,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:07,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:53:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:07,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305317592] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:53:07,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:53:07,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-14 23:53:07,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51093465] [2024-10-14 23:53:07,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:53:07,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 23:53:07,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:07,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 23:53:07,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-14 23:53:07,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:53:07,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 219 flow. Second operand has 16 states, 16 states have (on average 18.3125) internal successors, (293), 16 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:07,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:07,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:53:07,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:08,206 INFO L124 PetriNetUnfolderBase]: 235/695 cut-off events. [2024-10-14 23:53:08,207 INFO L125 PetriNetUnfolderBase]: For 286/306 co-relation queries the response was YES. [2024-10-14 23:53:08,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 695 events. 235/695 cut-off events. For 286/306 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3805 event pairs, 147 based on Foata normal form. 7/649 useless extension candidates. Maximal degree in co-relation 1430. Up to 467 conditions per place. [2024-10-14 23:53:08,212 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 36 selfloop transitions, 15 changer transitions 0/68 dead transitions. [2024-10-14 23:53:08,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 68 transitions, 369 flow [2024-10-14 23:53:08,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 23:53:08,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 23:53:08,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 300 transitions. [2024-10-14 23:53:08,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2024-10-14 23:53:08,214 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 219 flow. Second operand 15 states and 300 transitions. [2024-10-14 23:53:08,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 68 transitions, 369 flow [2024-10-14 23:53:08,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 68 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:53:08,220 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 314 flow [2024-10-14 23:53:08,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=314, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-10-14 23:53:08,222 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 36 predicate places. [2024-10-14 23:53:08,223 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 314 flow [2024-10-14 23:53:08,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.3125) internal successors, (293), 16 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:08,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:08,223 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:08,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 23:53:08,424 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 [2024-10-14 23:53:08,424 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:08,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:08,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1606643915, now seen corresponding path program 2 times [2024-10-14 23:53:08,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:08,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464945922] [2024-10-14 23:53:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:08,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:08,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:08,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464945922] [2024-10-14 23:53:08,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464945922] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:08,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793210064] [2024-10-14 23:53:08,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:53:08,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:08,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:08,787 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) [2024-10-14 23:53:08,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 23:53:08,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 23:53:08,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:53:08,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 23:53:08,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:08,867 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 [2024-10-14 23:53:09,067 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 14 treesize of output 10 [2024-10-14 23:53:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-14 23:53:09,090 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:53:09,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793210064] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:09,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:53:09,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 19 [2024-10-14 23:53:09,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444964307] [2024-10-14 23:53:09,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:09,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:53:09,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:09,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:53:09,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-14 23:53:09,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:53:09,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 314 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:09,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:09,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:53:09,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:09,424 INFO L124 PetriNetUnfolderBase]: 294/783 cut-off events. [2024-10-14 23:53:09,424 INFO L125 PetriNetUnfolderBase]: For 336/363 co-relation queries the response was YES. [2024-10-14 23:53:09,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767 conditions, 783 events. 294/783 cut-off events. For 336/363 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4257 event pairs, 67 based on Foata normal form. 18/764 useless extension candidates. Maximal degree in co-relation 1661. Up to 459 conditions per place. [2024-10-14 23:53:09,428 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 74 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2024-10-14 23:53:09,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 101 transitions, 592 flow [2024-10-14 23:53:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:53:09,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:53:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-10-14 23:53:09,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.599290780141844 [2024-10-14 23:53:09,430 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 314 flow. Second operand 6 states and 169 transitions. [2024-10-14 23:53:09,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 101 transitions, 592 flow [2024-10-14 23:53:09,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 574 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-14 23:53:09,437 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 384 flow [2024-10-14 23:53:09,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2024-10-14 23:53:09,439 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 42 predicate places. [2024-10-14 23:53:09,440 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 384 flow [2024-10-14 23:53:09,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:09,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:09,440 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:09,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 23:53:09,641 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 [2024-10-14 23:53:09,642 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:09,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash -696031829, now seen corresponding path program 1 times [2024-10-14 23:53:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159179231] [2024-10-14 23:53:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:09,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-14 23:53:09,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:09,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159179231] [2024-10-14 23:53:09,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159179231] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:09,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:09,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:53:09,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438639059] [2024-10-14 23:53:09,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:09,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:53:09,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:09,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:53:09,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:53:09,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:53:09,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 75 transitions, 384 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:09,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:09,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:53:09,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:10,014 INFO L124 PetriNetUnfolderBase]: 284/775 cut-off events. [2024-10-14 23:53:10,014 INFO L125 PetriNetUnfolderBase]: For 680/701 co-relation queries the response was YES. [2024-10-14 23:53:10,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1954 conditions, 775 events. 284/775 cut-off events. For 680/701 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4271 event pairs, 90 based on Foata normal form. 27/764 useless extension candidates. Maximal degree in co-relation 1850. Up to 499 conditions per place. [2024-10-14 23:53:10,018 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 76 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2024-10-14 23:53:10,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 101 transitions, 644 flow [2024-10-14 23:53:10,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:53:10,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:53:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-10-14 23:53:10,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.599290780141844 [2024-10-14 23:53:10,019 INFO L175 Difference]: Start difference. First operand has 89 places, 75 transitions, 384 flow. Second operand 6 states and 169 transitions. [2024-10-14 23:53:10,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 101 transitions, 644 flow [2024-10-14 23:53:10,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 101 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:53:10,023 INFO L231 Difference]: Finished difference. Result has 93 places, 74 transitions, 392 flow [2024-10-14 23:53:10,023 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=93, PETRI_TRANSITIONS=74} [2024-10-14 23:53:10,024 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2024-10-14 23:53:10,024 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 74 transitions, 392 flow [2024-10-14 23:53:10,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:10,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:10,024 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:10,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 23:53:10,025 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:10,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:10,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1733645918, now seen corresponding path program 1 times [2024-10-14 23:53:10,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:10,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524838820] [2024-10-14 23:53:10,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:10,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-14 23:53:10,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:10,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524838820] [2024-10-14 23:53:10,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524838820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:10,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:10,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:53:10,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6332023] [2024-10-14 23:53:10,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:10,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:53:10,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:10,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:53:10,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:53:10,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:53:10,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 74 transitions, 392 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:10,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:10,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:53:10,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:10,323 INFO L124 PetriNetUnfolderBase]: 280/761 cut-off events. [2024-10-14 23:53:10,324 INFO L125 PetriNetUnfolderBase]: For 637/646 co-relation queries the response was YES. [2024-10-14 23:53:10,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 761 events. 280/761 cut-off events. For 637/646 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4162 event pairs, 77 based on Foata normal form. 16/741 useless extension candidates. Maximal degree in co-relation 1827. Up to 495 conditions per place. [2024-10-14 23:53:10,327 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 71 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2024-10-14 23:53:10,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 630 flow [2024-10-14 23:53:10,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:53:10,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:53:10,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-10-14 23:53:10,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5886524822695035 [2024-10-14 23:53:10,329 INFO L175 Difference]: Start difference. First operand has 93 places, 74 transitions, 392 flow. Second operand 6 states and 166 transitions. [2024-10-14 23:53:10,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 630 flow [2024-10-14 23:53:10,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 96 transitions, 595 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 23:53:10,334 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 383 flow [2024-10-14 23:53:10,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=383, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2024-10-14 23:53:10,334 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2024-10-14 23:53:10,334 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 383 flow [2024-10-14 23:53:10,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:10,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:10,335 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:10,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 23:53:10,335 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:10,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash 618193227, now seen corresponding path program 1 times [2024-10-14 23:53:10,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:10,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850528583] [2024-10-14 23:53:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:10,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-14 23:53:10,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:10,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850528583] [2024-10-14 23:53:10,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850528583] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:10,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:10,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:53:10,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814686785] [2024-10-14 23:53:10,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:10,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:10,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:10,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:10,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:53:10,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:53:10,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:10,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:10,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:53:10,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:10,592 INFO L124 PetriNetUnfolderBase]: 415/1098 cut-off events. [2024-10-14 23:53:10,592 INFO L125 PetriNetUnfolderBase]: For 713/735 co-relation queries the response was YES. [2024-10-14 23:53:10,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2657 conditions, 1098 events. 415/1098 cut-off events. For 713/735 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6240 event pairs, 211 based on Foata normal form. 43/1089 useless extension candidates. Maximal degree in co-relation 2553. Up to 506 conditions per place. [2024-10-14 23:53:10,597 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 100 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2024-10-14 23:53:10,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 759 flow [2024-10-14 23:53:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:53:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:53:10,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-10-14 23:53:10,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2024-10-14 23:53:10,598 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 383 flow. Second operand 4 states and 136 transitions. [2024-10-14 23:53:10,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 117 transitions, 759 flow [2024-10-14 23:53:10,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 117 transitions, 726 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 23:53:10,601 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 384 flow [2024-10-14 23:53:10,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=384, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2024-10-14 23:53:10,602 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2024-10-14 23:53:10,602 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 384 flow [2024-10-14 23:53:10,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:10,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:10,602 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:10,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 23:53:10,603 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:10,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:10,603 INFO L85 PathProgramCache]: Analyzing trace with hash -63529020, now seen corresponding path program 1 times [2024-10-14 23:53:10,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:10,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26584224] [2024-10-14 23:53:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:10,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-14 23:53:10,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:10,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26584224] [2024-10-14 23:53:10,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26584224] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:10,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:10,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:53:10,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684438751] [2024-10-14 23:53:10,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:10,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:10,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:10,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:10,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:53:10,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:53:10,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:10,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:10,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:53:10,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:10,802 INFO L124 PetriNetUnfolderBase]: 405/1082 cut-off events. [2024-10-14 23:53:10,802 INFO L125 PetriNetUnfolderBase]: For 789/804 co-relation queries the response was YES. [2024-10-14 23:53:10,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2773 conditions, 1082 events. 405/1082 cut-off events. For 789/804 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6153 event pairs, 212 based on Foata normal form. 34/1100 useless extension candidates. Maximal degree in co-relation 2668. Up to 566 conditions per place. [2024-10-14 23:53:10,808 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 92 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2024-10-14 23:53:10,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 109 transitions, 720 flow [2024-10-14 23:53:10,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:53:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:53:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-10-14 23:53:10,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6648936170212766 [2024-10-14 23:53:10,809 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 384 flow. Second operand 4 states and 125 transitions. [2024-10-14 23:53:10,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 109 transitions, 720 flow [2024-10-14 23:53:10,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 109 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:53:10,812 INFO L231 Difference]: Finished difference. Result has 97 places, 76 transitions, 400 flow [2024-10-14 23:53:10,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=400, PETRI_PLACES=97, PETRI_TRANSITIONS=76} [2024-10-14 23:53:10,813 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 50 predicate places. [2024-10-14 23:53:10,813 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 76 transitions, 400 flow [2024-10-14 23:53:10,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:10,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:10,813 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:10,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 23:53:10,813 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:10,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:10,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1958451573, now seen corresponding path program 1 times [2024-10-14 23:53:10,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:10,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837019082] [2024-10-14 23:53:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:10,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:10,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837019082] [2024-10-14 23:53:10,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837019082] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829717832] [2024-10-14 23:53:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:10,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:10,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:10,986 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) [2024-10-14 23:53:10,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 23:53:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:11,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 23:53:11,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:11,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:53:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:11,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829717832] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:53:11,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:53:11,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-10-14 23:53:11,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011412028] [2024-10-14 23:53:11,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:53:11,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-14 23:53:11,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:11,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-14 23:53:11,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-10-14 23:53:11,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:53:11,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 76 transitions, 400 flow. Second operand has 21 states, 21 states have (on average 18.523809523809526) internal successors, (389), 21 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:11,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:11,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:53:11,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:11,666 INFO L124 PetriNetUnfolderBase]: 371/1062 cut-off events. [2024-10-14 23:53:11,670 INFO L125 PetriNetUnfolderBase]: For 896/910 co-relation queries the response was YES. [2024-10-14 23:53:11,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2800 conditions, 1062 events. 371/1062 cut-off events. For 896/910 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6153 event pairs, 255 based on Foata normal form. 3/1049 useless extension candidates. Maximal degree in co-relation 2657. Up to 736 conditions per place. [2024-10-14 23:53:11,684 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 45 selfloop transitions, 21 changer transitions 0/82 dead transitions. [2024-10-14 23:53:11,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 82 transitions, 586 flow [2024-10-14 23:53:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 23:53:11,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-14 23:53:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 407 transitions. [2024-10-14 23:53:11,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41236068895643363 [2024-10-14 23:53:11,690 INFO L175 Difference]: Start difference. First operand has 97 places, 76 transitions, 400 flow. Second operand 21 states and 407 transitions. [2024-10-14 23:53:11,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 82 transitions, 586 flow [2024-10-14 23:53:11,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 82 transitions, 582 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:53:11,697 INFO L231 Difference]: Finished difference. Result has 118 places, 82 transitions, 507 flow [2024-10-14 23:53:11,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=507, PETRI_PLACES=118, PETRI_TRANSITIONS=82} [2024-10-14 23:53:11,698 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 71 predicate places. [2024-10-14 23:53:11,699 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 82 transitions, 507 flow [2024-10-14 23:53:11,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.523809523809526) internal successors, (389), 21 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:11,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:11,699 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:11,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 23:53:11,903 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,SelfDestructingSolverStorable12 [2024-10-14 23:53:11,904 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:11,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:11,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1282654220, now seen corresponding path program 2 times [2024-10-14 23:53:11,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:11,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451858053] [2024-10-14 23:53:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:11,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:12,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:12,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451858053] [2024-10-14 23:53:12,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451858053] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:12,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:12,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:53:12,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53989972] [2024-10-14 23:53:12,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:12,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:12,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:12,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:12,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:12,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-14 23:53:12,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 82 transitions, 507 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:12,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:12,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-14 23:53:12,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:12,878 INFO L124 PetriNetUnfolderBase]: 617/1542 cut-off events. [2024-10-14 23:53:12,878 INFO L125 PetriNetUnfolderBase]: For 1585/1589 co-relation queries the response was YES. [2024-10-14 23:53:12,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4241 conditions, 1542 events. 617/1542 cut-off events. For 1585/1589 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9298 event pairs, 207 based on Foata normal form. 22/1542 useless extension candidates. Maximal degree in co-relation 4070. Up to 874 conditions per place. [2024-10-14 23:53:12,887 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 112 selfloop transitions, 39 changer transitions 0/163 dead transitions. [2024-10-14 23:53:12,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 163 transitions, 1190 flow [2024-10-14 23:53:12,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 23:53:12,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 23:53:12,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 338 transitions. [2024-10-14 23:53:12,889 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4794326241134752 [2024-10-14 23:53:12,889 INFO L175 Difference]: Start difference. First operand has 118 places, 82 transitions, 507 flow. Second operand 15 states and 338 transitions. [2024-10-14 23:53:12,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 163 transitions, 1190 flow [2024-10-14 23:53:12,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 163 transitions, 1141 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-10-14 23:53:12,897 INFO L231 Difference]: Finished difference. Result has 125 places, 109 transitions, 787 flow [2024-10-14 23:53:12,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=787, PETRI_PLACES=125, PETRI_TRANSITIONS=109} [2024-10-14 23:53:12,897 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 78 predicate places. [2024-10-14 23:53:12,897 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 109 transitions, 787 flow [2024-10-14 23:53:12,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:12,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:12,898 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:12,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 23:53:12,898 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:12,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash -626349252, now seen corresponding path program 3 times [2024-10-14 23:53:12,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:12,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495475227] [2024-10-14 23:53:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:12,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:13,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:13,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495475227] [2024-10-14 23:53:13,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495475227] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:13,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:13,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:53:13,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796250207] [2024-10-14 23:53:13,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:13,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:13,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:13,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:13,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:13,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-14 23:53:13,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 109 transitions, 787 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:13,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:13,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-14 23:53:13,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:13,717 INFO L124 PetriNetUnfolderBase]: 710/1744 cut-off events. [2024-10-14 23:53:13,717 INFO L125 PetriNetUnfolderBase]: For 3886/3888 co-relation queries the response was YES. [2024-10-14 23:53:13,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5471 conditions, 1744 events. 710/1744 cut-off events. For 3886/3888 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10845 event pairs, 240 based on Foata normal form. 20/1741 useless extension candidates. Maximal degree in co-relation 5317. Up to 887 conditions per place. [2024-10-14 23:53:13,727 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 110 selfloop transitions, 55 changer transitions 0/177 dead transitions. [2024-10-14 23:53:13,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 177 transitions, 1466 flow [2024-10-14 23:53:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 23:53:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 23:53:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 349 transitions. [2024-10-14 23:53:13,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4640957446808511 [2024-10-14 23:53:13,730 INFO L175 Difference]: Start difference. First operand has 125 places, 109 transitions, 787 flow. Second operand 16 states and 349 transitions. [2024-10-14 23:53:13,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 177 transitions, 1466 flow [2024-10-14 23:53:13,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 177 transitions, 1427 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-14 23:53:13,740 INFO L231 Difference]: Finished difference. Result has 140 places, 125 transitions, 1077 flow [2024-10-14 23:53:13,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1077, PETRI_PLACES=140, PETRI_TRANSITIONS=125} [2024-10-14 23:53:13,741 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 93 predicate places. [2024-10-14 23:53:13,741 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 125 transitions, 1077 flow [2024-10-14 23:53:13,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:13,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:13,742 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:13,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 23:53:13,742 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:13,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:13,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1112743414, now seen corresponding path program 1 times [2024-10-14 23:53:13,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:13,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990698695] [2024-10-14 23:53:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:13,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:14,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:14,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990698695] [2024-10-14 23:53:14,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990698695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:14,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:14,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:53:14,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850404251] [2024-10-14 23:53:14,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:14,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:14,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:14,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:14,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:14,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-14 23:53:14,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 125 transitions, 1077 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:14,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:14,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-14 23:53:14,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:14,557 INFO L124 PetriNetUnfolderBase]: 841/2005 cut-off events. [2024-10-14 23:53:14,558 INFO L125 PetriNetUnfolderBase]: For 7540/7546 co-relation queries the response was YES. [2024-10-14 23:53:14,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7078 conditions, 2005 events. 841/2005 cut-off events. For 7540/7546 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 12868 event pairs, 243 based on Foata normal form. 27/2009 useless extension candidates. Maximal degree in co-relation 6920. Up to 1154 conditions per place. [2024-10-14 23:53:14,572 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 155 selfloop transitions, 47 changer transitions 0/214 dead transitions. [2024-10-14 23:53:14,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 214 transitions, 2055 flow [2024-10-14 23:53:14,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 23:53:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 23:53:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 299 transitions. [2024-10-14 23:53:14,574 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5301418439716312 [2024-10-14 23:53:14,574 INFO L175 Difference]: Start difference. First operand has 140 places, 125 transitions, 1077 flow. Second operand 12 states and 299 transitions. [2024-10-14 23:53:14,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 214 transitions, 2055 flow [2024-10-14 23:53:14,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 214 transitions, 1987 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-10-14 23:53:14,616 INFO L231 Difference]: Finished difference. Result has 149 places, 143 transitions, 1368 flow [2024-10-14 23:53:14,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1368, PETRI_PLACES=149, PETRI_TRANSITIONS=143} [2024-10-14 23:53:14,620 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 102 predicate places. [2024-10-14 23:53:14,620 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 143 transitions, 1368 flow [2024-10-14 23:53:14,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:14,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:14,620 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:14,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 23:53:14,621 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:14,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:14,625 INFO L85 PathProgramCache]: Analyzing trace with hash -585525972, now seen corresponding path program 4 times [2024-10-14 23:53:14,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:14,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892542856] [2024-10-14 23:53:14,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:14,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:14,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:14,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892542856] [2024-10-14 23:53:14,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892542856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:14,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:14,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:53:14,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25296759] [2024-10-14 23:53:14,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:14,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:14,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:14,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:14,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:14,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-14 23:53:14,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 143 transitions, 1368 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:14,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:14,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-14 23:53:14,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:15,531 INFO L124 PetriNetUnfolderBase]: 1069/2492 cut-off events. [2024-10-14 23:53:15,531 INFO L125 PetriNetUnfolderBase]: For 13456/13466 co-relation queries the response was YES. [2024-10-14 23:53:15,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9672 conditions, 2492 events. 1069/2492 cut-off events. For 13456/13466 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 16686 event pairs, 132 based on Foata normal form. 48/2516 useless extension candidates. Maximal degree in co-relation 9509. Up to 1029 conditions per place. [2024-10-14 23:53:15,553 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 153 selfloop transitions, 96 changer transitions 0/261 dead transitions. [2024-10-14 23:53:15,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 261 transitions, 2689 flow [2024-10-14 23:53:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 23:53:15,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 23:53:15,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 376 transitions. [2024-10-14 23:53:15,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-14 23:53:15,555 INFO L175 Difference]: Start difference. First operand has 149 places, 143 transitions, 1368 flow. Second operand 16 states and 376 transitions. [2024-10-14 23:53:15,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 261 transitions, 2689 flow [2024-10-14 23:53:15,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 261 transitions, 2587 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-10-14 23:53:15,591 INFO L231 Difference]: Finished difference. Result has 163 places, 175 transitions, 2012 flow [2024-10-14 23:53:15,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2012, PETRI_PLACES=163, PETRI_TRANSITIONS=175} [2024-10-14 23:53:15,592 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 116 predicate places. [2024-10-14 23:53:15,592 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 175 transitions, 2012 flow [2024-10-14 23:53:15,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:15,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:15,593 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:15,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 23:53:15,593 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:15,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:15,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1215157386, now seen corresponding path program 2 times [2024-10-14 23:53:15,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:15,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937831873] [2024-10-14 23:53:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:15,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:15,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:15,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937831873] [2024-10-14 23:53:15,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937831873] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:15,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:15,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:53:15,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699914946] [2024-10-14 23:53:15,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:15,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:15,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:15,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:15,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:15,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-14 23:53:15,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 175 transitions, 2012 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:15,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:15,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-14 23:53:15,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:16,879 INFO L124 PetriNetUnfolderBase]: 1246/2848 cut-off events. [2024-10-14 23:53:16,879 INFO L125 PetriNetUnfolderBase]: For 20632/20651 co-relation queries the response was YES. [2024-10-14 23:53:16,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12285 conditions, 2848 events. 1246/2848 cut-off events. For 20632/20651 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 19502 event pairs, 354 based on Foata normal form. 28/2837 useless extension candidates. Maximal degree in co-relation 12117. Up to 1719 conditions per place. [2024-10-14 23:53:16,906 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 201 selfloop transitions, 75 changer transitions 0/288 dead transitions. [2024-10-14 23:53:16,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 288 transitions, 3595 flow [2024-10-14 23:53:16,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 23:53:16,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 23:53:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 350 transitions. [2024-10-14 23:53:16,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-10-14 23:53:16,908 INFO L175 Difference]: Start difference. First operand has 163 places, 175 transitions, 2012 flow. Second operand 15 states and 350 transitions. [2024-10-14 23:53:16,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 288 transitions, 3595 flow [2024-10-14 23:53:16,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 288 transitions, 3464 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-10-14 23:53:16,984 INFO L231 Difference]: Finished difference. Result has 172 places, 207 transitions, 2646 flow [2024-10-14 23:53:16,984 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2646, PETRI_PLACES=172, PETRI_TRANSITIONS=207} [2024-10-14 23:53:16,985 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 125 predicate places. [2024-10-14 23:53:16,985 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 207 transitions, 2646 flow [2024-10-14 23:53:16,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:16,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:16,985 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:16,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 23:53:16,985 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:16,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:16,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1586084474, now seen corresponding path program 3 times [2024-10-14 23:53:16,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:16,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831404837] [2024-10-14 23:53:16,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:16,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:17,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:17,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831404837] [2024-10-14 23:53:17,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831404837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:17,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:17,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:53:17,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636937096] [2024-10-14 23:53:17,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:17,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:17,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:17,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:17,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:17,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-14 23:53:17,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 207 transitions, 2646 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:17,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:17,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-14 23:53:17,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:18,009 INFO L124 PetriNetUnfolderBase]: 1368/3119 cut-off events. [2024-10-14 23:53:18,010 INFO L125 PetriNetUnfolderBase]: For 28121/28148 co-relation queries the response was YES. [2024-10-14 23:53:18,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14402 conditions, 3119 events. 1368/3119 cut-off events. For 28121/28148 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 21881 event pairs, 378 based on Foata normal form. 34/3109 useless extension candidates. Maximal degree in co-relation 14229. Up to 1592 conditions per place. [2024-10-14 23:53:18,033 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 183 selfloop transitions, 113 changer transitions 0/308 dead transitions. [2024-10-14 23:53:18,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 308 transitions, 4114 flow [2024-10-14 23:53:18,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 23:53:18,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 23:53:18,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 361 transitions. [2024-10-14 23:53:18,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4800531914893617 [2024-10-14 23:53:18,035 INFO L175 Difference]: Start difference. First operand has 172 places, 207 transitions, 2646 flow. Second operand 16 states and 361 transitions. [2024-10-14 23:53:18,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 308 transitions, 4114 flow [2024-10-14 23:53:18,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 308 transitions, 4029 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-10-14 23:53:18,107 INFO L231 Difference]: Finished difference. Result has 183 places, 226 transitions, 3275 flow [2024-10-14 23:53:18,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3275, PETRI_PLACES=183, PETRI_TRANSITIONS=226} [2024-10-14 23:53:18,108 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 136 predicate places. [2024-10-14 23:53:18,108 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 226 transitions, 3275 flow [2024-10-14 23:53:18,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:18,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:18,108 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:18,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 23:53:18,108 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:18,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:18,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1469841914, now seen corresponding path program 4 times [2024-10-14 23:53:18,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:18,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417668666] [2024-10-14 23:53:18,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:18,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:18,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:18,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417668666] [2024-10-14 23:53:18,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417668666] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:18,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:18,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:53:18,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509533234] [2024-10-14 23:53:18,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:18,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:18,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:18,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:18,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:18,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-14 23:53:18,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 226 transitions, 3275 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:18,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:18,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-14 23:53:18,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:19,092 INFO L124 PetriNetUnfolderBase]: 1514/3444 cut-off events. [2024-10-14 23:53:19,093 INFO L125 PetriNetUnfolderBase]: For 40900/40914 co-relation queries the response was YES. [2024-10-14 23:53:19,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17034 conditions, 3444 events. 1514/3444 cut-off events. For 40900/40914 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 24505 event pairs, 192 based on Foata normal form. 76/3482 useless extension candidates. Maximal degree in co-relation 16856. Up to 1299 conditions per place. [2024-10-14 23:53:19,123 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 189 selfloop transitions, 160 changer transitions 0/361 dead transitions. [2024-10-14 23:53:19,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 361 transitions, 5184 flow [2024-10-14 23:53:19,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 23:53:19,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 23:53:19,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 389 transitions. [2024-10-14 23:53:19,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5172872340425532 [2024-10-14 23:53:19,124 INFO L175 Difference]: Start difference. First operand has 183 places, 226 transitions, 3275 flow. Second operand 16 states and 389 transitions. [2024-10-14 23:53:19,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 361 transitions, 5184 flow [2024-10-14 23:53:19,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 361 transitions, 5030 flow, removed 39 selfloop flow, removed 12 redundant places. [2024-10-14 23:53:19,327 INFO L231 Difference]: Finished difference. Result has 192 places, 255 transitions, 4234 flow [2024-10-14 23:53:19,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4234, PETRI_PLACES=192, PETRI_TRANSITIONS=255} [2024-10-14 23:53:19,328 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 145 predicate places. [2024-10-14 23:53:19,328 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 255 transitions, 4234 flow [2024-10-14 23:53:19,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:19,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:19,328 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:19,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-14 23:53:19,328 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:19,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:19,329 INFO L85 PathProgramCache]: Analyzing trace with hash 830904273, now seen corresponding path program 1 times [2024-10-14 23:53:19,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:19,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328069015] [2024-10-14 23:53:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:19,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:19,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:19,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328069015] [2024-10-14 23:53:19,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328069015] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:19,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:19,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:53:19,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323430985] [2024-10-14 23:53:19,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:19,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:19,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:19,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:19,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:19,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-14 23:53:19,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 255 transitions, 4234 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:19,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:19,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-14 23:53:19,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:20,290 INFO L124 PetriNetUnfolderBase]: 1493/3367 cut-off events. [2024-10-14 23:53:20,291 INFO L125 PetriNetUnfolderBase]: For 49278/49300 co-relation queries the response was YES. [2024-10-14 23:53:20,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18233 conditions, 3367 events. 1493/3367 cut-off events. For 49278/49300 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 23846 event pairs, 523 based on Foata normal form. 25/3346 useless extension candidates. Maximal degree in co-relation 18048. Up to 2575 conditions per place. [2024-10-14 23:53:20,317 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 251 selfloop transitions, 56 changer transitions 0/319 dead transitions. [2024-10-14 23:53:20,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 319 transitions, 5529 flow [2024-10-14 23:53:20,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 23:53:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 23:53:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 331 transitions. [2024-10-14 23:53:20,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4695035460992908 [2024-10-14 23:53:20,318 INFO L175 Difference]: Start difference. First operand has 192 places, 255 transitions, 4234 flow. Second operand 15 states and 331 transitions. [2024-10-14 23:53:20,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 319 transitions, 5529 flow [2024-10-14 23:53:20,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 319 transitions, 5330 flow, removed 49 selfloop flow, removed 11 redundant places. [2024-10-14 23:53:20,463 INFO L231 Difference]: Finished difference. Result has 196 places, 255 transitions, 4184 flow [2024-10-14 23:53:20,464 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4044, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4184, PETRI_PLACES=196, PETRI_TRANSITIONS=255} [2024-10-14 23:53:20,464 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 149 predicate places. [2024-10-14 23:53:20,464 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 255 transitions, 4184 flow [2024-10-14 23:53:20,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:20,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:20,465 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:20,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-14 23:53:20,465 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:20,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:20,465 INFO L85 PathProgramCache]: Analyzing trace with hash 135307773, now seen corresponding path program 1 times [2024-10-14 23:53:20,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:20,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967262954] [2024-10-14 23:53:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:20,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:20,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:20,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967262954] [2024-10-14 23:53:20,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967262954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:20,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:20,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:53:20,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65226105] [2024-10-14 23:53:20,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:20,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:20,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:20,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:20,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:20,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-14 23:53:20,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 255 transitions, 4184 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:20,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:20,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-14 23:53:20,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:21,510 INFO L124 PetriNetUnfolderBase]: 1464/3358 cut-off events. [2024-10-14 23:53:21,510 INFO L125 PetriNetUnfolderBase]: For 47160/47182 co-relation queries the response was YES. [2024-10-14 23:53:21,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17782 conditions, 3358 events. 1464/3358 cut-off events. For 47160/47182 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 23979 event pairs, 506 based on Foata normal form. 34/3341 useless extension candidates. Maximal degree in co-relation 17597. Up to 2488 conditions per place. [2024-10-14 23:53:21,546 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 252 selfloop transitions, 60 changer transitions 0/324 dead transitions. [2024-10-14 23:53:21,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 324 transitions, 5380 flow [2024-10-14 23:53:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 23:53:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 23:53:21,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 290 transitions. [2024-10-14 23:53:21,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-10-14 23:53:21,547 INFO L175 Difference]: Start difference. First operand has 196 places, 255 transitions, 4184 flow. Second operand 12 states and 290 transitions. [2024-10-14 23:53:21,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 324 transitions, 5380 flow [2024-10-14 23:53:21,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 324 transitions, 5285 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-10-14 23:53:21,724 INFO L231 Difference]: Finished difference. Result has 195 places, 254 transitions, 4200 flow [2024-10-14 23:53:21,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4080, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4200, PETRI_PLACES=195, PETRI_TRANSITIONS=254} [2024-10-14 23:53:21,725 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 148 predicate places. [2024-10-14 23:53:21,725 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 254 transitions, 4200 flow [2024-10-14 23:53:21,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:21,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:21,726 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:21,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-14 23:53:21,726 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:21,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:21,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2058009937, now seen corresponding path program 2 times [2024-10-14 23:53:21,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:21,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543878094] [2024-10-14 23:53:21,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:21,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:21,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:21,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543878094] [2024-10-14 23:53:21,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543878094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:21,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:21,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:53:21,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995400924] [2024-10-14 23:53:21,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:21,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:21,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:21,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:21,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:21,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-14 23:53:21,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 254 transitions, 4200 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:21,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:21,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-14 23:53:21,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:22,633 INFO L124 PetriNetUnfolderBase]: 1443/3295 cut-off events. [2024-10-14 23:53:22,634 INFO L125 PetriNetUnfolderBase]: For 46719/46738 co-relation queries the response was YES. [2024-10-14 23:53:22,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17534 conditions, 3295 events. 1443/3295 cut-off events. For 46719/46738 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 23463 event pairs, 508 based on Foata normal form. 25/3276 useless extension candidates. Maximal degree in co-relation 17350. Up to 2447 conditions per place. [2024-10-14 23:53:22,660 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 228 selfloop transitions, 71 changer transitions 0/311 dead transitions. [2024-10-14 23:53:22,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 311 transitions, 5369 flow [2024-10-14 23:53:22,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 23:53:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 23:53:22,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 342 transitions. [2024-10-14 23:53:22,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45478723404255317 [2024-10-14 23:53:22,661 INFO L175 Difference]: Start difference. First operand has 195 places, 254 transitions, 4200 flow. Second operand 16 states and 342 transitions. [2024-10-14 23:53:22,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 311 transitions, 5369 flow [2024-10-14 23:53:22,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 311 transitions, 5265 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-10-14 23:53:22,793 INFO L231 Difference]: Finished difference. Result has 200 places, 253 transitions, 4232 flow [2024-10-14 23:53:22,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4090, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4232, PETRI_PLACES=200, PETRI_TRANSITIONS=253} [2024-10-14 23:53:22,794 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 153 predicate places. [2024-10-14 23:53:22,794 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 253 transitions, 4232 flow [2024-10-14 23:53:22,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:22,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:22,795 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:22,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-14 23:53:22,795 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:22,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:22,795 INFO L85 PathProgramCache]: Analyzing trace with hash -971435679, now seen corresponding path program 3 times [2024-10-14 23:53:22,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:22,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512929788] [2024-10-14 23:53:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:22,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:23,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:23,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512929788] [2024-10-14 23:53:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512929788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:23,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:23,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:53:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183491840] [2024-10-14 23:53:23,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:23,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:23,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:23,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:23,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:23,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-14 23:53:23,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 253 transitions, 4232 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:23,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:23,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-14 23:53:23,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:23,886 INFO L124 PetriNetUnfolderBase]: 1422/3259 cut-off events. [2024-10-14 23:53:23,886 INFO L125 PetriNetUnfolderBase]: For 46177/46193 co-relation queries the response was YES. [2024-10-14 23:53:23,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17356 conditions, 3259 events. 1422/3259 cut-off events. For 46177/46193 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23181 event pairs, 454 based on Foata normal form. 25/3241 useless extension candidates. Maximal degree in co-relation 17173. Up to 2326 conditions per place. [2024-10-14 23:53:23,910 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 234 selfloop transitions, 84 changer transitions 0/330 dead transitions. [2024-10-14 23:53:23,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 330 transitions, 5688 flow [2024-10-14 23:53:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 23:53:23,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 23:53:23,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 333 transitions. [2024-10-14 23:53:23,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4723404255319149 [2024-10-14 23:53:23,911 INFO L175 Difference]: Start difference. First operand has 200 places, 253 transitions, 4232 flow. Second operand 15 states and 333 transitions. [2024-10-14 23:53:23,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 330 transitions, 5688 flow [2024-10-14 23:53:24,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 330 transitions, 5572 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-10-14 23:53:24,040 INFO L231 Difference]: Finished difference. Result has 205 places, 265 transitions, 4570 flow [2024-10-14 23:53:24,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4116, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4570, PETRI_PLACES=205, PETRI_TRANSITIONS=265} [2024-10-14 23:53:24,041 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 158 predicate places. [2024-10-14 23:53:24,041 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 265 transitions, 4570 flow [2024-10-14 23:53:24,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:24,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:24,041 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:24,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-14 23:53:24,041 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:24,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:24,042 INFO L85 PathProgramCache]: Analyzing trace with hash 984827005, now seen corresponding path program 2 times [2024-10-14 23:53:24,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:24,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455379319] [2024-10-14 23:53:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:24,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:24,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:24,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455379319] [2024-10-14 23:53:24,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455379319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:24,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:24,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:53:24,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917318552] [2024-10-14 23:53:24,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:24,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:24,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:24,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:24,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:24,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-14 23:53:24,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 265 transitions, 4570 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:24,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:24,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-14 23:53:24,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:24,998 INFO L124 PetriNetUnfolderBase]: 1393/3246 cut-off events. [2024-10-14 23:53:24,998 INFO L125 PetriNetUnfolderBase]: For 48351/48370 co-relation queries the response was YES. [2024-10-14 23:53:25,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17598 conditions, 3246 events. 1393/3246 cut-off events. For 48351/48370 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 23229 event pairs, 476 based on Foata normal form. 30/3226 useless extension candidates. Maximal degree in co-relation 17411. Up to 2390 conditions per place. [2024-10-14 23:53:25,020 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 261 selfloop transitions, 61 changer transitions 0/334 dead transitions. [2024-10-14 23:53:25,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 334 transitions, 5796 flow [2024-10-14 23:53:25,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 23:53:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 23:53:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 342 transitions. [2024-10-14 23:53:25,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-10-14 23:53:25,021 INFO L175 Difference]: Start difference. First operand has 205 places, 265 transitions, 4570 flow. Second operand 15 states and 342 transitions. [2024-10-14 23:53:25,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 334 transitions, 5796 flow [2024-10-14 23:53:25,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 334 transitions, 5662 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-10-14 23:53:25,143 INFO L231 Difference]: Finished difference. Result has 208 places, 264 transitions, 4552 flow [2024-10-14 23:53:25,143 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4430, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4552, PETRI_PLACES=208, PETRI_TRANSITIONS=264} [2024-10-14 23:53:25,144 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 161 predicate places. [2024-10-14 23:53:25,144 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 264 transitions, 4552 flow [2024-10-14 23:53:25,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:25,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:25,145 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:25,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-14 23:53:25,145 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:25,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:25,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1923978745, now seen corresponding path program 3 times [2024-10-14 23:53:25,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:25,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195128069] [2024-10-14 23:53:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:25,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:25,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:25,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195128069] [2024-10-14 23:53:25,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195128069] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:25,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:25,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:53:25,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141436321] [2024-10-14 23:53:25,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:25,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:25,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:25,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:25,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:25,308 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-14 23:53:25,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 264 transitions, 4552 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:25,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:25,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-14 23:53:25,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:26,143 INFO L124 PetriNetUnfolderBase]: 1364/3224 cut-off events. [2024-10-14 23:53:26,144 INFO L125 PetriNetUnfolderBase]: For 48270/48298 co-relation queries the response was YES. [2024-10-14 23:53:26,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17313 conditions, 3224 events. 