./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-proofs-counter-add-4-semi-Q67.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34bb015d05a3d6b765805bee36bd4c1bc3f74929c05e61a51973bc9a4fc2cfc0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:51:41,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:51:41,797 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:51:41,802 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:51:41,803 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:51:41,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:51:41,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:51:41,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:51:41,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:51:41,832 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:51:41,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:51:41,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:51:41,834 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:51:41,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:51:41,835 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:51:41,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:51:41,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:51:41,839 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:51:41,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:51:41,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:51:41,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:51:41,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:51:41,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:51:41,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:51:41,841 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:51:41,841 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:51:41,841 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:51:41,841 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:51:41,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:51:41,841 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:51:41,842 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:51:41,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:51:41,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:51:41,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:51:41,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:51:41,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:51:41,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:51:41,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:51:41,843 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:51:41,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:51:41,844 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:51:41,845 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:51:41,845 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:51:41,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:51:41,846 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34bb015d05a3d6b765805bee36bd4c1bc3f74929c05e61a51973bc9a4fc2cfc0 [2024-10-13 16:51:42,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:51:42,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:51:42,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:51:42,058 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:51:42,058 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:51:42,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-10-13 16:51:43,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:51:43,503 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:51:43,503 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-10-13 16:51:43,509 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55f43892e/f1f30c7de4e3409facd804031b89c36e/FLAG93ca8518d [2024-10-13 16:51:43,523 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55f43892e/f1f30c7de4e3409facd804031b89c36e [2024-10-13 16:51:43,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:51:43,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:51:43,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:51:43,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:51:43,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:51:43,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:51:43" (1/1) ... [2024-10-13 16:51:43,538 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d1491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43, skipping insertion in model container [2024-10-13 16:51:43,538 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:51:43" (1/1) ... [2024-10-13 16:51:43,558 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:51:43,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:51:43,749 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:51:43,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:51:43,786 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:51:43,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43 WrapperNode [2024-10-13 16:51:43,786 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:51:43,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:51:43,787 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:51:43,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:51:43,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43" (1/1) ... [2024-10-13 16:51:43,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43" (1/1) ... [2024-10-13 16:51:43,828 INFO L138 Inliner]: procedures = 21, calls = 23, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2024-10-13 16:51:43,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:51:43,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:51:43,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:51:43,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:51:43,842 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43" (1/1) ... [2024-10-13 16:51:43,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43" (1/1) ... [2024-10-13 16:51:43,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43" (1/1) ... [2024-10-13 16:51:43,862 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]. [2024-10-13 16:51:43,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43" (1/1) ... [2024-10-13 16:51:43,863 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43" (1/1) ... [2024-10-13 16:51:43,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43" (1/1) ... [2024-10-13 16:51:43,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43" (1/1) ... [2024-10-13 16:51:43,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43" (1/1) ... [2024-10-13 16:51:43,871 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43" (1/1) ... [2024-10-13 16:51:43,873 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:51:43,873 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:51:43,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:51:43,874 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:51:43,874 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43" (1/1) ... [2024-10-13 16:51:43,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:51:43,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:43,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:51:43,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:51:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:51:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:51:43,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:51:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:51:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:51:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 16:51:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 16:51:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-13 16:51:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-13 16:51:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:51:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 16:51:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 16:51:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:51:43,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:51:43,979 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:51:44,069 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:51:44,071 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:51:44,255 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:51:44,255 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:51:44,428 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:51:44,428 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 16:51:44,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:51:44 BoogieIcfgContainer [2024-10-13 16:51:44,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:51:44,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:51:44,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:51:44,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:51:44,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:51:43" (1/3) ... [2024-10-13 16:51:44,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b114832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:51:44, skipping insertion in model container [2024-10-13 16:51:44,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:43" (2/3) ... [2024-10-13 16:51:44,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b114832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:51:44, skipping insertion in model container [2024-10-13 16:51:44,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:51:44" (3/3) ... [2024-10-13 16:51:44,436 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-10-13 16:51:44,449 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:51:44,449 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-13 16:51:44,449 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:51:44,500 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-13 16:51:44,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 128 flow [2024-10-13 16:51:44,564 INFO L124 PetriNetUnfolderBase]: 4/46 cut-off events. [2024-10-13 16:51:44,566 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 16:51:44,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 46 events. 4/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 115 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-10-13 16:51:44,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 128 flow [2024-10-13 16:51:44,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 109 flow [2024-10-13 16:51:44,581 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:51:44,588 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;@2e248f9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:51:44,588 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-10-13 16:51:44,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:51:44,594 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-10-13 16:51:44,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:51:44,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:44,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:51:44,595 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:51:44,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:44,600 INFO L85 PathProgramCache]: Analyzing trace with hash 464065349, now seen corresponding path program 1 times [2024-10-13 16:51:44,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:44,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308003097] [2024-10-13 16:51:44,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:44,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:44,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:44,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308003097] [2024-10-13 16:51:44,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308003097] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:44,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:44,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:51:44,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027907803] [2024-10-13 16:51:44,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:44,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:51:44,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:44,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:51:44,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:51:44,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-13 16:51:44,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:44,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:44,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-13 16:51:44,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:47,145 INFO L124 PetriNetUnfolderBase]: 25764/31176 cut-off events. [2024-10-13 16:51:47,146 INFO L125 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2024-10-13 16:51:47,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62441 conditions, 31176 events. 25764/31176 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 2173. Compared 132537 event pairs, 5100 based on Foata normal form. 39/13833 useless extension candidates. Maximal degree in co-relation 58536. Up to 30081 conditions per place. [2024-10-13 16:51:47,423 INFO L140 encePairwiseOnDemand]: 29/50 looper letters, 46 selfloop transitions, 7 changer transitions 1/62 dead transitions. [2024-10-13 16:51:47,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 271 flow [2024-10-13 16:51:47,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:51:47,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:51:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-13 16:51:47,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7066666666666667 [2024-10-13 16:51:47,433 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 109 flow. Second operand 3 states and 106 transitions. [2024-10-13 16:51:47,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 271 flow [2024-10-13 16:51:47,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 247 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-13 16:51:47,444 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 161 flow [2024-10-13 16:51:47,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2024-10-13 16:51:47,451 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2024-10-13 16:51:47,452 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 161 flow [2024-10-13 16:51:47,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:47,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:47,452 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:51:47,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:51:47,453 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:51:47,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:47,454 INFO L85 PathProgramCache]: Analyzing trace with hash 464065351, now seen corresponding path program 1 times [2024-10-13 16:51:47,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:47,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012983366] [2024-10-13 16:51:47,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:47,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:47,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:47,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:47,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012983366] [2024-10-13 16:51:47,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012983366] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:47,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:47,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:51:47,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65463649] [2024-10-13 16:51:47,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:47,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:51:47,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:47,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:51:47,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:51:47,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-13 16:51:47,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:47,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:47,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-13 16:51:47,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:49,755 INFO L124 PetriNetUnfolderBase]: 31030/38418 cut-off events. [2024-10-13 16:51:49,756 INFO L125 PetriNetUnfolderBase]: For 2339/2339 co-relation queries the response was YES. [2024-10-13 16:51:49,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103651 conditions, 38418 events. 31030/38418 cut-off events. For 2339/2339 co-relation queries the response was YES. Maximal size of possible extension queue 2973. Compared 188017 event pairs, 12297 based on Foata normal form. 0/17730 useless extension candidates. Maximal degree in co-relation 46525. Up to 26985 conditions per place. [2024-10-13 16:51:50,246 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 65 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-10-13 16:51:50,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 76 transitions, 386 flow [2024-10-13 16:51:50,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:51:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:51:50,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-13 16:51:50,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-10-13 16:51:50,253 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 161 flow. Second operand 3 states and 102 transitions. [2024-10-13 16:51:50,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 76 transitions, 386 flow [2024-10-13 16:51:50,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:51:50,261 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 165 flow [2024-10-13 16:51:50,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-10-13 16:51:50,261 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -4 predicate places. [2024-10-13 16:51:50,262 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 165 flow [2024-10-13 16:51:50,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:50,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:50,266 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-13 16:51:50,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:51:50,267 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:51:50,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:50,268 INFO L85 PathProgramCache]: Analyzing trace with hash -709779765, now seen corresponding path program 1 times [2024-10-13 16:51:50,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:50,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947449138] [2024-10-13 16:51:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:50,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:50,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:50,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947449138] [2024-10-13 16:51:50,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947449138] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:50,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619429437] [2024-10-13 16:51:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:50,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:50,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:50,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:50,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:51:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:50,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:51:50,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:50,457 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:51:50,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619429437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:50,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:51:50,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-13 16:51:50,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025760791] [2024-10-13 16:51:50,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:50,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:51:50,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:50,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:51:50,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:51:50,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-13 16:51:50,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:50,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:50,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-13 16:51:50,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:52,917 INFO L124 PetriNetUnfolderBase]: 36670/45828 cut-off events. [2024-10-13 16:51:52,917 INFO L125 PetriNetUnfolderBase]: For 7771/8160 co-relation queries the response was YES. [2024-10-13 16:51:52,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126973 conditions, 45828 events. 36670/45828 cut-off events. For 7771/8160 co-relation queries the response was YES. Maximal size of possible extension queue 3502. Compared 241019 event pairs, 6474 based on Foata normal form. 0/23705 useless extension candidates. Maximal degree in co-relation 36961. Up to 31431 conditions per place. [2024-10-13 16:51:53,170 INFO L140 encePairwiseOnDemand]: 31/50 looper letters, 46 selfloop transitions, 22 changer transitions 0/76 dead transitions. [2024-10-13 16:51:53,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 76 transitions, 405 flow [2024-10-13 16:51:53,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:51:53,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:51:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-10-13 16:51:53,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-10-13 16:51:53,172 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 165 flow. Second operand 4 states and 114 transitions. [2024-10-13 16:51:53,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 76 transitions, 405 flow [2024-10-13 16:51:53,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:51:53,178 INFO L231 Difference]: Finished difference. Result has 51 places, 62 transitions, 351 flow [2024-10-13 16:51:53,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=51, PETRI_TRANSITIONS=62} [2024-10-13 16:51:53,179 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2024-10-13 16:51:53,179 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 62 transitions, 351 flow [2024-10-13 16:51:53,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:53,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:53,179 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-13 16:51:53,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:51:53,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:53,381 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:51:53,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:53,382 INFO L85 PathProgramCache]: Analyzing trace with hash -709779764, now seen corresponding path program 1 times [2024-10-13 16:51:53,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:53,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48313825] [2024-10-13 16:51:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:53,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:53,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:53,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48313825] [2024-10-13 16:51:53,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48313825] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:53,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430472094] [2024-10-13 16:51:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:53,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:53,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:53,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:53,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:51:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:53,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:51:53,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:53,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:53,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430472094] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:53,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:53,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-13 16:51:53,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044185323] [2024-10-13 16:51:53,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:53,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:51:53,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:53,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:51:53,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:51:53,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-13 16:51:53,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 62 transitions, 351 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:53,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:53,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-13 16:51:53,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:59,662 INFO L124 PetriNetUnfolderBase]: 79612/101219 cut-off events. [2024-10-13 16:51:59,663 INFO L125 PetriNetUnfolderBase]: For 71117/72523 co-relation queries the response was YES. [2024-10-13 16:51:59,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374601 conditions, 101219 events. 79612/101219 cut-off events. For 71117/72523 co-relation queries the response was YES. Maximal size of possible extension queue 5787. Compared 582781 event pairs, 5104 based on Foata normal form. 9996/72698 useless extension candidates. Maximal degree in co-relation 182925. Up to 64900 conditions per place. [2024-10-13 16:52:00,580 INFO L140 encePairwiseOnDemand]: 33/50 looper letters, 117 selfloop transitions, 52 changer transitions 0/177 dead transitions. [2024-10-13 16:52:00,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 177 transitions, 1287 flow [2024-10-13 16:52:00,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:52:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:52:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-10-13 16:52:00,582 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2024-10-13 16:52:00,582 INFO L175 Difference]: Start difference. First operand has 51 places, 62 transitions, 351 flow. Second operand 6 states and 224 transitions. [2024-10-13 16:52:00,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 177 transitions, 1287 flow [2024-10-13 16:52:00,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 177 transitions, 1174 flow, removed 56 selfloop flow, removed 1 redundant places. [2024-10-13 16:52:00,630 INFO L231 Difference]: Finished difference. Result has 59 places, 109 transitions, 928 flow [2024-10-13 16:52:00,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=928, PETRI_PLACES=59, PETRI_TRANSITIONS=109} [2024-10-13 16:52:00,631 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-10-13 16:52:00,631 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 109 transitions, 928 flow [2024-10-13 16:52:00,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:00,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:00,632 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-13 16:52:00,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:52:00,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-13 16:52:00,836 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:52:00,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash -709779762, now seen corresponding path program 1 times [2024-10-13 16:52:00,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:00,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160675428] [2024-10-13 16:52:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:00,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:00,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:00,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160675428] [2024-10-13 16:52:00,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160675428] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:00,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735321075] [2024-10-13 16:52:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:00,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:00,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:00,896 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:52:00,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:52:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:00,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:52:00,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:00,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:00,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:00,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735321075] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:52:00,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:52:00,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-13 16:52:00,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153956844] [2024-10-13 16:52:00,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:52:00,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:52:00,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:00,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:52:00,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:52:00,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-13 16:52:00,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 109 transitions, 928 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:00,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:00,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-13 16:52:00,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:15,269 INFO L124 PetriNetUnfolderBase]: 163657/207735 cut-off events. [2024-10-13 16:52:15,270 INFO L125 PetriNetUnfolderBase]: For 321648/321648 co-relation queries the response was YES. [2024-10-13 16:52:16,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922359 conditions, 207735 events. 163657/207735 cut-off events. For 321648/321648 co-relation queries the response was YES. Maximal size of possible extension queue 11085. Compared 1274818 event pairs, 21638 based on Foata normal form. 0/134520 useless extension candidates. Maximal degree in co-relation 597335. Up to 71130 conditions per place. [2024-10-13 16:52:17,219 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 414 selfloop transitions, 58 changer transitions 0/480 dead transitions. [2024-10-13 16:52:17,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 480 transitions, 5001 flow [2024-10-13 16:52:17,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:52:17,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:52:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 256 transitions. [2024-10-13 16:52:17,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7314285714285714 [2024-10-13 16:52:17,221 INFO L175 Difference]: Start difference. First operand has 59 places, 109 transitions, 928 flow. Second operand 7 states and 256 transitions. [2024-10-13 16:52:17,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 480 transitions, 5001 flow [2024-10-13 16:52:32,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 480 transitions, 4889 flow, removed 56 selfloop flow, removed 0 redundant places. [2024-10-13 16:52:33,001 INFO L231 Difference]: Finished difference. Result has 68 places, 151 transitions, 1574 flow [2024-10-13 16:52:33,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1574, PETRI_PLACES=68, PETRI_TRANSITIONS=151} [2024-10-13 16:52:33,002 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-10-13 16:52:33,003 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 151 transitions, 1574 flow [2024-10-13 16:52:33,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:33,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:33,004 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-13 16:52:33,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:52:33,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:33,205 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-13 16:52:33,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:33,206 INFO L85 PathProgramCache]: Analyzing trace with hash -709779763, now seen corresponding path program 1 times [2024-10-13 16:52:33,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:33,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699515942] [2024-10-13 16:52:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:33,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:33,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:33,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699515942] [2024-10-13 16:52:33,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699515942] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:33,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549953947] [2024-10-13 16:52:33,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:33,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:33,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:33,235 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:52:33,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:52:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:33,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:52:33,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:33,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:52:33,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549953947] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:33,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:52:33,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-13 16:52:33,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989102618] [2024-10-13 16:52:33,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:33,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:52:33,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:33,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:52:33,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:52:33,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-13 16:52:33,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 151 transitions, 1574 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:33,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:33,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-13 16:52:33,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand