./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 21:53:41,691 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 21:53:41,782 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 21:53:41,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 21:53:41,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 21:53:41,818 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 21:53:41,819 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 21:53:41,819 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 21:53:41,820 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 21:53:41,821 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 21:53:41,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 21:53:41,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 21:53:41,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 21:53:41,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 21:53:41,825 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 21:53:41,825 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 21:53:41,825 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 21:53:41,825 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 21:53:41,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 21:53:41,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 21:53:41,826 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 21:53:41,827 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 21:53:41,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 21:53:41,827 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 21:53:41,828 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 21:53:41,828 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 21:53:41,828 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 21:53:41,828 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 21:53:41,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 21:53:41,829 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 21:53:41,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 21:53:41,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 21:53:41,830 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 21:53:41,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 21:53:41,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:53:41,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 21:53:41,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 21:53:41,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 21:53:41,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 21:53:41,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 21:53:41,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 21:53:41,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 21:53:41,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 21:53:41,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 21:53:41,834 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb [2024-11-20 21:53:42,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 21:53:42,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 21:53:42,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 21:53:42,139 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 21:53:42,140 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 21:53:42,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2024-11-20 21:53:43,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 21:53:43,801 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 21:53:43,801 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2024-11-20 21:53:43,819 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a6a61735/adf5178391ef43b8ad75abe8feb4a1d7/FLAG19edd6cb7 [2024-11-20 21:53:43,832 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a6a61735/adf5178391ef43b8ad75abe8feb4a1d7 [2024-11-20 21:53:43,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 21:53:43,836 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 21:53:43,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 21:53:43,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 21:53:43,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 21:53:43,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18394a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:43, skipping insertion in model container [2024-11-20 21:53:43,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:53:43" (1/1) ... [2024-11-20 21:53:43,889 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 21:53:44,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:53:44,369 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 21:53:44,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:53:44,485 INFO L204 MainTranslator]: Completed translation [2024-11-20 21:53:44,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:44 WrapperNode [2024-11-20 21:53:44,485 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 21:53:44,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 21:53:44,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 21:53:44,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 21:53:44,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:44" (1/1) ... [2024-11-20 21:53:44,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:44" (1/1) ... [2024-11-20 21:53:44,555 INFO L138 Inliner]: procedures = 265, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 138 [2024-11-20 21:53:44,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 21:53:44,556 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 21:53:44,556 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 21:53:44,556 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 21:53:44,571 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:44" (1/1) ... [2024-11-20 21:53:44,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:44" (1/1) ... [2024-11-20 21:53:44,578 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:44" (1/1) ... [2024-11-20 21:53:44,598 INFO L175 MemorySlicer]: Split 64 memory accesses to 1 slices as follows [64]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 2 writes are split as follows [2]. [2024-11-20 21:53:44,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:44" (1/1) ... [2024-11-20 21:53:44,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:44" (1/1) ... [2024-11-20 21:53:44,614 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:44" (1/1) ... [2024-11-20 21:53:44,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:44" (1/1) ... [2024-11-20 21:53:44,620 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:44" (1/1) ... [2024-11-20 21:53:44,623 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:44" (1/1) ... [2024-11-20 21:53:44,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 21:53:44,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 21:53:44,626 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 21:53:44,626 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 21:53:44,627 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:44" (1/1) ... [2024-11-20 21:53:44,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:53:44,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:53:44,657 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) [2024-11-20 21:53:44,659 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 [2024-11-20 21:53:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 21:53:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 21:53:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 21:53:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 21:53:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 21:53:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-20 21:53:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-20 21:53:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 21:53:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 21:53:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 21:53:44,709 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 21:53:44,839 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 21:53:44,842 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 21:53:45,133 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 21:53:45,133 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 21:53:45,534 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 21:53:45,534 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-20 21:53:45,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:53:45 BoogieIcfgContainer [2024-11-20 21:53:45,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 21:53:45,537 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 21:53:45,537 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 21:53:45,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 21:53:45,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:53:43" (1/3) ... [2024-11-20 21:53:45,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a35682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:53:45, skipping insertion in model container [2024-11-20 21:53:45,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:44" (2/3) ... [2024-11-20 21:53:45,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a35682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:53:45, skipping insertion in model container [2024-11-20 21:53:45,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:53:45" (3/3) ... [2024-11-20 21:53:45,543 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2024-11-20 21:53:45,562 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 21:53:45,563 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-20 21:53:45,564 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 21:53:45,605 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 21:53:45,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 66 flow [2024-11-20 21:53:45,672 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2024-11-20 21:53:45,674 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:53:45,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 1/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2024-11-20 21:53:45,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 31 transitions, 66 flow [2024-11-20 21:53:45,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 30 transitions, 63 flow [2024-11-20 21:53:45,693 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:53:45,701 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;@502455e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:53:45,702 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-20 21:53:45,706 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 21:53:45,707 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-20 21:53:45,707 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:53:45,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:45,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 21:53:45,709 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:53:45,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:45,715 INFO L85 PathProgramCache]: Analyzing trace with hash 352943, now seen corresponding path program 1 times [2024-11-20 21:53:45,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:45,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668212191] [2024-11-20 21:53:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:45,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:46,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:46,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668212191] [2024-11-20 21:53:46,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668212191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:46,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:46,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:53:46,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411640153] [2024-11-20 21:53:46,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:46,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:53:46,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:46,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:53:46,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:53:46,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-20 21:53:46,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:46,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:46,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-20 21:53:46,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:46,324 INFO L124 PetriNetUnfolderBase]: 43/147 cut-off events. [2024-11-20 21:53:46,325 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:53:46,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 147 events. 43/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 548 event pairs, 42 based on Foata normal form. 1/131 useless extension candidates. Maximal degree in co-relation 233. Up to 105 conditions per place. [2024-11-20 21:53:46,329 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 19 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-11-20 21:53:46,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 111 flow [2024-11-20 21:53:46,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:53:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:53:46,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-11-20 21:53:46,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-11-20 21:53:46,344 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 63 flow. Second operand 4 states and 69 transitions. [2024-11-20 21:53:46,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 111 flow [2024-11-20 21:53:46,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:53:46,350 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2024-11-20 21:53:46,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-11-20 21:53:46,355 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-11-20 21:53:46,357 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2024-11-20 21:53:46,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:46,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:46,358 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-20 21:53:46,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 21:53:46,359 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:53:46,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:46,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1924949030, now seen corresponding path program 1 times [2024-11-20 21:53:46,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:46,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037763065] [2024-11-20 21:53:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:46,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:46,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:46,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037763065] [2024-11-20 21:53:46,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037763065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:53:46,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081888490] [2024-11-20 21:53:46,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:46,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:53:46,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:53:46,485 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) [2024-11-20 21:53:46,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 21:53:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:46,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 21:53:46,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:53:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:46,638 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 21:53:46,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081888490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:46,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 21:53:46,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-20 21:53:46,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553906049] [2024-11-20 21:53:46,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:46,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 21:53:46,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:46,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 21:53:46,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 21:53:46,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-20 21:53:46,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:46,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:46,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-20 21:53:46,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:46,775 INFO L124 PetriNetUnfolderBase]: 43/146 cut-off events. [2024-11-20 21:53:46,776 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 21:53:46,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 146 events. 43/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 547 event pairs, 42 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 250. Up to 100 conditions per place. [2024-11-20 21:53:46,779 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 15 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2024-11-20 21:53:46,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 124 flow [2024-11-20 21:53:46,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 21:53:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 21:53:46,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-11-20 21:53:46,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-11-20 21:53:46,782 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 6 states and 88 transitions. [2024-11-20 21:53:46,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 124 flow [2024-11-20 21:53:46,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:53:46,784 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 92 flow [2024-11-20 21:53:46,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2024-11-20 21:53:46,785 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-11-20 21:53:46,785 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 92 flow [2024-11-20 21:53:46,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:46,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:46,786 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-20 21:53:46,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 21:53:46,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:53:46,990 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:53:46,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:46,991 INFO L85 PathProgramCache]: Analyzing trace with hash -456121852, now seen corresponding path program 1 times [2024-11-20 21:53:46,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:46,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537327785] [2024-11-20 21:53:46,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:46,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:53:47,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:47,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537327785] [2024-11-20 21:53:47,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537327785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:47,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:47,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:53:47,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861989573] [2024-11-20 21:53:47,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:47,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 21:53:47,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:47,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 21:53:47,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 21:53:47,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-20 21:53:47,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:47,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:47,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-20 21:53:47,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:47,101 INFO L124 PetriNetUnfolderBase]: 43/145 cut-off events. [2024-11-20 21:53:47,101 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-20 21:53:47,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 145 events. 43/145 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 548 event pairs, 42 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 246. Up to 103 conditions per place. [2024-11-20 21:53:47,103 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 16 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-11-20 21:53:47,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 30 transitions, 128 flow [2024-11-20 21:53:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 21:53:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 21:53:47,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-20 21:53:47,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2024-11-20 21:53:47,105 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 92 flow. Second operand 3 states and 52 transitions. [2024-11-20 21:53:47,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 30 transitions, 128 flow [2024-11-20 21:53:47,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 106 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-20 21:53:47,106 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 74 flow [2024-11-20 21:53:47,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-11-20 21:53:47,107 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-11-20 21:53:47,107 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 74 flow [2024-11-20 21:53:47,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:47,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:47,108 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:47,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 21:53:47,108 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:53:47,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:47,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1008739826, now seen corresponding path program 1 times [2024-11-20 21:53:47,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:47,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744425696] [2024-11-20 21:53:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:47,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:47,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:47,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744425696] [2024-11-20 21:53:47,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744425696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:53:47,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259334745] [2024-11-20 21:53:47,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:47,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:53:47,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:53:47,212 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) [2024-11-20 21:53:47,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 21:53:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:47,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 21:53:47,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:53:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:47,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:53:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:47,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259334745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:53:47,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:53:47,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-20 21:53:47,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702926954] [2024-11-20 21:53:47,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:53:47,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 21:53:47,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:47,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 21:53:47,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 21:53:47,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-20 21:53:47,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 74 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:47,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:47,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-20 21:53:47,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:47,549 INFO L124 PetriNetUnfolderBase]: 43/149 cut-off events. [2024-11-20 21:53:47,550 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-20 21:53:47,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 149 events. 43/149 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 545 event pairs, 42 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 239. Up to 101 conditions per place. [2024-11-20 21:53:47,552 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 16 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2024-11-20 21:53:47,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 135 flow [2024-11-20 21:53:47,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 21:53:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 21:53:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-11-20 21:53:47,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4700460829493088 [2024-11-20 21:53:47,554 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 74 flow. Second operand 7 states and 102 transitions. [2024-11-20 21:53:47,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 135 flow [2024-11-20 21:53:47,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 121 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 21:53:47,556 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 100 flow [2024-11-20 21:53:47,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-11-20 21:53:47,557 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2024-11-20 21:53:47,557 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 100 flow [2024-11-20 21:53:47,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:47,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:47,557 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:47,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 21:53:47,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-20 21:53:47,758 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:53:47,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:47,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1654998702, now seen corresponding path program 2 times [2024-11-20 21:53:47,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:47,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484228556] [2024-11-20 21:53:47,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:47,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:47,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:47,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484228556] [2024-11-20 21:53:47,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484228556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:53:47,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683857160] [2024-11-20 21:53:47,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 21:53:47,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:53:47,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:53:47,899 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) [2024-11-20 21:53:47,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 21:53:47,970 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 21:53:47,970 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 21:53:47,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-20 21:53:47,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:53:48,617 INFO L349 Elim1Store]: treesize reduction 78, result has 3.7 percent of original size [2024-11-20 21:53:48,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 80 treesize of output 37 [2024-11-20 21:53:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 21:53:48,635 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 21:53:48,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683857160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:48,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 21:53:48,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2024-11-20 21:53:48,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930041040] [2024-11-20 21:53:48,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:48,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 21:53:48,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:48,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 21:53:48,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-20 21:53:48,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-20 21:53:48,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:48,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:48,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-20 21:53:48,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:48,780 INFO L124 PetriNetUnfolderBase]: 57/164 cut-off events. [2024-11-20 21:53:48,781 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-20 21:53:48,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 164 events. 