1364/3224 cut-off events. For 48270/48298 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 23225 event pairs, 432 based on Foata normal form. 38/3215 useless extension candidates. Maximal degree in co-relation 17127. Up to 2204 conditions per place. [2024-10-14 23:53:26,172 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 223 selfloop transitions, 92 changer transitions 0/327 dead transitions. [2024-10-14 23:53:26,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 327 transitions, 5677 flow [2024-10-14 23:53:26,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 23:53:26,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 23:53:26,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 353 transitions. [2024-10-14 23:53:26,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46941489361702127 [2024-10-14 23:53:26,178 INFO L175 Difference]: Start difference. First operand has 208 places, 264 transitions, 4552 flow. Second operand 16 states and 353 transitions. [2024-10-14 23:53:26,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 327 transitions, 5677 flow [2024-10-14 23:53:26,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 327 transitions, 5581 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-10-14 23:53:26,337 INFO L231 Difference]: Finished difference. Result has 211 places, 263 transitions, 4627 flow [2024-10-14 23:53:26,337 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4443, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4627, PETRI_PLACES=211, PETRI_TRANSITIONS=263} [2024-10-14 23:53:26,338 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 164 predicate places. [2024-10-14 23:53:26,338 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 263 transitions, 4627 flow [2024-10-14 23:53:26,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:26,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:26,339 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:26,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-14 23:53:26,339 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:26,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:26,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1679540615, now seen corresponding path program 4 times [2024-10-14 23:53:26,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:26,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437087677] [2024-10-14 23:53:26,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:26,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:26,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:26,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437087677] [2024-10-14 23:53:26,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437087677] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:26,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:26,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:53:26,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453855310] [2024-10-14 23:53:26,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:26,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:53:26,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:26,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:53:26,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:26,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-14 23:53:26,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 263 transitions, 4627 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:26,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:26,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-14 23:53:26,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:27,315 INFO L124 PetriNetUnfolderBase]: 1335/3147 cut-off events. [2024-10-14 23:53:27,315 INFO L125 PetriNetUnfolderBase]: For 48249/48278 co-relation queries the response was YES. [2024-10-14 23:53:27,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17152 conditions, 3147 events. 1335/3147 cut-off events. For 48249/48278 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 22555 event pairs, 349 based on Foata normal form. 40/3150 useless extension candidates. Maximal degree in co-relation 16966. Up to 2049 conditions per place. [2024-10-14 23:53:27,340 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 218 selfloop transitions, 107 changer transitions 0/337 dead transitions. [2024-10-14 23:53:27,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 337 transitions, 5863 flow [2024-10-14 23:53:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 23:53:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 23:53:27,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 347 transitions. [2024-10-14 23:53:27,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4921985815602837 [2024-10-14 23:53:27,344 INFO L175 Difference]: Start difference. First operand has 211 places, 263 transitions, 4627 flow. Second operand 15 states and 347 transitions. [2024-10-14 23:53:27,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 337 transitions, 5863 flow [2024-10-14 23:53:27,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 337 transitions, 5697 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-10-14 23:53:27,483 INFO L231 Difference]: Finished difference. Result has 216 places, 266 transitions, 4832 flow [2024-10-14 23:53:27,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4423, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4832, PETRI_PLACES=216, PETRI_TRANSITIONS=266} [2024-10-14 23:53:27,483 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 169 predicate places. [2024-10-14 23:53:27,484 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 266 transitions, 4832 flow [2024-10-14 23:53:27,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:27,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:27,484 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:27,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-14 23:53:27,484 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:27,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:27,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1839380383, now seen corresponding path program 1 times [2024-10-14 23:53:27,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:27,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681363612] [2024-10-14 23:53:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:27,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:27,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:27,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681363612] [2024-10-14 23:53:27,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681363612] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:27,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281890550] [2024-10-14 23:53:27,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:27,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:27,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:27,527 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:53:27,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 23:53:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:27,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:53:27,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:27,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:53:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:27,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281890550] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:53:27,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:53:27,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 23:53:27,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714373358] [2024-10-14 23:53:27,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:53:27,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:53:27,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:53:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:53:27,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:53:27,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 266 transitions, 4832 flow. Second operand has 10 states, 10 states have (on average 20.3) internal successors, (203), 10 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:27,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:27,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:53:27,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:28,325 INFO L124 PetriNetUnfolderBase]: 1365/3322 cut-off events. [2024-10-14 23:53:28,326 INFO L125 PetriNetUnfolderBase]: For 52816/53316 co-relation queries the response was YES. [2024-10-14 23:53:28,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18221 conditions, 3322 events. 1365/3322 cut-off events. For 52816/53316 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 22383 event pairs, 312 based on Foata normal form. 228/3520 useless extension candidates. Maximal degree in co-relation 18032. Up to 681 conditions per place. [2024-10-14 23:53:28,353 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 419 selfloop transitions, 14 changer transitions 0/449 dead transitions. [2024-10-14 23:53:28,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 449 transitions, 8090 flow [2024-10-14 23:53:28,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 23:53:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 23:53:28,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 265 transitions. [2024-10-14 23:53:28,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6264775413711584 [2024-10-14 23:53:28,354 INFO L175 Difference]: Start difference. First operand has 216 places, 266 transitions, 4832 flow. Second operand 9 states and 265 transitions. [2024-10-14 23:53:28,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 449 transitions, 8090 flow [2024-10-14 23:53:28,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 449 transitions, 7920 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-10-14 23:53:28,461 INFO L231 Difference]: Finished difference. Result has 215 places, 258 transitions, 4494 flow [2024-10-14 23:53:28,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4422, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4494, PETRI_PLACES=215, PETRI_TRANSITIONS=258} [2024-10-14 23:53:28,462 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 168 predicate places. [2024-10-14 23:53:28,462 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 258 transitions, 4494 flow [2024-10-14 23:53:28,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.3) internal successors, (203), 10 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:28,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:28,462 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:28,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 23:53:28,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-14 23:53:28,663 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:28,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:28,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1530145736, now seen corresponding path program 1 times [2024-10-14 23:53:28,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:28,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717363489] [2024-10-14 23:53:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:28,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:29,013 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:29,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:29,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717363489] [2024-10-14 23:53:29,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717363489] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:29,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890258184] [2024-10-14 23:53:29,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:29,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:29,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:29,019 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:53:29,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 23:53:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:29,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 23:53:29,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:29,116 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 [2024-10-14 23:53:29,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-10-14 23:53:30,962 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 21 treesize of output 15 [2024-10-14 23:53:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:31,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:53:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:35,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890258184] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:53:35,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:53:35,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 22 [2024-10-14 23:53:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345511843] [2024-10-14 23:53:35,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:53:35,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-14 23:53:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:35,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-14 23:53:35,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=416, Unknown=6, NotChecked=0, Total=552 [2024-10-14 23:53:36,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 23:53:40,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 23:53:40,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-14 23:53:40,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 258 transitions, 4494 flow. Second operand has 24 states, 24 states have (on average 15.5) internal successors, (372), 24 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:40,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:40,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-14 23:53:40,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:49,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 23:53:52,369 INFO L124 PetriNetUnfolderBase]: 1959/4540 cut-off events. [2024-10-14 23:53:52,370 INFO L125 PetriNetUnfolderBase]: For 66106/66289 co-relation queries the response was YES. [2024-10-14 23:53:52,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24667 conditions, 4540 events. 1959/4540 cut-off events. For 66106/66289 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 30696 event pairs, 644 based on Foata normal form. 208/4647 useless extension candidates. Maximal degree in co-relation 24477. Up to 2548 conditions per place. [2024-10-14 23:53:52,406 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 314 selfloop transitions, 167 changer transitions 0/493 dead transitions. [2024-10-14 23:53:52,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 493 transitions, 7981 flow [2024-10-14 23:53:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-14 23:53:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-14 23:53:52,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 551 transitions. [2024-10-14 23:53:52,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46893617021276596 [2024-10-14 23:53:52,408 INFO L175 Difference]: Start difference. First operand has 215 places, 258 transitions, 4494 flow. Second operand 25 states and 551 transitions. [2024-10-14 23:53:52,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 493 transitions, 7981 flow [2024-10-14 23:53:52,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 493 transitions, 7746 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-10-14 23:53:52,544 INFO L231 Difference]: Finished difference. Result has 243 places, 326 transitions, 6069 flow [2024-10-14 23:53:52,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4129, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6069, PETRI_PLACES=243, PETRI_TRANSITIONS=326} [2024-10-14 23:53:52,545 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 196 predicate places. [2024-10-14 23:53:52,545 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 326 transitions, 6069 flow [2024-10-14 23:53:52,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.5) internal successors, (372), 24 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:52,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:52,546 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:52,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 23:53:52,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:52,746 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:53:52,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:52,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1185225914, now seen corresponding path program 1 times [2024-10-14 23:53:52,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:52,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734276268] [2024-10-14 23:53:52,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:52,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:52,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:52,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734276268] [2024-10-14 23:53:52,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734276268] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:52,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049920978] [2024-10-14 23:53:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:52,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:52,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:52,982 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:53:52,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 23:53:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:53,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 23:53:53,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:53,075 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 [2024-10-14 23:53:53,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-10-14 23:53:55,169 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 21 treesize of output 15 [2024-10-14 23:53:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:55,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:54:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:54:01,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049920978] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:54:01,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:54:01,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 22 [2024-10-14 23:54:01,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529610838] [2024-10-14 23:54:01,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:54:01,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-14 23:54:01,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:54:01,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-14 23:54:01,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=415, Unknown=7, NotChecked=0, Total=552 [2024-10-14 23:54:04,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-14 23:54:04,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 326 transitions, 6069 flow. Second operand has 24 states, 24 states have (on average 15.5) internal successors, (372), 24 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:54:04,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:54:04,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-14 23:54:04,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:54:13,725 INFO L124 PetriNetUnfolderBase]: 2052/4532 cut-off events. [2024-10-14 23:54:13,725 INFO L125 PetriNetUnfolderBase]: For 72955/73372 co-relation queries the response was YES. [2024-10-14 23:54:13,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26611 conditions, 4532 events. 2052/4532 cut-off events. For 72955/73372 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 30405 event pairs, 662 based on Foata normal form. 283/4777 useless extension candidates. Maximal degree in co-relation 26413. Up to 2793 conditions per place. [2024-10-14 23:54:13,766 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 369 selfloop transitions, 208 changer transitions 0/590 dead transitions. [2024-10-14 23:54:13,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 590 transitions, 10973 flow [2024-10-14 23:54:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-14 23:54:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-14 23:54:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 537 transitions. [2024-10-14 23:54:13,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4570212765957447 [2024-10-14 23:54:13,768 INFO L175 Difference]: Start difference. First operand has 243 places, 326 transitions, 6069 flow. Second operand 25 states and 537 transitions. [2024-10-14 23:54:13,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 590 transitions, 10973 flow [2024-10-14 23:54:13,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 590 transitions, 9883 flow, removed 350 selfloop flow, removed 12 redundant places. [2024-10-14 23:54:13,929 INFO L231 Difference]: Finished difference. Result has 265 places, 425 transitions, 8109 flow [2024-10-14 23:54:13,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5108, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=8109, PETRI_PLACES=265, PETRI_TRANSITIONS=425} [2024-10-14 23:54:13,929 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 218 predicate places. [2024-10-14 23:54:13,930 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 425 transitions, 8109 flow [2024-10-14 23:54:13,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.5) internal successors, (372), 24 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:54:13,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:54:13,930 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:54:13,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 23:54:14,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:54:14,135 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:54:14,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:54:14,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2083402850, now seen corresponding path program 1 times [2024-10-14 23:54:14,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:54:14,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676018915] [2024-10-14 23:54:14,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:54:14,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:54:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:54:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:54:14,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:54:14,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676018915] [2024-10-14 23:54:14,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676018915] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:54:14,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136554715] [2024-10-14 23:54:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:54:14,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:54:14,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:54:14,191 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:54:14,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 23:54:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:54:14,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:54:14,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:54:14,311 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:54:14,312 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:54:14,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136554715] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:54:14,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:54:14,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-14 23:54:14,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361381718] [2024-10-14 23:54:14,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:54:14,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:54:14,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:54:14,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:54:14,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:54:14,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:54:14,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 425 transitions, 8109 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:54:14,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:54:14,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:54:14,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:54:15,184 INFO L124 PetriNetUnfolderBase]: 1493/3573 cut-off events. [2024-10-14 23:54:15,185 INFO L125 PetriNetUnfolderBase]: For 57167/57386 co-relation queries the response was YES. [2024-10-14 23:54:15,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21523 conditions, 3573 events. 1493/3573 cut-off events. For 57167/57386 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 24333 event pairs, 339 based on Foata normal form. 181/3735 useless extension candidates. Maximal degree in co-relation 21320. Up to 1232 conditions per place. [2024-10-14 23:54:15,220 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 507 selfloop transitions, 17 changer transitions 0/545 dead transitions. [2024-10-14 23:54:15,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 545 transitions, 10446 flow [2024-10-14 23:54:15,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:54:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:54:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-10-14 23:54:15,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6914893617021277 [2024-10-14 23:54:15,222 INFO L175 Difference]: Start difference. First operand has 265 places, 425 transitions, 8109 flow. Second operand 6 states and 195 transitions. [2024-10-14 23:54:15,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 545 transitions, 10446 flow [2024-10-14 23:54:15,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 545 transitions, 9506 flow, removed 367 selfloop flow, removed 8 redundant places. [2024-10-14 23:54:15,392 INFO L231 Difference]: Finished difference. Result has 261 places, 424 transitions, 7311 flow [2024-10-14 23:54:15,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7277, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7311, PETRI_PLACES=261, PETRI_TRANSITIONS=424} [2024-10-14 23:54:15,393 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 214 predicate places. [2024-10-14 23:54:15,393 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 424 transitions, 7311 flow [2024-10-14 23:54:15,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:54:15,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:54:15,393 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:54:15,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 23:54:15,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:54:15,598 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:54:15,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:54:15,598 INFO L85 PathProgramCache]: Analyzing trace with hash 139343276, now seen corresponding path program 1 times [2024-10-14 23:54:15,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:54:15,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870097263] [2024-10-14 23:54:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:54:15,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:54:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:54:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:54:15,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:54:15,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870097263] [2024-10-14 23:54:15,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870097263] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:54:15,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003933033] [2024-10-14 23:54:15,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:54:15,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:54:15,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:54:15,662 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:54:15,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 23:54:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:54:15,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:54:15,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:54:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:54:15,784 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:54:15,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003933033] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:54:15,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:54:15,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-14 23:54:15,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960524899] [2024-10-14 23:54:15,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:54:15,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:54:15,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:54:15,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:54:15,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:54:15,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:54:15,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 424 transitions, 7311 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:54:15,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:54:15,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:54:15,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:54:16,653 INFO L124 PetriNetUnfolderBase]: 1474/3513 cut-off events. [2024-10-14 23:54:16,654 INFO L125 PetriNetUnfolderBase]: For 49562/49930 co-relation queries the response was YES. [2024-10-14 23:54:16,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20368 conditions, 3513 events. 1474/3513 cut-off events. For 49562/49930 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 23463 event pairs, 294 based on Foata normal form. 253/3737 useless extension candidates. Maximal degree in co-relation 20167. Up to 1573 conditions per place. [2024-10-14 23:54:16,679 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 501 selfloop transitions, 19 changer transitions 0/539 dead transitions. [2024-10-14 23:54:16,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 539 transitions, 9874 flow [2024-10-14 23:54:16,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:54:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:54:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-10-14 23:54:16,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6205673758865248 [2024-10-14 23:54:16,680 INFO L175 Difference]: Start difference. First operand has 261 places, 424 transitions, 7311 flow. Second operand 6 states and 175 transitions. [2024-10-14 23:54:16,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 539 transitions, 9874 flow [2024-10-14 23:54:16,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 539 transitions, 9789 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:54:16,821 INFO L231 Difference]: Finished difference. Result has 260 places, 422 transitions, 7317 flow [2024-10-14 23:54:16,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7279, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7317, PETRI_PLACES=260, PETRI_TRANSITIONS=422} [2024-10-14 23:54:16,822 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 213 predicate places. [2024-10-14 23:54:16,822 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 422 transitions, 7317 flow [2024-10-14 23:54:16,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:54:16,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:54:16,822 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 23:54:16,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 23:54:17,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-14 23:54:17,023 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:54:17,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:54:17,024 INFO L85 PathProgramCache]: Analyzing trace with hash -160978597, now seen corresponding path program 1 times [2024-10-14 23:54:17,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:54:17,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443654978] [2024-10-14 23:54:17,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:54:17,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:54:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:54:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-14 23:54:17,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:54:17,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443654978] [2024-10-14 23:54:17,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443654978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:54:17,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:54:17,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:54:17,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751636952] [2024-10-14 23:54:17,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:54:17,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:54:17,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:54:17,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:54:17,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:54:17,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 23:54:17,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 422 transitions, 7317 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:54:17,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:54:17,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 23:54:17,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:54:17,762 INFO L124 PetriNetUnfolderBase]: 1439/3485 cut-off events. [2024-10-14 23:54:17,763 INFO L125 PetriNetUnfolderBase]: For 48841/49066 co-relation queries the response was YES. [2024-10-14 23:54:17,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20379 conditions, 3485 events. 1439/3485 cut-off events. For 48841/49066 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 23664 event pairs, 419 based on Foata normal form. 161/3625 useless extension candidates. Maximal degree in co-relation 20178. Up to 2096 conditions per place. [2024-10-14 23:54:17,801 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 465 selfloop transitions, 21 changer transitions 0/505 dead transitions. [2024-10-14 23:54:17,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 505 transitions, 9229 flow [2024-10-14 23:54:17,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:54:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:54:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-10-14 23:54:17,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2024-10-14 23:54:17,802 INFO L175 Difference]: Start difference. First operand has 260 places, 422 transitions, 7317 flow. Second operand 4 states and 126 transitions. [2024-10-14 23:54:17,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 505 transitions, 9229 flow [2024-10-14 23:54:17,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 505 transitions, 9136 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-10-14 23:54:17,990 INFO L231 Difference]: Finished difference. Result has 258 places, 422 transitions, 7331 flow [2024-10-14 23:54:17,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7271, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=7331, PETRI_PLACES=258, PETRI_TRANSITIONS=422} [2024-10-14 23:54:17,991 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 211 predicate places. [2024-10-14 23:54:17,991 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 422 transitions, 7331 flow [2024-10-14 23:54:17,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:54:17,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:54:17,991 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:54:17,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-14 23:54:17,991 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:54:17,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:54:17,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1604864296, now seen corresponding path program 1 times [2024-10-14 23:54:17,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:54:17,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990427908] [2024-10-14 23:54:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:54:17,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:54:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:54:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:54:18,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:54:18,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990427908] [2024-10-14 23:54:18,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990427908] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:54:18,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762355559] [2024-10-14 23:54:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:54:18,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:54:18,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:54:18,507 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:54:18,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 23:54:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:54:18,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-14 23:54:18,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:54:18,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-14 23:54:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-10-14 23:54:18,772 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:54:18,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762355559] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:54:18,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:54:18,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 19 [2024-10-14 23:54:18,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951395366] [2024-10-14 23:54:18,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:54:18,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:54:18,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:54:18,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:54:18,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-10-14 23:54:18,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-14 23:54:18,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 422 transitions, 7331 flow. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:54:18,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:54:18,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-14 23:54:18,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:54:19,753 INFO L124 PetriNetUnfolderBase]: 1564/3733 cut-off events. [2024-10-14 23:54:19,754 INFO L125 PetriNetUnfolderBase]: For 51915/52195 co-relation queries the response was YES. [2024-10-14 23:54:19,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22104 conditions, 3733 events. 1564/3733 cut-off events. For 51915/52195 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 25869 event pairs, 404 based on Foata normal form. 160/3859 useless extension candidates. Maximal degree in co-relation 21905. Up to 1850 conditions per place. [2024-10-14 23:54:19,794 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 563 selfloop transitions, 26 changer transitions 0/608 dead transitions. [2024-10-14 23:54:19,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 608 transitions, 10970 flow [2024-10-14 23:54:19,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 23:54:19,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 23:54:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-10-14 23:54:19,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.598404255319149 [2024-10-14 23:54:19,795 INFO L175 Difference]: Start difference. First operand has 258 places, 422 transitions, 7331 flow. Second operand 8 states and 225 transitions. [2024-10-14 23:54:19,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 608 transitions, 10970 flow [2024-10-14 23:54:19,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 608 transitions, 10854 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:54:19,974 INFO L231 Difference]: Finished difference. Result has 268 places, 434 transitions, 7477 flow [2024-10-14 23:54:19,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7299, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7477, PETRI_PLACES=268, PETRI_TRANSITIONS=434} [2024-10-14 23:54:19,974 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 221 predicate places. [2024-10-14 23:54:19,975 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 434 transitions, 7477 flow [2024-10-14 23:54:19,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:54:19,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:54:19,975 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:54:19,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-14 23:54:20,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-14 23:54:20,180 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:54:20,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:54:20,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1618849188, now seen corresponding path program 1 times [2024-10-14 23:54:20,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:54:20,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067731666] [2024-10-14 23:54:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:54:20,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:54:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:54:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:54:20,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:54:20,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067731666] [2024-10-14 23:54:20,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067731666] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:54:20,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646406080] [2024-10-14 23:54:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:54:20,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:54:20,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:54:20,643 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:54:20,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 23:54:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:54:20,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-14 23:54:20,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:54:20,755 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 [2024-10-14 23:54:20,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2024-10-14 23:54:21,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 32 [2024-10-14 23:54:21,256 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 40 treesize of output 30 [2024-10-14 23:54:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:54:21,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:54:27,620 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:54:27,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646406080] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:54:27,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:54:27,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 33 [2024-10-14 23:54:27,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914829589] [2024-10-14 23:54:27,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:54:27,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-14 23:54:27,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:54:27,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-14 23:54:27,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1031, Unknown=1, NotChecked=0, Total=1190 [2024-10-14 23:54:27,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-10-14 23:54:27,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 434 transitions, 7477 flow. Second operand has 35 states, 35 states have (on average 13.028571428571428) internal successors, (456), 35 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:54:27,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:54:27,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-10-14 23:54:27,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand