./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -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 1ac00c9540bbc99a446c9cb6c02e180c3a0ad4fef3c182d14bafdc7ea871c54c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:00:41,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:00:41,995 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:00:42,003 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:00:42,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:00:42,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:00:42,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:00:42,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:00:42,024 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:00:42,024 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:00:42,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:00:42,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:00:42,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:00:42,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:00:42,025 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:00:42,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:00:42,026 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:00:42,026 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:00:42,026 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:00:42,026 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:00:42,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:00:42,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:00:42,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:00:42,030 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:00:42,030 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:00:42,031 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:00:42,033 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:00:42,033 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:00:42,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:00:42,034 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:00:42,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:00:42,034 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:00:42,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:00:42,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:00:42,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:00:42,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:00:42,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:00:42,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:00:42,035 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:00:42,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:00:42,035 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:00:42,036 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:00:42,037 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:00:42,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:00:42,037 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ac00c9540bbc99a446c9cb6c02e180c3a0ad4fef3c182d14bafdc7ea871c54c [2024-10-15 00:00:42,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:00:42,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:00:42,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:00:42,272 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:00:42,273 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:00:42,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-10-15 00:00:43,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:00:44,050 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:00:44,051 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-10-15 00:00:44,059 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f35b7c53/e2fe6a7fb3564b9193d53c0940d5b2a7/FLAGa1ae9eda0 [2024-10-15 00:00:44,417 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f35b7c53/e2fe6a7fb3564b9193d53c0940d5b2a7 [2024-10-15 00:00:44,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:00:44,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:00:44,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:00:44,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:00:44,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:00:44,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:00:44" (1/1) ... [2024-10-15 00:00:44,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1034ac91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44, skipping insertion in model container [2024-10-15 00:00:44,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:00:44" (1/1) ... [2024-10-15 00:00:44,455 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:00:44,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:00:44,624 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:00:44,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:00:44,713 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:00:44,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44 WrapperNode [2024-10-15 00:00:44,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:00:44,715 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:00:44,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:00:44,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:00:44,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44" (1/1) ... [2024-10-15 00:00:44,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44" (1/1) ... [2024-10-15 00:00:44,807 INFO L138 Inliner]: procedures = 21, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2024-10-15 00:00:44,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:00:44,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:00:44,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:00:44,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:00:44,821 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44" (1/1) ... [2024-10-15 00:00:44,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44" (1/1) ... [2024-10-15 00:00:44,827 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44" (1/1) ... [2024-10-15 00:00:44,848 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-15 00:00:44,848 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44" (1/1) ... [2024-10-15 00:00:44,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44" (1/1) ... [2024-10-15 00:00:44,859 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44" (1/1) ... [2024-10-15 00:00:44,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44" (1/1) ... [2024-10-15 00:00:44,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44" (1/1) ... [2024-10-15 00:00:44,865 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44" (1/1) ... [2024-10-15 00:00:44,867 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:00:44,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:00:44,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:00:44,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:00:44,870 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44" (1/1) ... [2024-10-15 00:00:44,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:00:44,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:44,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 00:00:44,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 00:00:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:00:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:00:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:00:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:00:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:00:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-15 00:00:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-15 00:00:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:00:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:00:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:00:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:00:44,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:00:44,999 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:00:45,100 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:00:45,101 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:00:45,304 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:00:45,304 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:00:45,464 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:00:45,464 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-15 00:00:45,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:00:45 BoogieIcfgContainer [2024-10-15 00:00:45,464 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:00:45,466 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:00:45,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:00:45,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:00:45,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:00:44" (1/3) ... [2024-10-15 00:00:45,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357c9ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:00:45, skipping insertion in model container [2024-10-15 00:00:45,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:44" (2/3) ... [2024-10-15 00:00:45,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357c9ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:00:45, skipping insertion in model container [2024-10-15 00:00:45,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:00:45" (3/3) ... [2024-10-15 00:00:45,471 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2024-10-15 00:00:45,484 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:00:45,484 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-15 00:00:45,484 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:00:45,529 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-15 00:00:45,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 121 flow [2024-10-15 00:00:45,586 INFO L124 PetriNetUnfolderBase]: 6/47 cut-off events. [2024-10-15 00:00:45,587 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-15 00:00:45,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 6/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 149 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-10-15 00:00:45,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 50 transitions, 121 flow [2024-10-15 00:00:45,600 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 45 transitions, 105 flow [2024-10-15 00:00:45,612 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:00:45,620 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;@2842977a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:00:45,620 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-10-15 00:00:45,626 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:00:45,629 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-10-15 00:00:45,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:00:45,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:45,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-15 00:00:45,630 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-15 00:00:45,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:45,636 INFO L85 PathProgramCache]: Analyzing trace with hash -362756467, now seen corresponding path program 1 times [2024-10-15 00:00:45,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:45,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602807179] [2024-10-15 00:00:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:45,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:45,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:45,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:45,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602807179] [2024-10-15 00:00:45,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602807179] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:45,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:45,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:00:45,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637613618] [2024-10-15 00:00:45,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:45,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:00:45,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:45,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:00:45,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:00:45,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-15 00:00:45,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:45,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:45,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-15 00:00:45,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:46,705 INFO L124 PetriNetUnfolderBase]: 6040/8174 cut-off events. [2024-10-15 00:00:46,707 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-10-15 00:00:46,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15720 conditions, 8174 events. 6040/8174 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 43576 event pairs, 1250 based on Foata normal form. 0/4381 useless extension candidates. Maximal degree in co-relation 14902. Up to 7243 conditions per place. [2024-10-15 00:00:46,831 INFO L140 encePairwiseOnDemand]: 31/50 looper letters, 42 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2024-10-15 00:00:46,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 247 flow [2024-10-15 00:00:46,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:00:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:00:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-15 00:00:46,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7066666666666667 [2024-10-15 00:00:46,849 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 105 flow. Second operand 3 states and 106 transitions. [2024-10-15 00:00:46,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 247 flow [2024-10-15 00:00:46,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 231 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-15 00:00:46,859 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 165 flow [2024-10-15 00:00:46,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2024-10-15 00:00:46,866 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2024-10-15 00:00:46,867 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 165 flow [2024-10-15 00:00:46,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:46,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:46,867 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:46,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:00:46,868 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-15 00:00:46,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:46,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1456800313, now seen corresponding path program 1 times [2024-10-15 00:00:46,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:46,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372268266] [2024-10-15 00:00:46,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:46,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:46,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:46,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372268266] [2024-10-15 00:00:46,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372268266] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:46,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:46,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:00:46,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087771090] [2024-10-15 00:00:46,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:46,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:00:46,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:46,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:00:46,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:00:46,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-15 00:00:46,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:46,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:46,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-15 00:00:46,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:47,413 INFO L124 PetriNetUnfolderBase]: 4027/5730 cut-off events. [2024-10-15 00:00:47,414 INFO L125 PetriNetUnfolderBase]: For 1045/1045 co-relation queries the response was YES. [2024-10-15 00:00:47,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14180 conditions, 5730 events. 4027/5730 cut-off events. For 1045/1045 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 32569 event pairs, 1478 based on Foata normal form. 0/3256 useless extension candidates. Maximal degree in co-relation 6966. Up to 4901 conditions per place. [2024-10-15 00:00:47,461 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 35 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2024-10-15 00:00:47,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 225 flow [2024-10-15 00:00:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:00:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:00:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-15 00:00:47,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-10-15 00:00:47,465 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 165 flow. Second operand 3 states and 78 transitions. [2024-10-15 00:00:47,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 225 flow [2024-10-15 00:00:47,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:00:47,469 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 148 flow [2024-10-15 00:00:47,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2024-10-15 00:00:47,474 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-10-15 00:00:47,474 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 148 flow [2024-10-15 00:00:47,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:47,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:47,475 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:47,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 00:00:47,475 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-15 00:00:47,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:47,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1456800312, now seen corresponding path program 1 times [2024-10-15 00:00:47,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:47,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618334484] [2024-10-15 00:00:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:47,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:47,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:47,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618334484] [2024-10-15 00:00:47,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618334484] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:47,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728500865] [2024-10-15 00:00:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:47,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:47,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:47,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:00:47,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:00:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:47,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:00:47,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:47,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:47,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728500865] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:47,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:47,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-15 00:00:47,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946171791] [2024-10-15 00:00:47,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:47,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-15 00:00:47,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-15 00:00:47,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-15 00:00:47,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-15 00:00:47,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:47,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:47,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-15 00:00:47,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:49,328 INFO L124 PetriNetUnfolderBase]: 9573/13756 cut-off events. [2024-10-15 00:00:49,329 INFO L125 PetriNetUnfolderBase]: For 2676/2676 co-relation queries the response was YES. [2024-10-15 00:00:49,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33365 conditions, 13756 events. 9573/13756 cut-off events. For 2676/2676 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 79165 event pairs, 483 based on Foata normal form. 0/9666 useless extension candidates. Maximal degree in co-relation 33357. Up to 7387 conditions per place. [2024-10-15 00:00:49,535 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 99 selfloop transitions, 37 changer transitions 0/148 dead transitions. [2024-10-15 00:00:49,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 148 transitions, 721 flow [2024-10-15 00:00:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 00:00:49,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-15 00:00:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 263 transitions. [2024-10-15 00:00:49,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7514285714285714 [2024-10-15 00:00:49,546 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 148 flow. Second operand 7 states and 263 transitions. [2024-10-15 00:00:49,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 148 transitions, 721 flow [2024-10-15 00:00:49,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 148 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:00:49,554 INFO L231 Difference]: Finished difference. Result has 54 places, 78 transitions, 467 flow [2024-10-15 00:00:49,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=467, PETRI_PLACES=54, PETRI_TRANSITIONS=78} [2024-10-15 00:00:49,555 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2024-10-15 00:00:49,555 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 78 transitions, 467 flow [2024-10-15 00:00:49,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:49,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:49,556 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:49,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 00:00:49,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:49,761 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-15 00:00:49,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:49,762 INFO L85 PathProgramCache]: Analyzing trace with hash 35275578, now seen corresponding path program 1 times [2024-10-15 00:00:49,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:49,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237324316] [2024-10-15 00:00:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:49,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:49,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:49,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237324316] [2024-10-15 00:00:49,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237324316] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:49,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:49,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:00:49,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081860282] [2024-10-15 00:00:49,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:49,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:00:49,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:49,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:00:49,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:00:49,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-15 00:00:49,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 78 transitions, 467 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:49,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:49,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-15 00:00:49,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:51,780 INFO L124 PetriNetUnfolderBase]: 9871/14216 cut-off events. [2024-10-15 00:00:51,780 INFO L125 PetriNetUnfolderBase]: For 31685/31685 co-relation queries the response was YES. [2024-10-15 00:00:51,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50174 conditions, 14216 events. 9871/14216 cut-off events. For 31685/31685 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 82698 event pairs, 1143 based on Foata normal form. 49/13085 useless extension candidates. Maximal degree in co-relation 50161. Up to 12016 conditions per place. [2024-10-15 00:00:51,885 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 81 selfloop transitions, 19 changer transitions 0/112 dead transitions. [2024-10-15 00:00:51,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 112 transitions, 817 flow [2024-10-15 00:00:51,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:00:51,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:00:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-10-15 00:00:51,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-15 00:00:51,891 INFO L175 Difference]: Start difference. First operand has 54 places, 78 transitions, 467 flow. Second operand 4 states and 130 transitions. [2024-10-15 00:00:51,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 112 transitions, 817 flow [2024-10-15 00:00:51,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 112 transitions, 780 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-10-15 00:00:51,937 INFO L231 Difference]: Finished difference. Result has 58 places, 90 transitions, 622 flow [2024-10-15 00:00:51,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=622, PETRI_PLACES=58, PETRI_TRANSITIONS=90} [2024-10-15 00:00:51,938 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-10-15 00:00:51,939 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 90 transitions, 622 flow [2024-10-15 00:00:51,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:51,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:51,940 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:51,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 00:00:51,940 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-15 00:00:51,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:51,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1159067946, now seen corresponding path program 1 times [2024-10-15 00:00:51,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:51,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426114586] [2024-10-15 00:00:51,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:51,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:52,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:52,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426114586] [2024-10-15 00:00:52,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426114586] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:52,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:52,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:00:52,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978463041] [2024-10-15 00:00:52,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:52,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:00:52,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:52,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:00:52,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:00:52,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-15 00:00:52,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 90 transitions, 622 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:52,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:52,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-15 00:00:52,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:53,453 INFO L124 PetriNetUnfolderBase]: 11519/16794 cut-off events. [2024-10-15 00:00:53,453 INFO L125 PetriNetUnfolderBase]: For 53567/53567 co-relation queries the response was YES. [2024-10-15 00:00:53,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61163 conditions, 16794 events. 11519/16794 cut-off events. For 53567/53567 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 102548 event pairs, 1329 based on Foata normal form. 943/16369 useless extension candidates. Maximal degree in co-relation 61147. Up to 12931 conditions per place. [2024-10-15 00:00:53,594 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 93 selfloop transitions, 28 changer transitions 0/133 dead transitions. [2024-10-15 00:00:53,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 133 transitions, 1087 flow [2024-10-15 00:00:53,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:00:53,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:00:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-10-15 00:00:53,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71 [2024-10-15 00:00:53,597 INFO L175 Difference]: Start difference. First operand has 58 places, 90 transitions, 622 flow. Second operand 4 states and 142 transitions. [2024-10-15 00:00:53,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 133 transitions, 1087 flow [2024-10-15 00:00:53,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 133 transitions, 1047 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-10-15 00:00:53,670 INFO L231 Difference]: Finished difference. Result has 62 places, 111 transitions, 924 flow [2024-10-15 00:00:53,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=924, PETRI_PLACES=62, PETRI_TRANSITIONS=111} [2024-10-15 00:00:53,671 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2024-10-15 00:00:53,672 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 111 transitions, 924 flow [2024-10-15 00:00:53,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:53,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:53,673 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:53,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-15 00:00:53,673 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-15 00:00:53,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:53,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1456800279, now seen corresponding path program 1 times [2024-10-15 00:00:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:53,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342751826] [2024-10-15 00:00:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:53,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:53,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:53,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342751826] [2024-10-15 00:00:53,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342751826] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:53,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039834906] [2024-10-15 00:00:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:53,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:53,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:53,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:00:53,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:00:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:53,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:00:53,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:53,797 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:00:53,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039834906] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:53,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:00:53,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-15 00:00:53,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187661139] [2024-10-15 00:00:53,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:53,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:00:53,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:53,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:00:53,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:00:53,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-15 00:00:53,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 111 transitions, 924 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:53,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:53,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-15 00:00:53,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:56,210 INFO L124 PetriNetUnfolderBase]: 17271/25551 cut-off events. [2024-10-15 00:00:56,210 INFO L125 PetriNetUnfolderBase]: For 152971/152971 co-relation queries the response was YES. [2024-10-15 00:00:56,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108372 conditions, 25551 events. 17271/25551 cut-off events. For 152971/152971 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 164208 event pairs, 1779 based on Foata normal form. 1288/24878 useless extension candidates. Maximal degree in co-relation 108353. Up to 13545 conditions per place. [2024-10-15 00:00:56,427 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 130 selfloop transitions, 40 changer transitions 0/182 dead transitions. [2024-10-15 00:00:56,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 182 transitions, 1815 flow [2024-10-15 00:00:56,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:00:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:00:56,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-10-15 00:00:56,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.73 [2024-10-15 00:00:56,429 INFO L175 Difference]: Start difference. First operand has 62 places, 111 transitions, 924 flow. Second operand 4 states and 146 transitions. [2024-10-15 00:00:56,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 182 transitions, 1815 flow [2024-10-15 00:00:56,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 182 transitions, 1749 flow, removed 33 selfloop flow, removed 0 redundant places. [2024-10-15 00:00:56,558 INFO L231 Difference]: Finished difference. Result has 67 places, 144 transitions, 1481 flow [2024-10-15 00:00:56,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1481, PETRI_PLACES=67, PETRI_TRANSITIONS=144} [2024-10-15 00:00:56,559 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 18 predicate places. [2024-10-15 00:00:56,560 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 144 transitions, 1481 flow [2024-10-15 00:00:56,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:56,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:56,560 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:56,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 00:00:56,764 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,SelfDestructingSolverStorable5 [2024-10-15 00:00:56,765 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-15 00:00:56,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1428690364, now seen corresponding path program 1 times [2024-10-15 00:00:56,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:56,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451444777] [2024-10-15 00:00:56,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:56,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:56,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:56,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451444777] [2024-10-15 00:00:56,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451444777] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:56,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560544650] [2024-10-15 00:00:56,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:56,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:56,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:56,838 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:00:56,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:00:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:56,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:00:56,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:56,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:56,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560544650] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:56,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:56,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2024-10-15 00:00:56,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820838310] [2024-10-15 00:00:56,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:56,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 00:00:56,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:56,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 00:00:56,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2024-10-15 00:00:56,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-15 00:00:56,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 144 transitions, 1481 flow. Second operand has 10 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:56,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:56,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-15 00:00:56,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:01:10,048 INFO L124 PetriNetUnfolderBase]: 78250/116850 cut-off events. [2024-10-15 00:01:10,048 INFO L125 PetriNetUnfolderBase]: For 1155297/1155297 co-relation queries the response was YES. [2024-10-15 00:01:10,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547950 conditions, 116850 events. 78250/116850 cut-off events. For 1155297/1155297 co-relation queries the response was YES. Maximal size of possible extension queue 1690. Compared 833126 event pairs, 2519 based on Foata normal form. 5813/115226 useless extension candidates. Maximal degree in co-relation 547927. Up to 51377 conditions per place. [2024-10-15 00:01:11,744 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 290 selfloop transitions, 366 changer transitions 0/668 dead transitions. [2024-10-15 00:01:11,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 668 transitions, 8437 flow [2024-10-15 00:01:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:01:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:01:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 382 transitions. [2024-10-15 00:01:11,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.764 [2024-10-15 00:01:11,749 INFO L175 Difference]: Start difference. First operand has 67 places, 144 transitions, 1481 flow. Second operand 10 states and 382 transitions. [2024-10-15 00:01:11,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 668 transitions, 8437 flow [2024-10-15 00:01:21,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 668 transitions, 7771 flow, removed 333 selfloop flow, removed 0 redundant places. [2024-10-15 00:01:21,708 INFO L231 Difference]: Finished difference. Result has 82 places, 504 transitions, 7224 flow [2024-10-15 00:01:21,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7224, PETRI_PLACES=82, PETRI_TRANSITIONS=504} [2024-10-15 00:01:21,709 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 33 predicate places. [2024-10-15 00:01:21,710 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 504 transitions, 7224 flow [2024-10-15 00:01:21,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:01:21,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:01:21,710 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:01:21,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 00:01:21,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:01:21,915 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-15 00:01:21,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:01:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1399317895, now seen corresponding path program 1 times [2024-10-15 00:01:21,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:01:21,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13079089] [2024-10-15 00:01:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:21,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:01:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:21,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:01:21,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13079089] [2024-10-15 00:01:21,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13079089] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:01:21,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412461577] [2024-10-15 00:01:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:21,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:01:21,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:01:21,980 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:01:21,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:01:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:22,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:01:22,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:01:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:22,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:01:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:22,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412461577] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:01:22,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:01:22,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-15 00:01:22,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670902502] [2024-10-15 00:01:22,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:01:22,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 00:01:22,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:01:22,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 00:01:22,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-10-15 00:01:22,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-15 00:01:22,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 504 transitions, 7224 flow. Second operand has 11 states, 11 states have (on average 17.272727272727273) internal successors, (190), 11 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:01:22,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:01:22,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-15 00:01:22,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:03,261 INFO L124 PetriNetUnfolderBase]: 189276/283033 cut-off events. [2024-10-15 00:02:03,261 INFO L125 PetriNetUnfolderBase]: For 4978342/4978342 co-relation queries the response was YES. [2024-10-15 00:02:04,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373445 conditions, 283033 events. 189276/283033 cut-off events. For 4978342/4978342 co-relation queries the response was YES. Maximal size of possible extension queue 4097. Compared 2259427 event pairs, 7023 based on Foata normal form. 48406/314404 useless extension candidates. Maximal degree in co-relation 1373414. Up to 119971 conditions per place. [2024-10-15 00:02:07,073 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 492 selfloop transitions, 972 changer transitions 0/1476 dead transitions. [2024-10-15 00:02:07,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 1476 transitions, 23532 flow [2024-10-15 00:02:07,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 00:02:07,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-15 00:02:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 435 transitions. [2024-10-15 00:02:07,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7909090909090909 [2024-10-15 00:02:07,075 INFO L175 Difference]: Start difference. First operand has 82 places, 504 transitions, 7224 flow. Second operand 11 states and 435 transitions. [2024-10-15 00:02:07,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 1476 transitions, 23532 flow