57/164 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 564 event pairs, 18 based on Foata normal form. 8/155 useless extension candidates. Maximal degree in co-relation 284. Up to 74 conditions per place. [2024-11-20 21:53:48,783 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 34 selfloop transitions, 7 changer transitions 3/52 dead transitions. [2024-11-20 21:53:48,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 226 flow [2024-11-20 21:53:48,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 21:53:48,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 21:53:48,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-11-20 21:53:48,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2024-11-20 21:53:48,784 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 100 flow. Second operand 6 states and 107 transitions. [2024-11-20 21:53:48,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 226 flow [2024-11-20 21:53:48,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 21:53:48,786 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 136 flow [2024-11-20 21:53:48,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2024-11-20 21:53:48,787 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2024-11-20 21:53:48,789 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 136 flow [2024-11-20 21:53:48,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:48,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:48,790 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:48,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 21:53:48,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:53:48,994 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:53:48,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:48,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1654610680, now seen corresponding path program 1 times [2024-11-20 21:53:48,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:48,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144115861] [2024-11-20 21:53:48,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:48,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 21:53:49,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:49,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144115861] [2024-11-20 21:53:49,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144115861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:49,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:49,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:53:49,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172280920] [2024-11-20 21:53:49,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:49,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:53:49,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:49,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:53:49,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:53:49,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-20 21:53:49,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:49,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:49,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-20 21:53:49,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:49,140 INFO L124 PetriNetUnfolderBase]: 39/146 cut-off events. [2024-11-20 21:53:49,141 INFO L125 PetriNetUnfolderBase]: For 75/78 co-relation queries the response was YES. [2024-11-20 21:53:49,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 146 events. 39/146 cut-off events. For 75/78 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 571 event pairs, 2 based on Foata normal form. 7/139 useless extension candidates. Maximal degree in co-relation 291. Up to 62 conditions per place. [2024-11-20 21:53:49,142 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 35 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2024-11-20 21:53:49,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 250 flow [2024-11-20 21:53:49,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:53:49,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:53:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-11-20 21:53:49,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2024-11-20 21:53:49,144 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 136 flow. Second operand 4 states and 76 transitions. [2024-11-20 21:53:49,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 250 flow [2024-11-20 21:53:49,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:53:49,147 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 138 flow [2024-11-20 21:53:49,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2024-11-20 21:53:49,147 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2024-11-20 21:53:49,148 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 138 flow [2024-11-20 21:53:49,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:49,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:49,148 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:49,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 21:53:49,149 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:53:49,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:49,149 INFO L85 PathProgramCache]: Analyzing trace with hash 234648148, now seen corresponding path program 1 times [2024-11-20 21:53:49,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:49,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049244595] [2024-11-20 21:53:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:49,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:49,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:49,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049244595] [2024-11-20 21:53:49,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049244595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:53:49,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116020427] [2024-11-20 21:53:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:49,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:53:49,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:53:49,273 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) [2024-11-20 21:53:49,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 21:53:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:49,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 21:53:49,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:53:49,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:49,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:53:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:49,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116020427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:53:49,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:53:49,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-20 21:53:49,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965381013] [2024-11-20 21:53:49,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:53:49,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 21:53:49,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:49,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 21:53:49,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-20 21:53:49,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-20 21:53:49,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 138 flow. Second operand has 18 states, 18 states have (on average 12.277777777777779) internal successors, (221), 18 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:49,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:49,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-20 21:53:49,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:49,642 INFO L124 PetriNetUnfolderBase]: 33/146 cut-off events. [2024-11-20 21:53:49,642 INFO L125 PetriNetUnfolderBase]: For 94/95 co-relation queries the response was YES. [2024-11-20 21:53:49,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 146 events. 33/146 cut-off events. For 94/95 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 484 event pairs, 32 based on Foata normal form. 4/144 useless extension candidates. Maximal degree in co-relation 320. Up to 85 conditions per place. [2024-11-20 21:53:49,644 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 18 selfloop transitions, 15 changer transitions 0/43 dead transitions. [2024-11-20 21:53:49,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 43 transitions, 252 flow [2024-11-20 21:53:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 21:53:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-20 21:53:49,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 200 transitions. [2024-11-20 21:53:49,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-11-20 21:53:49,648 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 138 flow. Second operand 15 states and 200 transitions. [2024-11-20 21:53:49,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 43 transitions, 252 flow [2024-11-20 21:53:49,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 43 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 21:53:49,652 INFO L231 Difference]: Finished difference. Result has 64 places, 43 transitions, 229 flow [2024-11-20 21:53:49,653 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=229, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2024-11-20 21:53:49,654 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2024-11-20 21:53:49,655 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 229 flow [2024-11-20 21:53:49,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.277777777777779) internal successors, (221), 18 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:49,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:49,656 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:49,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 21:53:49,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:53:49,857 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:53:49,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:49,857 INFO L85 PathProgramCache]: Analyzing trace with hash -206619756, now seen corresponding path program 2 times [2024-11-20 21:53:49,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:49,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079166884] [2024-11-20 21:53:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:49,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:50,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:50,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079166884] [2024-11-20 21:53:50,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079166884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:53:50,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045670271] [2024-11-20 21:53:50,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 21:53:50,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:53:50,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:53:50,105 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) [2024-11-20 21:53:50,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 21:53:50,174 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 21:53:50,174 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 21:53:50,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-20 21:53:50,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:53:51,015 INFO L349 Elim1Store]: treesize reduction 78, result has 3.7 percent of original size [2024-11-20 21:53:51,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 80 treesize of output 37 [2024-11-20 21:53:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-20 21:53:51,042 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 21:53:51,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045670271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:51,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 21:53:51,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 19 [2024-11-20 21:53:51,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228947357] [2024-11-20 21:53:51,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:51,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 21:53:51,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:51,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 21:53:51,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-11-20 21:53:51,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-20 21:53:51,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:51,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:51,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-20 21:53:51,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:51,211 INFO L124 PetriNetUnfolderBase]: 37/139 cut-off events. [2024-11-20 21:53:51,211 INFO L125 PetriNetUnfolderBase]: For 132/134 co-relation queries the response was YES. [2024-11-20 21:53:51,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 139 events. 37/139 cut-off events. For 132/134 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 406 event pairs, 12 based on Foata normal form. 10/146 useless extension candidates. Maximal degree in co-relation 309. Up to 53 conditions per place. [2024-11-20 21:53:51,213 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 40 selfloop transitions, 6 changer transitions 1/54 dead transitions. [2024-11-20 21:53:51,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 54 transitions, 343 flow [2024-11-20 21:53:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 21:53:51,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 21:53:51,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-11-20 21:53:51,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-20 21:53:51,215 INFO L175 Difference]: Start difference. First operand has 64 places, 43 transitions, 229 flow. Second operand 6 states and 102 transitions. [2024-11-20 21:53:51,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 54 transitions, 343 flow [2024-11-20 21:53:51,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 54 transitions, 329 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-20 21:53:51,219 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 217 flow [2024-11-20 21:53:51,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2024-11-20 21:53:51,220 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2024-11-20 21:53:51,220 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 217 flow [2024-11-20 21:53:51,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:51,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:51,221 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:51,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 21:53:51,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:53:51,426 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:53:51,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:51,427 INFO L85 PathProgramCache]: Analyzing trace with hash -194591059, now seen corresponding path program 1 times [2024-11-20 21:53:51,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:51,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549067078] [2024-11-20 21:53:51,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:51,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-20 21:53:51,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:51,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549067078] [2024-11-20 21:53:51,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549067078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:51,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:51,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:53:51,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642916776] [2024-11-20 21:53:51,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:51,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:53:51,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:51,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:53:51,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:53:51,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-20 21:53:51,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:51,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:51,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-20 21:53:51,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:51,571 INFO L124 PetriNetUnfolderBase]: 33/130 cut-off events. [2024-11-20 21:53:51,571 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-11-20 21:53:51,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 130 events. 33/130 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 366 event pairs, 14 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 316. Up to 58 conditions per place. [2024-11-20 21:53:51,572 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 41 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2024-11-20 21:53:51,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 52 transitions, 349 flow [2024-11-20 21:53:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:53:51,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:53:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-11-20 21:53:51,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6048387096774194 [2024-11-20 21:53:51,574 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 217 flow. Second operand 4 states and 75 transitions. [2024-11-20 21:53:51,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 52 transitions, 349 flow [2024-11-20 21:53:51,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 52 transitions, 325 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-20 21:53:51,576 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 207 flow [2024-11-20 21:53:51,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2024-11-20 21:53:51,577 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2024-11-20 21:53:51,577 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 207 flow [2024-11-20 21:53:51,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:51,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:51,578 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:51,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 21:53:51,578 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:53:51,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1737355158, now seen corresponding path program 1 times [2024-11-20 21:53:51,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:51,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745313815] [2024-11-20 21:53:51,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:51,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:51,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:51,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745313815] [2024-11-20 21:53:51,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745313815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:53:51,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387007610] [2024-11-20 21:53:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:51,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:53:51,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:53:51,828 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) [2024-11-20 21:53:51,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 21:53:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:51,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 21:53:51,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:53:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:51,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:53:52,141 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:52,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387007610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:53:52,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:53:52,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-20 21:53:52,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001682702] [2024-11-20 21:53:52,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:53:52,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-20 21:53:52,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:52,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-20 21:53:52,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-20 21:53:52,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-20 21:53:52,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 207 flow. Second operand has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:52,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:52,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-20 21:53:52,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:52,357 INFO L124 PetriNetUnfolderBase]: 33/144 cut-off events. [2024-11-20 21:53:52,357 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-11-20 21:53:52,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 144 events. 33/144 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 405 event pairs, 32 based on Foata normal form. 3/141 useless extension candidates. Maximal degree in co-relation 260. Up to 82 conditions per place. [2024-11-20 21:53:52,358 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 17 selfloop transitions, 21 changer transitions 0/46 dead transitions. [2024-11-20 21:53:52,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 46 transitions, 337 flow [2024-11-20 21:53:52,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 21:53:52,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-20 21:53:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 271 transitions. [2024-11-20 21:53:52,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4162826420890937 [2024-11-20 21:53:52,360 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 207 flow. Second operand 21 states and 271 transitions. [2024-11-20 21:53:52,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 46 transitions, 337 flow [2024-11-20 21:53:52,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 46 transitions, 331 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 21:53:52,363 INFO L231 Difference]: Finished difference. Result has 81 places, 46 transitions, 312 flow [2024-11-20 21:53:52,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=312, PETRI_PLACES=81, PETRI_TRANSITIONS=46} [2024-11-20 21:53:52,364 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 48 predicate places. [2024-11-20 21:53:52,364 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 46 transitions, 312 flow [2024-11-20 21:53:52,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:52,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:52,364 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:52,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 21:53:52,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:53:52,566 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:53:52,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:52,566 INFO L85 PathProgramCache]: Analyzing trace with hash 817003827, now seen corresponding path program 2 times [2024-11-20 21:53:52,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:52,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303788616] [2024-11-20 21:53:52,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:52,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:53:53,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:53,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303788616] [2024-11-20 21:53:53,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303788616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:53,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:53,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:53:53,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148073949] [2024-11-20 21:53:53,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:53,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 21:53:53,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:53,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 21:53:53,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 21:53:53,532 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-20 21:53:53,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 46 transitions, 312 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:53,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:53,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-20 21:53:53,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:53,691 INFO L124 PetriNetUnfolderBase]: 36/145 cut-off events. [2024-11-20 21:53:53,692 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-11-20 21:53:53,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 145 events. 36/145 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 382 event pairs, 8 based on Foata normal form. 14/159 useless extension candidates. Maximal degree in co-relation 255. Up to 57 conditions per place. [2024-11-20 21:53:53,693 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 46 selfloop transitions, 6 changer transitions 4/62 dead transitions. [2024-11-20 21:53:53,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 62 transitions, 468 flow [2024-11-20 21:53:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 21:53:53,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 21:53:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-11-20 21:53:53,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2024-11-20 21:53:53,694 INFO L175 Difference]: Start difference. First operand has 81 places, 46 transitions, 312 flow. Second operand 6 states and 107 transitions. [2024-11-20 21:53:53,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 62 transitions, 468 flow [2024-11-20 21:53:53,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 62 transitions, 425 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-20 21:53:53,697 INFO L231 Difference]: Finished difference. Result has 77 places, 49 transitions, 310 flow [2024-11-20 21:53:53,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=77, PETRI_TRANSITIONS=49} [2024-11-20 21:53:53,698 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 44 predicate places. [2024-11-20 21:53:53,698 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 49 transitions, 310 flow [2024-11-20 21:53:53,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:53,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:53,699 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:53,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 21:53:53,699 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:53:53,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:53,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1805311792, now seen corresponding path program 1 times [2024-11-20 21:53:53,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:53,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476592097] [2024-11-20 21:53:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:53,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:53:59,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476592097] [2024-11-20 21:53:59,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476592097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:59,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:59,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 21:53:59,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359986849] [2024-11-20 21:53:59,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:59,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 21:53:59,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:59,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 21:53:59,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-20 21:53:59,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-20 21:53:59,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 49 transitions, 310 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:59,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:59,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-20 21:53:59,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:01,486 INFO L124 PetriNetUnfolderBase]: 71/217 cut-off events. [2024-11-20 21:54:01,487 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2024-11-20 21:54:01,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 217 events. 71/217 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 719 event pairs, 12 based on Foata normal form. 3/220 useless extension candidates. Maximal degree in co-relation 594. Up to 45 conditions per place. [2024-11-20 21:54:01,489 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 21 changer transitions 6/96 dead transitions. [2024-11-20 21:54:01,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 96 transitions, 661 flow [2024-11-20 21:54:01,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 21:54:01,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-20 21:54:01,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 188 transitions. [2024-11-20 21:54:01,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-11-20 21:54:01,493 INFO L175 Difference]: Start difference. First operand has 77 places, 49 transitions, 310 flow. Second operand 16 states and 188 transitions. [2024-11-20 21:54:01,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 96 transitions, 661 flow [2024-11-20 21:54:01,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 96 transitions, 646 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-20 21:54:01,498 INFO L231 Difference]: Finished difference. Result has 95 places, 64 transitions, 450 flow [2024-11-20 21:54:01,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=450, PETRI_PLACES=95, PETRI_TRANSITIONS=64} [2024-11-20 21:54:01,500 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 62 predicate places. [2024-11-20 21:54:01,500 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 64 transitions, 450 flow [2024-11-20 21:54:01,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:01,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:01,501 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:01,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 21:54:01,502 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:01,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash 693868688, now seen corresponding path program 2 times [2024-11-20 21:54:01,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:01,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291629345] [2024-11-20 21:54:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:01,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:54:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:54:04,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:54:04,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291629345] [2024-11-20 21:54:04,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291629345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:54:04,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:54:04,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 21:54:04,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109429873] [2024-11-20 21:54:04,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:54:04,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 21:54:04,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:54:04,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 21:54:04,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-20 21:54:04,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-20 21:54:04,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 64 transitions, 450 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:04,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:54:04,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-20 21:54:04,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:05,259 INFO L124 PetriNetUnfolderBase]: 80/249 cut-off events. [2024-11-20 21:54:05,259 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2024-11-20 21:54:05,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 249 events. 80/249 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 934 event pairs, 16 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 770. Up to 63 conditions per place. [2024-11-20 21:54:05,261 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 66 selfloop transitions, 21 changer transitions 5/94 dead transitions. [2024-11-20 21:54:05,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 94 transitions, 767 flow [2024-11-20 21:54:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 21:54:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 21:54:05,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-11-20 21:54:05,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-11-20 21:54:05,264 INFO L175 Difference]: Start difference. First operand has 95 places, 64 transitions, 450 flow. Second operand 10 states and 129 transitions. [2024-11-20 21:54:05,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 94 transitions, 767 flow [2024-11-20 21:54:05,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 94 transitions, 740 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-20 21:54:05,269 INFO L231 Difference]: Finished difference. Result has 105 places, 69 transitions, 549 flow [2024-11-20 21:54:05,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=549, PETRI_PLACES=105, PETRI_TRANSITIONS=69} [2024-11-20 21:54:05,270 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 72 predicate places. [2024-11-20 21:54:05,270 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 69 transitions, 549 flow [2024-11-20 21:54:05,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:05,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:05,271 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:05,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 21:54:05,271 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:05,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:05,271 INFO L85 PathProgramCache]: Analyzing trace with hash -17257223, now seen corresponding path program 1 times [2024-11-20 21:54:05,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:05,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394255963] [2024-11-20 21:54:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:05,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:54:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:54:08,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:54:08,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394255963] [2024-11-20 21:54:08,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394255963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:54:08,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:54:08,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 21:54:08,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044225550] [2024-11-20 21:54:08,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:54:08,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 21:54:08,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:54:08,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 21:54:08,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 21:54:08,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-20 21:54:08,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 69 transitions, 549 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:08,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:54:08,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-20 21:54:08,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:09,978 INFO L124 PetriNetUnfolderBase]: 77/256 cut-off events. [2024-11-20 21:54:09,978 INFO L125 PetriNetUnfolderBase]: For 609/611 co-relation queries the response was YES. [2024-11-20 21:54:09,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 952 conditions, 256 events. 77/256 cut-off events. For 609/611 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1030 event pairs, 24 based on Foata normal form. 5/260 useless extension candidates. Maximal degree in co-relation 855. Up to 125 conditions per place. [2024-11-20 21:54:09,981 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 60 selfloop transitions, 33 changer transitions 7/105 dead transitions. [2024-11-20 21:54:09,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 105 transitions, 912 flow [2024-11-20 21:54:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-20 21:54:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-20 21:54:09,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 213 transitions. [2024-11-20 21:54:09,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-11-20 21:54:09,982 INFO L175 Difference]: Start difference. First operand has 105 places, 69 transitions, 549 flow. Second operand 18 states and 213 transitions. [2024-11-20 21:54:09,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 105 transitions, 912 flow [2024-11-20 21:54:09,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 105 transitions, 889 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-20 21:54:09,991 INFO L231 Difference]: Finished difference. Result has 123 places, 83 transitions, 709 flow [2024-11-20 21:54:09,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=709, PETRI_PLACES=123, PETRI_TRANSITIONS=83} [2024-11-20 21:54:09,993 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 90 predicate places. [2024-11-20 21:54:09,993 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 83 transitions, 709 flow [2024-11-20 21:54:09,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:09,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:09,994 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:09,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 21:54:09,994 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:09,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:09,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1751079297, now seen corresponding path program 2 times [2024-11-20 21:54:09,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:09,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129662839] [2024-11-20 21:54:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:09,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:54:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:54:12,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:54:12,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129662839] [2024-11-20 21:54:12,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129662839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:54:12,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:54:12,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 21:54:12,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430367005] [2024-11-20 21:54:12,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:54:12,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 21:54:12,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:54:12,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 21:54:12,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-20 21:54:12,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-20 21:54:12,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 83 transitions, 709 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:12,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:54:12,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-20 21:54:12,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:13,635 INFO L124 PetriNetUnfolderBase]: 87/279 cut-off events. [2024-11-20 21:54:13,635 INFO L125 PetriNetUnfolderBase]: For 776/778 co-relation queries the response was YES. [2024-11-20 21:54:13,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 279 events. 87/279 cut-off events. For 776/778 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1153 event pairs, 28 based on Foata normal form. 3/282 useless extension candidates. Maximal degree in co-relation 1021. Up to 133 conditions per place. [2024-11-20 21:54:13,640 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 70 selfloop transitions, 31 changer transitions 5/108 dead transitions. [2024-11-20 21:54:13,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 108 transitions, 1055 flow [2024-11-20 21:54:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 21:54:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-20 21:54:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 177 transitions. [2024-11-20 21:54:13,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35685483870967744 [2024-11-20 21:54:13,641 INFO L175 Difference]: Start difference. First operand has 123 places, 83 transitions, 709 flow. Second operand 16 states and 177 transitions. [2024-11-20 21:54:13,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 108 transitions, 1055 flow [2024-11-20 21:54:13,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 108 transitions, 1000 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-20 21:54:13,649 INFO L231 Difference]: Finished difference. Result has 137 places, 88 transitions, 824 flow [2024-11-20 21:54:13,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=824, PETRI_PLACES=137, PETRI_TRANSITIONS=88} [2024-11-20 21:54:13,650 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 104 predicate places. [2024-11-20 21:54:13,651 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 88 transitions, 824 flow [2024-11-20 21:54:13,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:13,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:13,651 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:13,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 21:54:13,652 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:13,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:13,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1717117557, now seen corresponding path program 3 times [2024-11-20 21:54:13,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:13,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492223676] [2024-11-20 21:54:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:13,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:54:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:54:16,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:54:16,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492223676] [2024-11-20 21:54:16,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492223676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:54:16,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:54:16,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 21:54:16,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503845100] [2024-11-20 21:54:16,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:54:16,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 21:54:16,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:54:16,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 21:54:16,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-20 21:54:16,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-20 21:54:16,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 88 transitions, 824 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:16,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:54:16,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-20 21:54:16,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:17,400 INFO L124 PetriNetUnfolderBase]: 90/289 cut-off events. [2024-11-20 21:54:17,400 INFO L125 PetriNetUnfolderBase]: For 902/904 co-relation queries the response was YES. [2024-11-20 21:54:17,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 289 events. 90/289 cut-off events. For 902/904 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1234 event pairs, 28 based on Foata normal form. 5/294 useless extension candidates. Maximal degree in co-relation 1122. Up to 132 conditions per place. [2024-11-20 21:54:17,403 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 69 selfloop transitions, 37 changer transitions 1/109 dead transitions. [2024-11-20 21:54:17,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 109 transitions, 1134 flow [2024-11-20 21:54:17,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 21:54:17,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-20 21:54:17,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 173 transitions. [2024-11-20 21:54:17,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3720430107526882 [2024-11-20 21:54:17,408 INFO L175 Difference]: Start difference. First operand has 137 places, 88 transitions, 824 flow. Second operand 15 states and 173 transitions. [2024-11-20 21:54:17,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 109 transitions, 1134 flow [2024-11-20 21:54:17,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 109 transitions, 1084 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-11-20 21:54:17,418 INFO L231 Difference]: Finished difference. Result has 147 places, 92 transitions, 925 flow [2024-11-20 21:54:17,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=925, PETRI_PLACES=147, PETRI_TRANSITIONS=92} [2024-11-20 21:54:17,419 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 114 predicate places. [2024-11-20 21:54:17,419 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 92 transitions, 925 flow [2024-11-20 21:54:17,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:17,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:17,420 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:17,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 21:54:17,420 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:17,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1752232497, now seen corresponding path program 4 times [2024-11-20 21:54:17,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:17,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118583299] [2024-11-20 21:54:17,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:17,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:54:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:54:19,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:54:19,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118583299] [2024-11-20 21:54:19,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118583299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:54:19,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:54:19,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 21:54:19,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435335699] [2024-11-20 21:54:19,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:54:19,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 21:54:19,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:54:19,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 21:54:19,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-20 21:54:19,917 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-20 21:54:19,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 92 transitions, 925 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:19,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:54:19,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-20 21:54:19,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:20,770 INFO L124 PetriNetUnfolderBase]: 95/307 cut-off events. [2024-11-20 21:54:20,770 INFO L125 PetriNetUnfolderBase]: For 1120/1122 co-relation queries the response was YES. [2024-11-20 21:54:20,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1346 conditions, 307 events. 95/307 cut-off events. For 1120/1122 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1370 event pairs, 25 based on Foata normal form. 3/310 useless extension candidates. Maximal degree in co-relation 1225. Up to 135 conditions per place. [2024-11-20 21:54:20,773 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 79 selfloop transitions, 39 changer transitions 1/121 dead transitions. [2024-11-20 21:54:20,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 121 transitions, 1324 flow [2024-11-20 21:54:20,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 21:54:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-20 21:54:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 172 transitions. [2024-11-20 21:54:20,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36989247311827955 [2024-11-20 21:54:20,775 INFO L175 Difference]: Start difference. First operand has 147 places, 92 transitions, 925 flow. Second operand 15 states and 172 transitions. [2024-11-20 21:54:20,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 121 transitions, 1324 flow [2024-11-20 21:54:20,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 121 transitions, 1244 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-11-20 21:54:20,785 INFO L231 Difference]: Finished difference. Result has 155 places, 100 transitions, 1015 flow [2024-11-20 21:54:20,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1015, PETRI_PLACES=155, PETRI_TRANSITIONS=100} [2024-11-20 21:54:20,788 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 122 predicate places. [2024-11-20 21:54:20,788 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 100 transitions, 1015 flow [2024-11-20 21:54:20,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:20,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:20,789 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:20,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 21:54:20,790 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:20,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:20,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1884953700, now seen corresponding path program 3 times [2024-11-20 21:54:20,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:20,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791465742] [2024-11-20 21:54:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:20,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:54:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:54:24,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:54:24,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791465742] [2024-11-20 21:54:24,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791465742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:54:24,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:54:24,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 21:54:24,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88854528] [2024-11-20 21:54:24,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:54:24,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 21:54:24,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:54:24,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 21:54:24,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-20 21:54:24,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-20 21:54:24,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 100 transitions, 1015 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:24,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:54:24,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-20 21:54:24,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:25,376 INFO L124 PetriNetUnfolderBase]: 104/337 cut-off events. [2024-11-20 21:54:25,377 INFO L125 PetriNetUnfolderBase]: For 1137/1139 co-relation queries the response was YES. [2024-11-20 21:54:25,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1503 conditions, 337 events. 104/337 cut-off events. For 1137/1139 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1589 event pairs, 34 based on Foata normal form. 5/342 useless extension candidates. Maximal degree in co-relation 1369. Up to 148 conditions per place. [2024-11-20 21:54:25,381 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 87 selfloop transitions, 34 changer transitions 3/126 dead transitions. [2024-11-20 21:54:25,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 126 transitions, 1394 flow [2024-11-20 21:54:25,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 21:54:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-20 21:54:25,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 179 transitions. [2024-11-20 21:54:25,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36088709677419356 [2024-11-20 21:54:25,383 INFO L175 Difference]: Start difference. First operand has 155 places, 100 transitions, 1015 flow. Second operand 16 states and 179 transitions. [2024-11-20 21:54:25,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 126 transitions, 1394 flow [2024-11-20 21:54:25,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 126 transitions, 1330 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-20 21:54:25,393 INFO L231 Difference]: Finished difference. Result has 166 places, 104 transitions, 1097 flow [2024-11-20 21:54:25,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1097, PETRI_PLACES=166, PETRI_TRANSITIONS=104} [2024-11-20 21:54:25,393 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 133 predicate places. [2024-11-20 21:54:25,394 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 104 transitions, 1097 flow [2024-11-20 21:54:25,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:25,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:25,394 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:25,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-20 21:54:25,394 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:25,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:25,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1583180631, now seen corresponding path program 5 times [2024-11-20 21:54:25,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:25,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520223127] [2024-11-20 21:54:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:25,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:54:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:54:28,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:54:28,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520223127] [2024-11-20 21:54:28,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520223127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:54:28,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:54:28,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 21:54:28,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758612787] [2024-11-20 21:54:28,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:54:28,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 21:54:28,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:54:28,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 21:54:28,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-20 21:54:28,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-20 21:54:28,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 104 transitions, 1097 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:28,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:54:28,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-20 21:54:28,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:30,286 INFO L124 PetriNetUnfolderBase]: 95/333 cut-off events. [2024-11-20 21:54:30,286 INFO L125 PetriNetUnfolderBase]: For 1449/1451 co-relation queries the response was YES. [2024-11-20 21:54:30,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 333 events. 95/333 cut-off events. For 1449/1451 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1618 event pairs, 48 based on Foata normal form. 5/337 useless extension candidates. Maximal degree in co-relation 1404. Up to 179 conditions per place. [2024-11-20 21:54:30,289 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 74 selfloop transitions, 36 changer transitions 2/124 dead transitions. [2024-11-20 21:54:30,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 124 transitions, 1418 flow [2024-11-20 21:54:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 21:54:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-20 21:54:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 190 transitions. [2024-11-20 21:54:30,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-11-20 21:54:30,291 INFO L175 Difference]: Start difference. First operand has 166 places, 104 transitions, 1097 flow. Second operand 16 states and 190 transitions. [2024-11-20 21:54:30,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 124 transitions, 1418 flow [2024-11-20 21:54:30,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 124 transitions, 1335 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-11-20 21:54:30,302 INFO L231 Difference]: Finished difference. Result has 174 places, 108 transitions, 1151 flow [2024-11-20 21:54:30,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1151, PETRI_PLACES=174, PETRI_TRANSITIONS=108} [2024-11-20 21:54:30,303 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 141 predicate places. [2024-11-20 21:54:30,303 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 108 transitions, 1151 flow [2024-11-20 21:54:30,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:30,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:30,304 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:30,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-20 21:54:30,304 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:30,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:30,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1836837104, now seen corresponding path program 4 times [2024-11-20 21:54:30,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:30,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566363259] [2024-11-20 21:54:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:30,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:54:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:54:31,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:54:31,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566363259] [2024-11-20 21:54:31,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566363259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:54:31,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:54:31,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 21:54:31,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296238692] [2024-11-20 21:54:31,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:54:31,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 21:54:31,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:54:31,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 21:54:31,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-20 21:54:31,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-20 21:54:31,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 108 transitions, 1151 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:31,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:54:31,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-20 21:54:31,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:32,374 INFO L124 PetriNetUnfolderBase]: 106/353 cut-off events. [2024-11-20 21:54:32,374 INFO L125 PetriNetUnfolderBase]: For 1477/1479 co-relation queries the response was YES. [2024-11-20 21:54:32,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639 conditions, 353 events. 106/353 cut-off events. For 1477/1479 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1733 event pairs, 32 based on Foata normal form. 5/358 useless extension candidates. Maximal degree in co-relation 1502. Up to 146 conditions per place. [2024-11-20 21:54:32,378 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 44 changer transitions 1/141 dead transitions. [2024-11-20 21:54:32,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 141 transitions, 1600 flow [2024-11-20 21:54:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 21:54:32,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-20 21:54:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 189 transitions. [2024-11-20 21:54:32,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3586337760910816 [2024-11-20 21:54:32,380 INFO L175 Difference]: Start difference. First operand has 174 places, 108 transitions, 1151 flow. Second operand 17 states and 189 transitions. [2024-11-20 21:54:32,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 141 transitions, 1600 flow [2024-11-20 21:54:32,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 141 transitions, 1552 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-20 21:54:32,394 INFO L231 Difference]: Finished difference. Result has 189 places, 119 transitions, 1293 flow [2024-11-20 21:54:32,394 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1293, PETRI_PLACES=189, PETRI_TRANSITIONS=119} [2024-11-20 21:54:32,394 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 156 predicate places. [2024-11-20 21:54:32,394 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 119 transitions, 1293 flow [2024-11-20 21:54:32,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:32,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:32,395 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:32,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-20 21:54:32,395 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:32,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:32,396 INFO L85 PathProgramCache]: Analyzing trace with hash 290446421, now seen corresponding path program 1 times [2024-11-20 21:54:32,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:32,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919067411] [2024-11-20 21:54:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:32,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:54:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:54:35,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:54:35,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919067411] [2024-11-20 21:54:35,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919067411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:54:35,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:54:35,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 21:54:35,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690664554] [2024-11-20 21:54:35,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:54:35,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 21:54:35,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:54:35,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 21:54:35,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-20 21:54:35,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-20 21:54:35,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 119 transitions, 1293 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:35,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:54:35,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-20 21:54:35,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:36,876 INFO L124 PetriNetUnfolderBase]: 98/382 cut-off events. [2024-11-20 21:54:36,877 INFO L125 PetriNetUnfolderBase]: For 2200/2202 co-relation queries the response was YES. [2024-11-20 21:54:36,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1867 conditions, 382 events. 98/382 cut-off events. For 2200/2202 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2139 event pairs, 38 based on Foata normal form. 6/387 useless extension candidates. Maximal degree in co-relation 1733. Up to 198 conditions per place. [2024-11-20 21:54:36,882 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 76 selfloop transitions, 20 changer transitions 23/140 dead transitions. [2024-11-20 21:54:36,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 140 transitions, 1723 flow [2024-11-20 21:54:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 21:54:36,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 21:54:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-11-20 21:54:36,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-11-20 21:54:36,883 INFO L175 Difference]: Start difference. First operand has 189 places, 119 transitions, 1293 flow. Second operand 10 states and 138 transitions. [2024-11-20 21:54:36,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 140 transitions, 1723 flow [2024-11-20 21:54:36,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 140 transitions, 1634 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-11-20 21:54:36,900 INFO L231 Difference]: Finished difference. Result has 191 places, 112 transitions, 1177 flow [2024-11-20 21:54:36,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1177, PETRI_PLACES=191, PETRI_TRANSITIONS=112} [2024-11-20 21:54:36,902 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 158 predicate places. [2024-11-20 21:54:36,903 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 112 transitions, 1177 flow [2024-11-20 21:54:36,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:36,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:36,903 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:36,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-20 21:54:36,903 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:36,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1820669901, now seen corresponding path program 1 times [2024-11-20 21:54:36,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:36,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168919016] [2024-11-20 21:54:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:36,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:54:39,809 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:54:39,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:54:39,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168919016] [2024-11-20 21:54:39,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168919016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:54:39,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:54:39,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 21:54:39,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759769103] [2024-11-20 21:54:39,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:54:39,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 21:54:39,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:54:39,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 21:54:39,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-20 21:54:39,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-20 21:54:39,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 112 transitions, 1177 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:39,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:54:39,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-20 21:54:39,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:40,891 INFO L124 PetriNetUnfolderBase]: 76/314 cut-off events. [2024-11-20 21:54:40,891 INFO L125 PetriNetUnfolderBase]: For 1739/1742 co-relation queries the response was YES. [2024-11-20 21:54:40,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 314 events. 76/314 cut-off events. For 1739/1742 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1609 event pairs, 33 based on Foata normal form. 6/320 useless extension candidates. Maximal degree in co-relation 1366. Up to 187 conditions per place. [2024-11-20 21:54:40,895 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 66 selfloop transitions, 23 changer transitions 13/122 dead transitions. [2024-11-20 21:54:40,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 122 transitions, 1402 flow [2024-11-20 21:54:40,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 21:54:40,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 21:54:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-11-20 21:54:40,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4119106699751861 [2024-11-20 21:54:40,897 INFO L175 Difference]: Start difference. First operand has 191 places, 112 transitions, 1177 flow. Second operand 13 states and 166 transitions. [2024-11-20 21:54:40,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 122 transitions, 1402 flow [2024-11-20 21:54:40,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 122 transitions, 1337 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-11-20 21:54:40,909 INFO L231 Difference]: Finished difference. Result has 189 places, 104 transitions, 1065 flow [2024-11-20 21:54:40,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1065, PETRI_PLACES=189, PETRI_TRANSITIONS=104} [2024-11-20 21:54:40,910 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 156 predicate places. [2024-11-20 21:54:40,910 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 104 transitions, 1065 flow [2024-11-20 21:54:40,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:40,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:40,910 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:40,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-20 21:54:40,911 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:40,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:40,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1514154283, now seen corresponding path program 1 times [2024-11-20 21:54:40,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:40,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277000996] [2024-11-20 21:54:40,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:40,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:54:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:54:43,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:54:43,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277000996] [2024-11-20 21:54:43,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277000996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:54:43,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:54:43,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 21:54:43,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122264602] [2024-11-20 21:54:43,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:54:43,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 21:54:43,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:54:43,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 21:54:43,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-20 21:54:43,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-20 21:54:43,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 104 transitions, 1065 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:43,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:54:43,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-20 21:54:43,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:44,134 INFO L124 PetriNetUnfolderBase]: 87/309 cut-off events. [2024-11-20 21:54:44,134 INFO L125 PetriNetUnfolderBase]: For 1217/1217 co-relation queries the response was YES. [2024-11-20 21:54:44,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 309 events. 87/309 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1509 event pairs, 4 based on Foata normal form. 2/311 useless extension candidates. Maximal degree in co-relation 1314. Up to 78 conditions per place. [2024-11-20 21:54:44,137 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 98 selfloop transitions, 26 changer transitions 0/126 dead transitions. [2024-11-20 21:54:44,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 126 transitions, 1455 flow [2024-11-20 21:54:44,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 21:54:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 21:54:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-11-20 21:54:44,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-11-20 21:54:44,139 INFO L175 Difference]: Start difference. First operand has 189 places, 104 transitions, 1065 flow. Second operand 11 states and 128 transitions. [2024-11-20 21:54:44,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 126 transitions, 1455 flow [2024-11-20 21:54:44,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 126 transitions, 1380 flow, removed 2 selfloop flow, removed 18 redundant places. [2024-11-20 21:54:44,149 INFO L231 Difference]: Finished difference. Result has 171 places, 103 transitions, 1030 flow [2024-11-20 21:54:44,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1030, PETRI_PLACES=171, PETRI_TRANSITIONS=103} [2024-11-20 21:54:44,149 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 138 predicate places. [2024-11-20 21:54:44,150 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 103 transitions, 1030 flow [2024-11-20 21:54:44,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:44,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:44,150 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:44,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-20 21:54:44,150 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:44,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:44,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1515367083, now seen corresponding path program 2 times [2024-11-20 21:54:44,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:44,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632822447] [2024-11-20 21:54:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:44,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:54:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:54:46,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:54:46,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632822447] [2024-11-20 21:54:46,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632822447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:54:46,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:54:46,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 21:54:46,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235146738] [2024-11-20 21:54:46,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:54:46,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 21:54:46,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:54:46,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 21:54:46,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-20 21:54:47,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-20 21:54:47,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 103 transitions, 1030 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:47,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:54:47,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-20 21:54:47,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:47,961 INFO L124 PetriNetUnfolderBase]: 68/287 cut-off events. [2024-11-20 21:54:47,961 INFO L125 PetriNetUnfolderBase]: For 1249/1250 co-relation queries the response was YES. [2024-11-20 21:54:47,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 287 events. 68/287 cut-off events. For 1249/1250 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1443 event pairs, 26 based on Foata normal form. 4/288 useless extension candidates. Maximal degree in co-relation 1180. Up to 159 conditions per place. [2024-11-20 21:54:47,963 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 67 selfloop transitions, 25 changer transitions 7/118 dead transitions. [2024-11-20 21:54:47,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 118 transitions, 1286 flow [2024-11-20 21:54:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 21:54:47,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 21:54:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-11-20 21:54:47,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40694789081885857 [2024-11-20 21:54:47,965 INFO L175 Difference]: Start difference. First operand has 171 places, 103 transitions, 1030 flow. Second operand 13 states and 164 transitions. [2024-11-20 21:54:47,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 118 transitions, 1286 flow [2024-11-20 21:54:47,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 118 transitions, 1240 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-20 21:54:47,972 INFO L231 Difference]: Finished difference. Result has 175 places, 99 transitions, 1007 flow [2024-11-20 21:54:47,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1007, PETRI_PLACES=175, PETRI_TRANSITIONS=99} [2024-11-20 21:54:47,973 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 142 predicate places. [2024-11-20 21:54:47,973 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 99 transitions, 1007 flow [2024-11-20 21:54:47,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:47,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:47,974 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:47,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-20 21:54:47,974 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:47,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:47,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1551116283, now seen corresponding path program 3 times [2024-11-20 21:54:47,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:47,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633224966] [2024-11-20 21:54:47,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:47,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:54:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:54:51,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:54:51,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633224966] [2024-11-20 21:54:51,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633224966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:54:51,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:54:51,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 21:54:51,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603720183] [2024-11-20 21:54:51,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:54:51,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 21:54:51,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:54:51,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 21:54:51,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-20 21:54:51,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-20 21:54:51,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 99 transitions, 1007 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:51,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:54:51,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-20 21:54:51,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:52,531 INFO L124 PetriNetUnfolderBase]: 62/266 cut-off events. [2024-11-20 21:54:52,531 INFO L125 PetriNetUnfolderBase]: For 1257/1258 co-relation queries the response was YES. [2024-11-20 21:54:52,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 266 events. 62/266 cut-off events. For 1257/1258 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1264 event pairs, 22 based on Foata normal form. 7/273 useless extension candidates. Maximal degree in co-relation 1164. Up to 143 conditions per place. [2024-11-20 21:54:52,533 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 21 changer transitions 16/110 dead transitions. [2024-11-20 21:54:52,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 110 transitions, 1226 flow [2024-11-20 21:54:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 21:54:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 21:54:52,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-11-20 21:54:52,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39950372208436724 [2024-11-20 21:54:52,534 INFO L175 Difference]: Start difference. First operand has 175 places, 99 transitions, 1007 flow. Second operand 13 states and 161 transitions. [2024-11-20 21:54:52,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 110 transitions, 1226 flow [2024-11-20 21:54:52,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 110 transitions, 1156 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-11-20 21:54:52,542 INFO L231 Difference]: Finished difference. Result has 171 places, 88 transitions, 861 flow [2024-11-20 21:54:52,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=861, PETRI_PLACES=171, PETRI_TRANSITIONS=88} [2024-11-20 21:54:52,543 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 138 predicate places. [2024-11-20 21:54:52,543 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 88 transitions, 861 flow [2024-11-20 21:54:52,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:52,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:52,544 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:52,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-20 21:54:52,544 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:52,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:52,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1833959663, now seen corresponding path program 4 times [2024-11-20 21:54:52,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:52,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450964253] [2024-11-20 21:54:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:52,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:54:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 21:54:55,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:54:55,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450964253] [2024-11-20 21:54:55,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450964253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:54:55,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:54:55,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 21:54:55,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855444824] [2024-11-20 21:54:55,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:54:55,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 21:54:55,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:54:55,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 21:54:55,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-20 21:54:55,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-20 21:54:55,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 88 transitions, 861 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:55,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:54:55,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-20 21:54:55,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:54:56,346 INFO L124 PetriNetUnfolderBase]: 54/234 cut-off events. [2024-11-20 21:54:56,346 INFO L125 PetriNetUnfolderBase]: For 1064/1065 co-relation queries the response was YES. [2024-11-20 21:54:56,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 234 events. 54/234 cut-off events. For 1064/1065 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1019 event pairs, 25 based on Foata normal form. 4/238 useless extension candidates. Maximal degree in co-relation 986. Up to 129 conditions per place. [2024-11-20 21:54:56,348 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 55 selfloop transitions, 15 changer transitions 13/95 dead transitions. [2024-11-20 21:54:56,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 95 transitions, 1036 flow [2024-11-20 21:54:56,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 21:54:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 21:54:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-11-20 21:54:56,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39950372208436724 [2024-11-20 21:54:56,350 INFO L175 Difference]: Start difference. First operand has 171 places, 88 transitions, 861 flow. Second operand 13 states and 161 transitions. [2024-11-20 21:54:56,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 95 transitions, 1036 flow [2024-11-20 21:54:56,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 95 transitions, 927 flow, removed 4 selfloop flow, removed 20 redundant places. [2024-11-20 21:54:56,359 INFO L231 Difference]: Finished difference. Result has 153 places, 79 transitions, 701 flow [2024-11-20 21:54:56,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=701, PETRI_PLACES=153, PETRI_TRANSITIONS=79} [2024-11-20 21:54:56,360 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 120 predicate places. [2024-11-20 21:54:56,360 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 79 transitions, 701 flow [2024-11-20 21:54:56,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:54:56,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:54:56,360 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:54:56,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-20 21:54:56,361 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:54:56,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:54:56,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1802576001, now seen corresponding path program 2 times [2024-11-20 21:54:56,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:54:56,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057747284] [2024-11-20 21:54:56,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:54:56,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:54:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat