./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/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:05:50,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:05:50,953 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:05:50,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:05:50,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:05:51,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:05:51,008 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:05:51,008 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:05:51,009 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:05:51,009 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:05:51,009 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:05:51,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:05:51,010 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:05:51,011 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:05:51,012 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:05:51,012 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:05:51,012 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:05:51,012 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:05:51,014 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:05:51,014 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:05:51,015 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:05:51,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:05:51,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:05:51,018 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:05:51,018 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:05:51,018 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:05:51,018 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:05:51,018 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:05:51,018 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:05:51,019 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:05:51,019 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:05:51,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:05:51,019 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:05:51,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:05:51,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:05:51,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:05:51,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:05:51,020 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:05:51,020 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:05:51,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:05:51,020 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:05:51,022 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:05:51,022 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:05:51,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:05:51,022 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 [2024-10-12 00:05:51,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:05:51,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:05:51,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:05:51,282 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:05:51,283 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:05:51,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-12 00:05:52,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:05:52,844 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:05:52,844 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-12 00:05:52,854 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c4c615c42/fd229a25234246bca92c57c0dbeaff49/FLAG40906e80f [2024-10-12 00:05:52,868 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c4c615c42/fd229a25234246bca92c57c0dbeaff49 [2024-10-12 00:05:52,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:05:52,872 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:05:52,873 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:05:52,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:05:52,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:05:52,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:05:52" (1/1) ... [2024-10-12 00:05:52,881 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32241d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:52, skipping insertion in model container [2024-10-12 00:05:52,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:05:52" (1/1) ... [2024-10-12 00:05:52,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:05:53,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:05:53,094 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:05:53,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:05:53,142 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:05:53,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:53 WrapperNode [2024-10-12 00:05:53,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:05:53,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:05:53,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:05:53,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:05:53,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:53" (1/1) ... [2024-10-12 00:05:53,159 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:53" (1/1) ... [2024-10-12 00:05:53,202 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 111 [2024-10-12 00:05:53,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:05:53,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:05:53,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:05:53,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:05:53,217 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:53" (1/1) ... [2024-10-12 00:05:53,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:53" (1/1) ... [2024-10-12 00:05:53,223 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:53" (1/1) ... [2024-10-12 00:05:53,236 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]. [2024-10-12 00:05:53,237 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:53" (1/1) ... [2024-10-12 00:05:53,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:53" (1/1) ... [2024-10-12 00:05:53,259 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:53" (1/1) ... [2024-10-12 00:05:53,262 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:53" (1/1) ... [2024-10-12 00:05:53,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:53" (1/1) ... [2024-10-12 00:05:53,267 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:53" (1/1) ... [2024-10-12 00:05:53,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:05:53,270 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:05:53,270 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:05:53,270 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:05:53,271 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:53" (1/1) ... [2024-10-12 00:05:53,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:05:53,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:53,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:05:53,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:05:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:05:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:05:53,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:05:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:05:53,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:05:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:05:53,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:05:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-12 00:05:53,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-12 00:05:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:05:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:05:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:05:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:05:53,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:05:53,359 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:05:53,457 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:05:53,459 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:05:53,705 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:05:53,706 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:05:53,836 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:05:53,836 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-12 00:05:53,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:05:53 BoogieIcfgContainer [2024-10-12 00:05:53,837 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:05:53,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:05:53,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:05:53,846 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:05:53,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:05:52" (1/3) ... [2024-10-12 00:05:53,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee681c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:05:53, skipping insertion in model container [2024-10-12 00:05:53,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:53" (2/3) ... [2024-10-12 00:05:53,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee681c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:05:53, skipping insertion in model container [2024-10-12 00:05:53,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:05:53" (3/3) ... [2024-10-12 00:05:53,850 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-10-12 00:05:53,868 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:05:53,869 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-12 00:05:53,869 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:05:53,949 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-12 00:05:53,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-10-12 00:05:54,028 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-10-12 00:05:54,029 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-12 00:05:54,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 163 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-10-12 00:05:54,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-10-12 00:05:54,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 133 flow [2024-10-12 00:05:54,049 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:05:54,060 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;@925ffab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:05:54,060 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-10-12 00:05:54,064 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:05:54,066 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-12 00:05:54,066 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:05:54,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:54,067 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-12 00:05:54,068 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:05:54,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:54,073 INFO L85 PathProgramCache]: Analyzing trace with hash 384261220, now seen corresponding path program 1 times [2024-10-12 00:05:54,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:54,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842627450] [2024-10-12 00:05:54,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:54,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:54,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:54,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842627450] [2024-10-12 00:05:54,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842627450] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:54,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:54,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:05:54,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595153469] [2024-10-12 00:05:54,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:54,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:05:54,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:54,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:05:54,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:05:54,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-12 00:05:54,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-10-12 00:05:54,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:54,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-12 00:05:54,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:55,702 INFO L124 PetriNetUnfolderBase]: 9115/14582 cut-off events. [2024-10-12 00:05:55,702 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2024-10-12 00:05:55,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27350 conditions, 14582 events. 9115/14582 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 105856 event pairs, 2507 based on Foata normal form. 249/11312 useless extension candidates. Maximal degree in co-relation 24833. Up to 9045 conditions per place. [2024-10-12 00:05:55,885 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 57 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-10-12 00:05:55,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 79 transitions, 315 flow [2024-10-12 00:05:55,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:05:55,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:05:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-10-12 00:05:55,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7473118279569892 [2024-10-12 00:05:55,899 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 133 flow. Second operand 3 states and 139 transitions. [2024-10-12 00:05:55,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 79 transitions, 315 flow [2024-10-12 00:05:55,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 79 transitions, 291 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-12 00:05:55,933 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 134 flow [2024-10-12 00:05:55,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2024-10-12 00:05:55,939 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -6 predicate places. [2024-10-12 00:05:55,940 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 134 flow [2024-10-12 00:05:55,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-10-12 00:05:55,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:55,941 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:55,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:05:55,941 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:05:55,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:55,942 INFO L85 PathProgramCache]: Analyzing trace with hash -92139897, now seen corresponding path program 1 times [2024-10-12 00:05:55,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:55,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506128966] [2024-10-12 00:05:55,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:55,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:56,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:56,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506128966] [2024-10-12 00:05:56,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506128966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:56,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:56,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:05:56,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142523481] [2024-10-12 00:05:56,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:56,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:56,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:56,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:56,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:56,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-12 00:05:56,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-10-12 00:05:56,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:56,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-12 00:05:56,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:57,683 INFO L124 PetriNetUnfolderBase]: 15375/22262 cut-off events. [2024-10-12 00:05:57,684 INFO L125 PetriNetUnfolderBase]: For 1340/1340 co-relation queries the response was YES. [2024-10-12 00:05:57,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46230 conditions, 22262 events. 15375/22262 cut-off events. For 1340/1340 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 147464 event pairs, 8887 based on Foata normal form. 372/17572 useless extension candidates. Maximal degree in co-relation 20640. Up to 16077 conditions per place. [2024-10-12 00:05:57,851 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 83 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-10-12 00:05:57,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 104 transitions, 422 flow [2024-10-12 00:05:57,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-10-12 00:05:57,855 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6975806451612904 [2024-10-12 00:05:57,856 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 134 flow. Second operand 4 states and 173 transitions. [2024-10-12 00:05:57,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 104 transitions, 422 flow [2024-10-12 00:05:57,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 104 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:57,858 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 161 flow [2024-10-12 00:05:57,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-10-12 00:05:57,859 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -2 predicate places. [2024-10-12 00:05:57,859 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 161 flow [2024-10-12 00:05:57,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-10-12 00:05:57,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:57,860 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:57,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:05:57,861 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:05:57,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:57,863 INFO L85 PathProgramCache]: Analyzing trace with hash -917465738, now seen corresponding path program 1 times [2024-10-12 00:05:57,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:57,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917397208] [2024-10-12 00:05:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:57,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:57,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:57,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917397208] [2024-10-12 00:05:58,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917397208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:58,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:58,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:05:58,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980042420] [2024-10-12 00:05:58,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:58,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:05:58,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:58,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:05:58,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:05:58,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-12 00:05:58,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-12 00:05:58,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:58,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-12 00:05:58,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:59,219 INFO L124 PetriNetUnfolderBase]: 11739/18766 cut-off events. [2024-10-12 00:05:59,219 INFO L125 PetriNetUnfolderBase]: For 3846/5124 co-relation queries the response was YES. [2024-10-12 00:05:59,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40088 conditions, 18766 events. 11739/18766 cut-off events. For 3846/5124 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 136311 event pairs, 3308 based on Foata normal form. 576/15602 useless extension candidates. Maximal degree in co-relation 25685. Up to 11443 conditions per place. [2024-10-12 00:05:59,350 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 58 selfloop transitions, 2 changer transitions 1/82 dead transitions. [2024-10-12 00:05:59,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 82 transitions, 361 flow [2024-10-12 00:05:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:05:59,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:05:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-10-12 00:05:59,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7043010752688172 [2024-10-12 00:05:59,352 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 161 flow. Second operand 3 states and 131 transitions. [2024-10-12 00:05:59,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 82 transitions, 361 flow [2024-10-12 00:05:59,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:59,356 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 176 flow [2024-10-12 00:05:59,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-10-12 00:05:59,357 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 0 predicate places. [2024-10-12 00:05:59,357 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 176 flow [2024-10-12 00:05:59,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-12 00:05:59,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:59,357 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:59,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:05:59,358 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:05:59,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:59,358 INFO L85 PathProgramCache]: Analyzing trace with hash -210445273, now seen corresponding path program 1 times [2024-10-12 00:05:59,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:59,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017097623] [2024-10-12 00:05:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:59,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:59,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:59,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017097623] [2024-10-12 00:05:59,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017097623] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:59,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:59,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:05:59,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421962476] [2024-10-12 00:05:59,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:59,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:59,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:59,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:59,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:59,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-12 00:05:59,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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) [2024-10-12 00:05:59,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:59,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-12 00:05:59,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:01,403 INFO L124 PetriNetUnfolderBase]: 18934/30472 cut-off events. [2024-10-12 00:06:01,403 INFO L125 PetriNetUnfolderBase]: For 6818/7418 co-relation queries the response was YES. [2024-10-12 00:06:01,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70572 conditions, 30472 events. 18934/30472 cut-off events. For 6818/7418 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 240053 event pairs, 5659 based on Foata normal form. 720/26100 useless extension candidates. Maximal degree in co-relation 17661. Up to 8852 conditions per place. [2024-10-12 00:06:01,703 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 91 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2024-10-12 00:06:01,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 118 transitions, 546 flow [2024-10-12 00:06:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:01,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-10-12 00:06:01,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7741935483870968 [2024-10-12 00:06:01,707 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 176 flow. Second operand 4 states and 192 transitions. [2024-10-12 00:06:01,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 118 transitions, 546 flow [2024-10-12 00:06:01,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 118 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:01,717 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 232 flow [2024-10-12 00:06:01,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-10-12 00:06:01,719 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 5 predicate places. [2024-10-12 00:06:01,719 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 232 flow [2024-10-12 00:06:01,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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) [2024-10-12 00:06:01,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:01,720 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:01,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:06:01,721 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:06:01,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:01,722 INFO L85 PathProgramCache]: Analyzing trace with hash -455125797, now seen corresponding path program 1 times [2024-10-12 00:06:01,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:01,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580379249] [2024-10-12 00:06:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:01,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:01,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:01,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580379249] [2024-10-12 00:06:01,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580379249] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:01,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893321705] [2024-10-12 00:06:01,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:01,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:01,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:01,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:01,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:06:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:01,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:06:01,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:01,882 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:06:01,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893321705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:01,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:06:01,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-12 00:06:01,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020732011] [2024-10-12 00:06:01,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:01,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:01,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:01,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:01,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:06:01,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-12 00:06:01,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2024-10-12 00:06:01,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:01,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-12 00:06:01,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:04,185 INFO L124 PetriNetUnfolderBase]: 20899/32657 cut-off events. [2024-10-12 00:06:04,186 INFO L125 PetriNetUnfolderBase]: For 26743/27854 co-relation queries the response was YES. [2024-10-12 00:06:04,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83848 conditions, 32657 events. 20899/32657 cut-off events. For 26743/27854 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 247729 event pairs, 7245 based on Foata normal form. 1292/29712 useless extension candidates. Maximal degree in co-relation 39589. Up to 14689 conditions per place. [2024-10-12 00:06:04,452 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 64 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2024-10-12 00:06:04,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 471 flow [2024-10-12 00:06:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:04,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-10-12 00:06:04,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6491935483870968 [2024-10-12 00:06:04,454 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 232 flow. Second operand 4 states and 161 transitions. [2024-10-12 00:06:04,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 471 flow [2024-10-12 00:06:04,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 465 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:04,483 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 279 flow [2024-10-12 00:06:04,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2024-10-12 00:06:04,484 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2024-10-12 00:06:04,484 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 279 flow [2024-10-12 00:06:04,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2024-10-12 00:06:04,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:04,485 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:04,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:06:04,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:04,686 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:06:04,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:04,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1216262695, now seen corresponding path program 1 times [2024-10-12 00:06:04,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:04,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345032175] [2024-10-12 00:06:04,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:04,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:04,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:04,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345032175] [2024-10-12 00:06:04,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345032175] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:04,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:04,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:06:04,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474159890] [2024-10-12 00:06:04,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:04,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:04,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:04,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:04,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:04,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-12 00:06:04,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-12 00:06:04,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:04,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-12 00:06:04,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:08,602 INFO L124 PetriNetUnfolderBase]: 36029/52511 cut-off events. [2024-10-12 00:06:08,602 INFO L125 PetriNetUnfolderBase]: For 83789/87701 co-relation queries the response was YES. [2024-10-12 00:06:08,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143806 conditions, 52511 events. 36029/52511 cut-off events. For 83789/87701 co-relation queries the response was YES. Maximal size of possible extension queue 1726. Compared 382445 event pairs, 20166 based on Foata normal form. 1792/49291 useless extension candidates. Maximal degree in co-relation 63047. Up to 37232 conditions per place. [2024-10-12 00:06:09,284 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 106 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2024-10-12 00:06:09,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 128 transitions, 859 flow [2024-10-12 00:06:09,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:09,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:09,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-10-12 00:06:09,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6693548387096774 [2024-10-12 00:06:09,290 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 279 flow. Second operand 4 states and 166 transitions. [2024-10-12 00:06:09,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 128 transitions, 859 flow [2024-10-12 00:06:09,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 128 transitions, 798 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:09,354 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 287 flow [2024-10-12 00:06:09,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=287, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-10-12 00:06:09,355 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2024-10-12 00:06:09,355 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 287 flow [2024-10-12 00:06:09,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-12 00:06:09,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:09,356 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:09,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:06:09,356 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:06:09,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:09,356 INFO L85 PathProgramCache]: Analyzing trace with hash -374429911, now seen corresponding path program 1 times [2024-10-12 00:06:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:09,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194907938] [2024-10-12 00:06:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:09,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:09,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:09,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194907938] [2024-10-12 00:06:09,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194907938] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:09,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:09,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:06:09,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712240890] [2024-10-12 00:06:09,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:09,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:09,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:09,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:09,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:09,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-12 00:06:09,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-12 00:06:09,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:09,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-12 00:06:09,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:15,018 INFO L124 PetriNetUnfolderBase]: 52888/78092 cut-off events. [2024-10-12 00:06:15,018 INFO L125 PetriNetUnfolderBase]: For 82162/92631 co-relation queries the response was YES. [2024-10-12 00:06:15,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212303 conditions, 78092 events. 52888/78092 cut-off events. For 82162/92631 co-relation queries the response was YES. Maximal size of possible extension queue 2308. Compared 599228 event pairs, 29683 based on Foata normal form. 4044/73373 useless extension candidates. Maximal degree in co-relation 75557. Up to 50214 conditions per place. [2024-10-12 00:06:15,820 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 112 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2024-10-12 00:06:15,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 135 transitions, 829 flow [2024-10-12 00:06:15,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:15,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-10-12 00:06:15,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6854838709677419 [2024-10-12 00:06:15,822 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 287 flow. Second operand 4 states and 170 transitions. [2024-10-12 00:06:15,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 135 transitions, 829 flow [2024-10-12 00:06:16,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 135 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:16,003 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 313 flow [2024-10-12 00:06:16,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-10-12 00:06:16,004 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 16 predicate places. [2024-10-12 00:06:16,004 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 313 flow [2024-10-12 00:06:16,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-12 00:06:16,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:16,004 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:16,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:06:16,004 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:06:16,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:16,005 INFO L85 PathProgramCache]: Analyzing trace with hash 710788414, now seen corresponding path program 1 times [2024-10-12 00:06:16,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:16,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112740249] [2024-10-12 00:06:16,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:16,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:16,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:16,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112740249] [2024-10-12 00:06:16,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112740249] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:16,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917009310] [2024-10-12 00:06:16,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:16,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:16,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:16,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:16,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:06:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:16,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:06:16,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:16,143 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:06:16,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917009310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:16,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:06:16,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-12 00:06:16,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114176401] [2024-10-12 00:06:16,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:16,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:06:16,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:16,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:06:16,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:06:16,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-12 00:06:16,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:16,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:16,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-12 00:06:16,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:21,854 INFO L124 PetriNetUnfolderBase]: 47268/70107 cut-off events. [2024-10-12 00:06:21,855 INFO L125 PetriNetUnfolderBase]: For 75116/83846 co-relation queries the response was YES. [2024-10-12 00:06:22,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203272 conditions, 70107 events. 47268/70107 cut-off events. For 75116/83846 co-relation queries the response was YES. Maximal size of possible extension queue 2176. Compared 536059 event pairs, 9345 based on Foata normal form. 5058/66801 useless extension candidates. Maximal degree in co-relation 88400. Up to 23515 conditions per place. [2024-10-12 00:06:22,581 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 158 selfloop transitions, 7 changer transitions 0/184 dead transitions. [2024-10-12 00:06:22,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 184 transitions, 1099 flow [2024-10-12 00:06:22,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:06:22,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:06:22,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-10-12 00:06:22,582 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6881720430107527 [2024-10-12 00:06:22,582 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 313 flow. Second operand 6 states and 256 transitions. [2024-10-12 00:06:22,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 184 transitions, 1099 flow [2024-10-12 00:06:22,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 184 transitions, 1084 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:22,637 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 320 flow [2024-10-12 00:06:22,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2024-10-12 00:06:22,638 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 19 predicate places. [2024-10-12 00:06:22,638 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 320 flow [2024-10-12 00:06:22,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:22,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:22,638 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-12 00:06:22,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 00:06:22,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:22,839 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:06:22,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash 559604801, now seen corresponding path program 1 times [2024-10-12 00:06:22,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:22,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390990741] [2024-10-12 00:06:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:22,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:22,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:22,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390990741] [2024-10-12 00:06:22,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390990741] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:22,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963284756] [2024-10-12 00:06:22,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:22,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:22,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:22,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:22,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:06:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:22,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:06:22,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:23,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:23,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963284756] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:23,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:23,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:06:23,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739393338] [2024-10-12 00:06:23,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:23,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:06:23,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:06:23,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:06:23,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-12 00:06:23,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 22.666666666666668) internal successors, (272), 12 states have internal predecessors, (272), 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) [2024-10-12 00:06:23,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:23,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-12 00:06:23,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:36,393 INFO L124 PetriNetUnfolderBase]: 102170/152964 cut-off events. [2024-10-12 00:06:36,394 INFO L125 PetriNetUnfolderBase]: For 212107/230555 co-relation queries the response was YES. [2024-10-12 00:06:37,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456472 conditions, 152964 events. 102170/152964 cut-off events. For 212107/230555 co-relation queries the response was YES. Maximal size of possible extension queue 3474. Compared 1241699 event pairs, 28367 based on Foata normal form. 11231/151112 useless extension candidates. Maximal degree in co-relation 168760. Up to 57416 conditions per place. [2024-10-12 00:06:38,203 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 299 selfloop transitions, 13 changer transitions 0/331 dead transitions. [2024-10-12 00:06:38,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 331 transitions, 2081 flow [2024-10-12 00:06:38,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:06:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:06:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 448 transitions. [2024-10-12 00:06:38,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7225806451612903 [2024-10-12 00:06:38,205 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 320 flow. Second operand 10 states and 448 transitions. [2024-10-12 00:06:38,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 331 transitions, 2081 flow [2024-10-12 00:06:38,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 331 transitions, 2051 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-12 00:06:38,343 INFO L231 Difference]: Finished difference. Result has 92 places, 79 transitions, 388 flow [2024-10-12 00:06:38,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=388, PETRI_PLACES=92, PETRI_TRANSITIONS=79} [2024-10-12 00:06:38,344 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 27 predicate places. [2024-10-12 00:06:38,344 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 79 transitions, 388 flow [2024-10-12 00:06:38,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.666666666666668) internal successors, (272), 12 states have internal predecessors, (272), 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) [2024-10-12 00:06:38,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:38,345 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:38,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 00:06:38,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:38,546 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-12 00:06:38,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:38,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1406992510, now seen corresponding path program 1 times [2024-10-12 00:06:38,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:38,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010134316] [2024-10-12 00:06:38,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:38,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:38,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:38,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010134316] [2024-10-12 00:06:38,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010134316] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:38,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:38,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:06:38,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983397665] [2024-10-12 00:06:38,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:38,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:38,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:38,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:38,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:38,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-12 00:06:38,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 79 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-10-12 00:06:38,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:38,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-12 00:06:38,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand