./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.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 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 02:00:26,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 02:00:26,995 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 02:00:27,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 02:00:27,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 02:00:27,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 02:00:27,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 02:00:27,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 02:00:27,053 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 02:00:27,053 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 02:00:27,054 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 02:00:27,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 02:00:27,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 02:00:27,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 02:00:27,055 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 02:00:27,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 02:00:27,058 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 02:00:27,058 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 02:00:27,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 02:00:27,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 02:00:27,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 02:00:27,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 02:00:27,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 02:00:27,063 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 02:00:27,063 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 02:00:27,064 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 02:00:27,064 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 02:00:27,064 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 02:00:27,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 02:00:27,065 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 02:00:27,065 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 02:00:27,065 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 02:00:27,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 02:00:27,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 02:00:27,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 02:00:27,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 02:00:27,069 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 02:00:27,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 02:00:27,069 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 02:00:27,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 02:00:27,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 02:00:27,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 02:00:27,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 02:00:27,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 02:00:27,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-11-23 02:00:27,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 02:00:27,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 02:00:27,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 02:00:27,352 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 02:00:27,352 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 02:00:27,354 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-11-23 02:00:28,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 02:00:29,060 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 02:00:29,061 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-11-23 02:00:29,068 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cd54a157/266d0c6ec6a342cf9ecb20d38870a098/FLAGfe66d1192 [2024-11-23 02:00:29,441 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cd54a157/266d0c6ec6a342cf9ecb20d38870a098 [2024-11-23 02:00:29,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 02:00:29,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 02:00:29,446 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 02:00:29,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 02:00:29,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 02:00:29,451 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:00:29" (1/1) ... [2024-11-23 02:00:29,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53afde1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29, skipping insertion in model container [2024-11-23 02:00:29,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:00:29" (1/1) ... [2024-11-23 02:00:29,476 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 02:00:29,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:00:29,731 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 02:00:29,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:00:29,792 INFO L204 MainTranslator]: Completed translation [2024-11-23 02:00:29,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29 WrapperNode [2024-11-23 02:00:29,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 02:00:29,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 02:00:29,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 02:00:29,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 02:00:29,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29" (1/1) ... [2024-11-23 02:00:29,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29" (1/1) ... [2024-11-23 02:00:29,836 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 173 [2024-11-23 02:00:29,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 02:00:29,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 02:00:29,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 02:00:29,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 02:00:29,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29" (1/1) ... [2024-11-23 02:00:29,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29" (1/1) ... [2024-11-23 02:00:29,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29" (1/1) ... [2024-11-23 02:00:29,865 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-23 02:00:29,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29" (1/1) ... [2024-11-23 02:00:29,866 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29" (1/1) ... [2024-11-23 02:00:29,873 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29" (1/1) ... [2024-11-23 02:00:29,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29" (1/1) ... [2024-11-23 02:00:29,883 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29" (1/1) ... [2024-11-23 02:00:29,884 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29" (1/1) ... [2024-11-23 02:00:29,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 02:00:29,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 02:00:29,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 02:00:29,888 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 02:00:29,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29" (1/1) ... [2024-11-23 02:00:29,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 02:00:29,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:29,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 02:00:29,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 02:00:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 02:00:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 02:00:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 02:00:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 02:00:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 02:00:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 02:00:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 02:00:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 02:00:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 02:00:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 02:00:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 02:00:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 02:00:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 02:00:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 02:00:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 02:00:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 02:00:29,977 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 02:00:30,096 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 02:00:30,099 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 02:00:30,393 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 02:00:30,393 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 02:00:30,690 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 02:00:30,690 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-23 02:00:30,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:00:30 BoogieIcfgContainer [2024-11-23 02:00:30,690 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 02:00:30,694 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 02:00:30,694 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 02:00:30,697 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 02:00:30,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:00:29" (1/3) ... [2024-11-23 02:00:30,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df8f574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:00:30, skipping insertion in model container [2024-11-23 02:00:30,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:29" (2/3) ... [2024-11-23 02:00:30,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df8f574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:00:30, skipping insertion in model container [2024-11-23 02:00:30,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:00:30" (3/3) ... [2024-11-23 02:00:30,701 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2024-11-23 02:00:30,718 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 02:00:30,718 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-23 02:00:30,719 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 02:00:30,781 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 02:00:30,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 102 flow [2024-11-23 02:00:30,849 INFO L124 PetriNetUnfolderBase]: 4/42 cut-off events. [2024-11-23 02:00:30,850 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 02:00:30,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 42 events. 4/42 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 113 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-23 02:00:30,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 102 flow [2024-11-23 02:00:30,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 89 flow [2024-11-23 02:00:30,875 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 02:00:30,881 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;@a0d4868, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 02:00:30,881 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-23 02:00:30,886 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 02:00:30,886 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 02:00:30,886 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 02:00:30,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:30,887 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 02:00:30,887 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:30,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:30,894 INFO L85 PathProgramCache]: Analyzing trace with hash 538953, now seen corresponding path program 1 times [2024-11-23 02:00:30,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:30,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167860126] [2024-11-23 02:00:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:30,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:31,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:31,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167860126] [2024-11-23 02:00:31,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167860126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:31,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:31,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:00:31,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500429036] [2024-11-23 02:00:31,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:31,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:31,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:31,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:31,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:31,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-23 02:00:31,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:31,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:31,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-23 02:00:31,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:31,510 INFO L124 PetriNetUnfolderBase]: 177/396 cut-off events. [2024-11-23 02:00:31,511 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-23 02:00:31,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 396 events. 177/396 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2016 event pairs, 154 based on Foata normal form. 20/310 useless extension candidates. Maximal degree in co-relation 679. Up to 308 conditions per place. [2024-11-23 02:00:31,520 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 24 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2024-11-23 02:00:31,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 143 flow [2024-11-23 02:00:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-23 02:00:31,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2024-11-23 02:00:31,535 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 89 flow. Second operand 4 states and 86 transitions. [2024-11-23 02:00:31,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 143 flow [2024-11-23 02:00:31,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 138 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:00:31,540 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 105 flow [2024-11-23 02:00:31,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-11-23 02:00:31,551 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2024-11-23 02:00:31,551 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 105 flow [2024-11-23 02:00:31,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:31,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:31,551 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-23 02:00:31,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 02:00:31,552 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:31,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:31,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1123384291, now seen corresponding path program 1 times [2024-11-23 02:00:31,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:31,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049388616] [2024-11-23 02:00:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:31,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:31,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:31,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049388616] [2024-11-23 02:00:31,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049388616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:31,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255687393] [2024-11-23 02:00:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:31,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:31,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:31,697 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:00:31,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 02:00:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:31,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:00:31,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:31,828 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 02:00:31,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255687393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:31,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 02:00:31,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 02:00:31,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96959909] [2024-11-23 02:00:31,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:31,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:00:31,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:31,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:00:31,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 02:00:31,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-23 02:00:31,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 105 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:31,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:31,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-23 02:00:31,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:32,056 INFO L124 PetriNetUnfolderBase]: 177/395 cut-off events. [2024-11-23 02:00:32,056 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 02:00:32,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 395 events. 177/395 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2040 event pairs, 154 based on Foata normal form. 1/291 useless extension candidates. Maximal degree in co-relation 711. Up to 303 conditions per place. [2024-11-23 02:00:32,062 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 20 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2024-11-23 02:00:32,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 155 flow [2024-11-23 02:00:32,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 02:00:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 02:00:32,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-11-23 02:00:32,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-11-23 02:00:32,067 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 105 flow. Second operand 6 states and 106 transitions. [2024-11-23 02:00:32,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 155 flow [2024-11-23 02:00:32,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 38 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:00:32,070 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 112 flow [2024-11-23 02:00:32,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-11-23 02:00:32,072 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-11-23 02:00:32,073 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 112 flow [2024-11-23 02:00:32,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:32,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:32,075 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 02:00:32,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 02:00:32,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:32,279 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:32,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:32,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1121530112, now seen corresponding path program 1 times [2024-11-23 02:00:32,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:32,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105688354] [2024-11-23 02:00:32,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:32,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:32,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:32,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105688354] [2024-11-23 02:00:32,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105688354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:32,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:32,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:00:32,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349739366] [2024-11-23 02:00:32,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:32,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:32,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:32,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:32,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-23 02:00:32,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:32,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:32,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-23 02:00:32,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:32,544 INFO L124 PetriNetUnfolderBase]: 189/430 cut-off events. [2024-11-23 02:00:32,544 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-23 02:00:32,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 430 events. 189/430 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2151 event pairs, 167 based on Foata normal form. 14/350 useless extension candidates. Maximal degree in co-relation 713. Up to 305 conditions per place. [2024-11-23 02:00:32,550 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 23 selfloop transitions, 2 changer transitions 8/45 dead transitions. [2024-11-23 02:00:32,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 195 flow [2024-11-23 02:00:32,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:32,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:32,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-11-23 02:00:32,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-23 02:00:32,554 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 112 flow. Second operand 4 states and 99 transitions. [2024-11-23 02:00:32,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 195 flow [2024-11-23 02:00:32,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 173 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-23 02:00:32,557 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 104 flow [2024-11-23 02:00:32,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-11-23 02:00:32,559 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-11-23 02:00:32,559 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 104 flow [2024-11-23 02:00:32,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:32,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:32,560 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 02:00:32,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 02:00:32,560 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:32,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash -465174113, now seen corresponding path program 1 times [2024-11-23 02:00:32,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:32,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55601420] [2024-11-23 02:00:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:32,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:32,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:32,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55601420] [2024-11-23 02:00:32,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55601420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:32,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421246596] [2024-11-23 02:00:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:32,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:32,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:32,637 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:00:32,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 02:00:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:32,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:00:32,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:32,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:32,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:32,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421246596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:32,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:32,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 02:00:32,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768723030] [2024-11-23 02:00:32,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:32,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 02:00:32,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:32,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 02:00:32,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 02:00:32,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-23 02:00:32,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 104 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:32,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:32,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-23 02:00:32,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:32,959 INFO L124 PetriNetUnfolderBase]: 179/406 cut-off events. [2024-11-23 02:00:32,960 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-23 02:00:32,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 406 events. 179/406 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2099 event pairs, 154 based on Foata normal form. 3/302 useless extension candidates. Maximal degree in co-relation 837. Up to 309 conditions per place. [2024-11-23 02:00:32,963 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 23 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2024-11-23 02:00:32,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 204 flow [2024-11-23 02:00:32,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 02:00:32,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 02:00:32,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-11-23 02:00:32,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-11-23 02:00:32,966 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 104 flow. Second operand 10 states and 168 transitions. [2024-11-23 02:00:32,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 204 flow [2024-11-23 02:00:32,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 02:00:32,968 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 172 flow [2024-11-23 02:00:32,968 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=172, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-11-23 02:00:32,970 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-11-23 02:00:32,971 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 172 flow [2024-11-23 02:00:32,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:32,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:32,973 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:32,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 02:00:33,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-23 02:00:33,178 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:33,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:33,179 INFO L85 PathProgramCache]: Analyzing trace with hash -353852500, now seen corresponding path program 1 times [2024-11-23 02:00:33,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:33,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20127692] [2024-11-23 02:00:33,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:33,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:33,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:33,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20127692] [2024-11-23 02:00:33,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20127692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:33,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595947862] [2024-11-23 02:00:33,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:33,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:33,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:33,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:00:33,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 02:00:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:33,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 02:00:33,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:33,386 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 02:00:33,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595947862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:33,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 02:00:33,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-23 02:00:33,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142546824] [2024-11-23 02:00:33,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:33,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 02:00:33,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:33,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 02:00:33,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 02:00:33,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-23 02:00:33,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2024-11-23 02:00:33,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:33,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-23 02:00:33,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:33,436 INFO L124 PetriNetUnfolderBase]: 119/287 cut-off events. [2024-11-23 02:00:33,436 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-23 02:00:33,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 287 events. 119/287 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1303 event pairs, 98 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 560. Up to 214 conditions per place. [2024-11-23 02:00:33,438 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 30 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2024-11-23 02:00:33,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 222 flow [2024-11-23 02:00:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 02:00:33,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 02:00:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-11-23 02:00:33,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-11-23 02:00:33,440 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 172 flow. Second operand 3 states and 68 transitions. [2024-11-23 02:00:33,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 222 flow [2024-11-23 02:00:33,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 43 transitions, 212 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-23 02:00:33,442 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 152 flow [2024-11-23 02:00:33,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-11-23 02:00:33,443 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-11-23 02:00:33,443 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 152 flow [2024-11-23 02:00:33,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2024-11-23 02:00:33,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:33,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:33,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 02:00:33,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:33,645 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:33,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:33,645 INFO L85 PathProgramCache]: Analyzing trace with hash -749818321, now seen corresponding path program 1 times [2024-11-23 02:00:33,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:33,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576533299] [2024-11-23 02:00:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:33,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:33,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:33,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576533299] [2024-11-23 02:00:33,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576533299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:33,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:33,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:00:33,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484297346] [2024-11-23 02:00:33,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:33,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:33,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:33,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:33,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:33,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-23 02:00:33,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:33,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:33,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-23 02:00:33,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:33,808 INFO L124 PetriNetUnfolderBase]: 216/449 cut-off events. [2024-11-23 02:00:33,808 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-23 02:00:33,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 449 events. 216/449 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1991 event pairs, 109 based on Foata normal form. 12/418 useless extension candidates. Maximal degree in co-relation 921. Up to 281 conditions per place. [2024-11-23 02:00:33,812 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 47 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2024-11-23 02:00:33,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 61 transitions, 300 flow [2024-11-23 02:00:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-23 02:00:33,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-11-23 02:00:33,814 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 152 flow. Second operand 4 states and 94 transitions. [2024-11-23 02:00:33,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 61 transitions, 300 flow [2024-11-23 02:00:33,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:00:33,816 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 180 flow [2024-11-23 02:00:33,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-11-23 02:00:33,817 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-11-23 02:00:33,817 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 180 flow [2024-11-23 02:00:33,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:33,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:33,818 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:33,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 02:00:33,818 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:33,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:33,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1866347286, now seen corresponding path program 1 times [2024-11-23 02:00:33,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:33,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009987649] [2024-11-23 02:00:33,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:33,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:33,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:33,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009987649] [2024-11-23 02:00:33,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009987649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:33,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:33,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:00:33,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974836406] [2024-11-23 02:00:33,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:33,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 02:00:33,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:33,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 02:00:33,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 02:00:33,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-23 02:00:33,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:33,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:33,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-23 02:00:33,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:33,941 INFO L124 PetriNetUnfolderBase]: 165/402 cut-off events. [2024-11-23 02:00:33,941 INFO L125 PetriNetUnfolderBase]: For 142/145 co-relation queries the response was YES. [2024-11-23 02:00:33,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 402 events. 165/402 cut-off events. For 142/145 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1823 event pairs, 52 based on Foata normal form. 3/371 useless extension candidates. Maximal degree in co-relation 912. Up to 238 conditions per place. [2024-11-23 02:00:33,944 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 37 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2024-11-23 02:00:33,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 278 flow [2024-11-23 02:00:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 02:00:33,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 02:00:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-23 02:00:33,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.553030303030303 [2024-11-23 02:00:33,946 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 180 flow. Second operand 3 states and 73 transitions. [2024-11-23 02:00:33,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 278 flow [2024-11-23 02:00:33,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:00:33,950 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 200 flow [2024-11-23 02:00:33,952 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-11-23 02:00:33,953 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-11-23 02:00:33,953 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 200 flow [2024-11-23 02:00:33,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:33,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:33,953 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:33,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 02:00:33,953 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:33,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:33,954 INFO L85 PathProgramCache]: Analyzing trace with hash 422681287, now seen corresponding path program 1 times [2024-11-23 02:00:33,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:33,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857913129] [2024-11-23 02:00:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:33,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:34,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:34,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857913129] [2024-11-23 02:00:34,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857913129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:34,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069074565] [2024-11-23 02:00:34,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:34,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:34,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:34,416 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:00:34,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 02:00:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:34,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 02:00:34,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:34,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 02:00:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:34,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:35,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2024-11-23 02:00:35,285 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 02:00:35,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 41 [2024-11-23 02:00:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:35,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069074565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:35,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:35,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-23 02:00:35,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285630118] [2024-11-23 02:00:35,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:35,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 02:00:35,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:35,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 02:00:35,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2024-11-23 02:00:35,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-23 02:00:35,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 200 flow. Second operand has 23 states, 23 states have (on average 9.695652173913043) internal successors, (223), 23 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:35,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:35,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-23 02:00:35,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:37,215 INFO L124 PetriNetUnfolderBase]: 992/1946 cut-off events. [2024-11-23 02:00:37,215 INFO L125 PetriNetUnfolderBase]: For 1087/1145 co-relation queries the response was YES. [2024-11-23 02:00:37,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4830 conditions, 1946 events. 992/1946 cut-off events. For 1087/1145 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 11091 event pairs, 179 based on Foata normal form. 0/1757 useless extension candidates. Maximal degree in co-relation 4814. Up to 377 conditions per place. [2024-11-23 02:00:37,229 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 147 selfloop transitions, 41 changer transitions 25/219 dead transitions. [2024-11-23 02:00:37,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 219 transitions, 1216 flow [2024-11-23 02:00:37,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 02:00:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-23 02:00:37,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 366 transitions. [2024-11-23 02:00:37,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.378099173553719 [2024-11-23 02:00:37,232 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 200 flow. Second operand 22 states and 366 transitions. [2024-11-23 02:00:37,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 219 transitions, 1216 flow [2024-11-23 02:00:37,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 219 transitions, 1141 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-11-23 02:00:37,240 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 449 flow [2024-11-23 02:00:37,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=449, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2024-11-23 02:00:37,241 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 41 predicate places. [2024-11-23 02:00:37,242 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 449 flow [2024-11-23 02:00:37,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.695652173913043) internal successors, (223), 23 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:37,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:37,243 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:37,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 02:00:37,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:37,444 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:37,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:37,444 INFO L85 PathProgramCache]: Analyzing trace with hash 416425177, now seen corresponding path program 2 times [2024-11-23 02:00:37,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:37,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989541833] [2024-11-23 02:00:37,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:37,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:37,466 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:37,466 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:37,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:37,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989541833] [2024-11-23 02:00:37,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989541833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:37,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:37,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:00:37,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023070052] [2024-11-23 02:00:37,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:37,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:00:37,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:37,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:00:37,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:00:37,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-23 02:00:37,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 449 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:37,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:37,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-23 02:00:37,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:37,856 INFO L124 PetriNetUnfolderBase]: 879/1849 cut-off events. [2024-11-23 02:00:37,856 INFO L125 PetriNetUnfolderBase]: For 2420/2470 co-relation queries the response was YES. [2024-11-23 02:00:37,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 1849 events. 879/1849 cut-off events. For 2420/2470 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 11074 event pairs, 330 based on Foata normal form. 30/1869 useless extension candidates. Maximal degree in co-relation 5300. Up to 1333 conditions per place. [2024-11-23 02:00:37,868 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 66 selfloop transitions, 6 changer transitions 17/105 dead transitions. [2024-11-23 02:00:37,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 105 transitions, 709 flow [2024-11-23 02:00:37,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 02:00:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 02:00:37,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-11-23 02:00:37,870 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-11-23 02:00:37,870 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 449 flow. Second operand 6 states and 117 transitions. [2024-11-23 02:00:37,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 105 transitions, 709 flow [2024-11-23 02:00:37,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 105 transitions, 676 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-23 02:00:37,884 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 444 flow [2024-11-23 02:00:37,884 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2024-11-23 02:00:37,885 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-11-23 02:00:37,885 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 444 flow [2024-11-23 02:00:37,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:37,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:37,886 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:37,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 02:00:37,886 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:37,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:37,886 INFO L85 PathProgramCache]: Analyzing trace with hash 388593339, now seen corresponding path program 1 times [2024-11-23 02:00:37,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:37,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386369299] [2024-11-23 02:00:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:37,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:38,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:38,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386369299] [2024-11-23 02:00:38,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386369299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:38,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572607212] [2024-11-23 02:00:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:38,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:38,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:38,268 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:00:38,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 02:00:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:38,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 02:00:38,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:38,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 02:00:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:38,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:38,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2024-11-23 02:00:38,994 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 02:00:38,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 41 [2024-11-23 02:00:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:39,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572607212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:39,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:39,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-23 02:00:39,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852589508] [2024-11-23 02:00:39,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:39,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 02:00:39,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:39,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 02:00:39,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2024-11-23 02:00:39,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-23 02:00:39,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 444 flow. Second operand has 23 states, 23 states have (on average 10.565217391304348) internal successors, (243), 23 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:39,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:39,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-23 02:00:39,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:40,755 INFO L124 PetriNetUnfolderBase]: 1351/2745 cut-off events. [2024-11-23 02:00:40,755 INFO L125 PetriNetUnfolderBase]: For 4631/4771 co-relation queries the response was YES. [2024-11-23 02:00:40,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7978 conditions, 2745 events. 1351/2745 cut-off events. For 4631/4771 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17077 event pairs, 272 based on Foata normal form. 214/2956 useless extension candidates. Maximal degree in co-relation 7950. Up to 432 conditions per place. [2024-11-23 02:00:40,773 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 172 selfloop transitions, 58 changer transitions 1/238 dead transitions. [2024-11-23 02:00:40,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 238 transitions, 1643 flow [2024-11-23 02:00:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-23 02:00:40,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-23 02:00:40,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 338 transitions. [2024-11-23 02:00:40,776 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4043062200956938 [2024-11-23 02:00:40,776 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 444 flow. Second operand 19 states and 338 transitions. [2024-11-23 02:00:40,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 238 transitions, 1643 flow [2024-11-23 02:00:40,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 238 transitions, 1605 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-23 02:00:40,794 INFO L231 Difference]: Finished difference. Result has 108 places, 114 transitions, 904 flow [2024-11-23 02:00:40,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=904, PETRI_PLACES=108, PETRI_TRANSITIONS=114} [2024-11-23 02:00:40,796 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 65 predicate places. [2024-11-23 02:00:40,797 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 114 transitions, 904 flow [2024-11-23 02:00:40,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.565217391304348) internal successors, (243), 23 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:40,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:40,797 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-23 02:00:40,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 02:00:40,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 02:00:40,998 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:40,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:40,999 INFO L85 PathProgramCache]: Analyzing trace with hash -729795853, now seen corresponding path program 2 times [2024-11-23 02:00:40,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:40,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259944006] [2024-11-23 02:00:40,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:40,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:41,009 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:41,010 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 02:00:41,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:41,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259944006] [2024-11-23 02:00:41,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259944006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:41,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368066045] [2024-11-23 02:00:41,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:41,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:41,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:41,037 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:00:41,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 02:00:41,094 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:41,094 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:41,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 02:00:41,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 02:00:41,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:41,139 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 02:00:41,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368066045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:41,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:41,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-23 02:00:41,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416393015] [2024-11-23 02:00:41,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:41,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:41,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:41,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:41,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:41,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-23 02:00:41,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 114 transitions, 904 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:41,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:41,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-23 02:00:41,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:41,424 INFO L124 PetriNetUnfolderBase]: 911/2259 cut-off events. [2024-11-23 02:00:41,425 INFO L125 PetriNetUnfolderBase]: For 8621/8771 co-relation queries the response was YES. [2024-11-23 02:00:41,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7833 conditions, 2259 events. 911/2259 cut-off events. For 8621/8771 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 15776 event pairs, 596 based on Foata normal form. 13/2217 useless extension candidates. Maximal degree in co-relation 7796. Up to 1531 conditions per place. [2024-11-23 02:00:41,448 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 70 selfloop transitions, 15 changer transitions 0/113 dead transitions. [2024-11-23 02:00:41,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 113 transitions, 1064 flow [2024-11-23 02:00:41,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:41,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:41,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-11-23 02:00:41,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-11-23 02:00:41,449 INFO L175 Difference]: Start difference. First operand has 108 places, 114 transitions, 904 flow. Second operand 4 states and 73 transitions. [2024-11-23 02:00:41,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 113 transitions, 1064 flow [2024-11-23 02:00:41,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 113 transitions, 1005 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-11-23 02:00:41,514 INFO L231 Difference]: Finished difference. Result has 100 places, 113 transitions, 865 flow [2024-11-23 02:00:41,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=865, PETRI_PLACES=100, PETRI_TRANSITIONS=113} [2024-11-23 02:00:41,515 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2024-11-23 02:00:41,515 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 113 transitions, 865 flow [2024-11-23 02:00:41,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:41,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:41,515 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:41,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 02:00:41,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:41,716 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:41,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:41,717 INFO L85 PathProgramCache]: Analyzing trace with hash -561451507, now seen corresponding path program 1 times [2024-11-23 02:00:41,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:41,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077288479] [2024-11-23 02:00:41,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:41,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:42,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:42,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077288479] [2024-11-23 02:00:42,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077288479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:42,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719416724] [2024-11-23 02:00:42,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:42,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:42,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:42,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:00:42,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 02:00:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:42,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 02:00:42,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:42,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 02:00:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:42,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:42,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2024-11-23 02:00:42,777 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 02:00:42,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2024-11-23 02:00:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:42,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719416724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:42,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:42,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-23 02:00:42,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50202097] [2024-11-23 02:00:42,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:42,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 02:00:42,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:42,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 02:00:42,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2024-11-23 02:00:42,978 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-23 02:00:42,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 113 transitions, 865 flow. Second operand has 23 states, 23 states have (on average 11.565217391304348) internal successors, (266), 23 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:42,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:42,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-23 02:00:42,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:44,402 INFO L124 PetriNetUnfolderBase]: 1635/3636 cut-off events. [2024-11-23 02:00:44,402 INFO L125 PetriNetUnfolderBase]: For 13852/14036 co-relation queries the response was YES. [2024-11-23 02:00:44,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12579 conditions, 3636 events. 1635/3636 cut-off events. For 13852/14036 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 25695 event pairs, 333 based on Foata normal form. 127/3724 useless extension candidates. Maximal degree in co-relation 12546. Up to 741 conditions per place. [2024-11-23 02:00:44,443 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 160 selfloop transitions, 72 changer transitions 2/259 dead transitions. [2024-11-23 02:00:44,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 259 transitions, 2195 flow [2024-11-23 02:00:44,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 02:00:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-23 02:00:44,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 317 transitions. [2024-11-23 02:00:44,447 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42379679144385024 [2024-11-23 02:00:44,447 INFO L175 Difference]: Start difference. First operand has 100 places, 113 transitions, 865 flow. Second operand 17 states and 317 transitions. [2024-11-23 02:00:44,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 259 transitions, 2195 flow [2024-11-23 02:00:44,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 259 transitions, 2165 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:00:44,485 INFO L231 Difference]: Finished difference. Result has 119 places, 145 transitions, 1427 flow [2024-11-23 02:00:44,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1427, PETRI_PLACES=119, PETRI_TRANSITIONS=145} [2024-11-23 02:00:44,486 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 76 predicate places. [2024-11-23 02:00:44,486 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 145 transitions, 1427 flow [2024-11-23 02:00:44,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.565217391304348) internal successors, (266), 23 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:44,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:44,487 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:44,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 02:00:44,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:44,687 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:44,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:44,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1757729257, now seen corresponding path program 1 times [2024-11-23 02:00:44,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:44,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430880528] [2024-11-23 02:00:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:44,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:44,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:44,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430880528] [2024-11-23 02:00:44,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430880528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:44,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954334453] [2024-11-23 02:00:44,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:44,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:44,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:44,814 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:00:44,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 02:00:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:44,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 02:00:44,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:44,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:45,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954334453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:45,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:45,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-23 02:00:45,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033360587] [2024-11-23 02:00:45,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:45,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 02:00:45,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:45,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 02:00:45,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-23 02:00:45,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-23 02:00:45,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 145 transitions, 1427 flow. Second operand has 15 states, 15 states have (on average 14.8) internal successors, (222), 15 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:45,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:45,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-23 02:00:45,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:45,256 INFO L124 PetriNetUnfolderBase]: 315/780 cut-off events. [2024-11-23 02:00:45,256 INFO L125 PetriNetUnfolderBase]: For 3944/3974 co-relation queries the response was YES. [2024-11-23 02:00:45,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 780 events. 315/780 cut-off events. For 3944/3974 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4571 event pairs, 212 based on Foata normal form. 62/813 useless extension candidates. Maximal degree in co-relation 2758. Up to 305 conditions per place. [2024-11-23 02:00:45,260 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 48 selfloop transitions, 13 changer transitions 2/79 dead transitions. [2024-11-23 02:00:45,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 79 transitions, 661 flow [2024-11-23 02:00:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 02:00:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 02:00:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-11-23 02:00:45,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-11-23 02:00:45,262 INFO L175 Difference]: Start difference. First operand has 119 places, 145 transitions, 1427 flow. Second operand 8 states and 149 transitions. [2024-11-23 02:00:45,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 79 transitions, 661 flow [2024-11-23 02:00:45,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 79 transitions, 554 flow, removed 22 selfloop flow, removed 25 redundant places. [2024-11-23 02:00:45,273 INFO L231 Difference]: Finished difference. Result has 92 places, 66 transitions, 415 flow [2024-11-23 02:00:45,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=415, PETRI_PLACES=92, PETRI_TRANSITIONS=66} [2024-11-23 02:00:45,273 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2024-11-23 02:00:45,274 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 66 transitions, 415 flow [2024-11-23 02:00:45,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.8) internal successors, (222), 15 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:45,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:45,274 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:45,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 02:00:45,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 02:00:45,478 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:45,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:45,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1700886909, now seen corresponding path program 2 times [2024-11-23 02:00:45,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:45,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842957749] [2024-11-23 02:00:45,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:45,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:45,503 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:45,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:45,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:45,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842957749] [2024-11-23 02:00:45,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842957749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:45,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:45,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:00:45,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790747706] [2024-11-23 02:00:45,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:45,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:00:45,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:45,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:00:45,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:00:45,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-23 02:00:45,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 66 transitions, 415 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 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) [2024-11-23 02:00:45,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:45,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-23 02:00:45,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:45,810 INFO L124 PetriNetUnfolderBase]: 484/1157 cut-off events. [2024-11-23 02:00:45,810 INFO L125 PetriNetUnfolderBase]: For 2727/2753 co-relation queries the response was YES. [2024-11-23 02:00:45,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3625 conditions, 1157 events. 484/1157 cut-off events. For 2727/2753 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7257 event pairs, 41 based on Foata normal form. 34/1187 useless extension candidates. Maximal degree in co-relation 3600. Up to 464 conditions per place. [2024-11-23 02:00:45,818 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 79 selfloop transitions, 13 changer transitions 2/107 dead transitions. [2024-11-23 02:00:45,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 107 transitions, 822 flow [2024-11-23 02:00:45,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 02:00:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 02:00:45,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-11-23 02:00:45,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5265151515151515 [2024-11-23 02:00:45,820 INFO L175 Difference]: Start difference. First operand has 92 places, 66 transitions, 415 flow. Second operand 6 states and 139 transitions. [2024-11-23 02:00:45,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 107 transitions, 822 flow [2024-11-23 02:00:45,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 107 transitions, 766 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-11-23 02:00:45,829 INFO L231 Difference]: Finished difference. Result has 91 places, 70 transitions, 452 flow [2024-11-23 02:00:45,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=91, PETRI_TRANSITIONS=70} [2024-11-23 02:00:45,830 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-11-23 02:00:45,830 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 70 transitions, 452 flow [2024-11-23 02:00:45,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 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) [2024-11-23 02:00:45,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:45,831 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:45,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 02:00:45,831 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:45,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:45,831 INFO L85 PathProgramCache]: Analyzing trace with hash -946452581, now seen corresponding path program 3 times [2024-11-23 02:00:45,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:45,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151583571] [2024-11-23 02:00:45,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 02:00:45,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:45,850 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-23 02:00:45,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:45,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:45,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151583571] [2024-11-23 02:00:45,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151583571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:45,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:45,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:00:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891120150] [2024-11-23 02:00:45,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:45,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:00:45,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:45,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:00:45,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:00:45,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-23 02:00:45,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 70 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:45,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:45,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-23 02:00:45,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:46,119 INFO L124 PetriNetUnfolderBase]: 579/1297 cut-off events. [2024-11-23 02:00:46,120 INFO L125 PetriNetUnfolderBase]: For 2939/2940 co-relation queries the response was YES. [2024-11-23 02:00:46,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4195 conditions, 1297 events. 579/1297 cut-off events. For 2939/2940 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8015 event pairs, 276 based on Foata normal form. 10/1301 useless extension candidates. Maximal degree in co-relation 4170. Up to 887 conditions per place. [2024-11-23 02:00:46,125 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 61 selfloop transitions, 6 changer transitions 5/84 dead transitions. [2024-11-23 02:00:46,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 84 transitions, 636 flow [2024-11-23 02:00:46,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:00:46,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:00:46,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-11-23 02:00:46,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4727272727272727 [2024-11-23 02:00:46,126 INFO L175 Difference]: Start difference. First operand has 91 places, 70 transitions, 452 flow. Second operand 5 states and 104 transitions. [2024-11-23 02:00:46,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 84 transitions, 636 flow [2024-11-23 02:00:46,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 84 transitions, 623 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-23 02:00:46,133 INFO L231 Difference]: Finished difference. Result has 95 places, 70 transitions, 456 flow [2024-11-23 02:00:46,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=456, PETRI_PLACES=95, PETRI_TRANSITIONS=70} [2024-11-23 02:00:46,134 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-11-23 02:00:46,134 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 70 transitions, 456 flow [2024-11-23 02:00:46,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:46,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:46,135 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:46,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 02:00:46,135 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:46,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:46,135 INFO L85 PathProgramCache]: Analyzing trace with hash -587292285, now seen corresponding path program 3 times [2024-11-23 02:00:46,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:46,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433635736] [2024-11-23 02:00:46,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 02:00:46,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:46,157 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-23 02:00:46,159 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:46,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:46,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433635736] [2024-11-23 02:00:46,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433635736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:46,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:46,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:00:46,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253012869] [2024-11-23 02:00:46,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:46,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:00:46,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:46,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:00:46,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:00:46,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-23 02:00:46,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 70 transitions, 456 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 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) [2024-11-23 02:00:46,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:46,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-23 02:00:46,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:46,427 INFO L124 PetriNetUnfolderBase]: 533/1309 cut-off events. [2024-11-23 02:00:46,428 INFO L125 PetriNetUnfolderBase]: For 3146/3178 co-relation queries the response was YES. [2024-11-23 02:00:46,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4257 conditions, 1309 events. 533/1309 cut-off events. For 3146/3178 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8169 event pairs, 71 based on Foata normal form. 42/1344 useless extension candidates. Maximal degree in co-relation 4230. Up to 427 conditions per place. [2024-11-23 02:00:46,435 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 70 selfloop transitions, 13 changer transitions 2/98 dead transitions. [2024-11-23 02:00:46,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 98 transitions, 758 flow [2024-11-23 02:00:46,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:00:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:00:46,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-23 02:00:46,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5318181818181819 [2024-11-23 02:00:46,437 INFO L175 Difference]: Start difference. First operand has 95 places, 70 transitions, 456 flow. Second operand 5 states and 117 transitions. [2024-11-23 02:00:46,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 98 transitions, 758 flow [2024-11-23 02:00:46,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 747 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:00:46,449 INFO L231 Difference]: Finished difference. Result has 97 places, 71 transitions, 495 flow [2024-11-23 02:00:46,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=495, PETRI_PLACES=97, PETRI_TRANSITIONS=71} [2024-11-23 02:00:46,449 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-11-23 02:00:46,449 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 71 transitions, 495 flow [2024-11-23 02:00:46,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 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) [2024-11-23 02:00:46,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:46,451 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:46,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 02:00:46,452 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:46,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:46,452 INFO L85 PathProgramCache]: Analyzing trace with hash 731891473, now seen corresponding path program 1 times [2024-11-23 02:00:46,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:46,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894325192] [2024-11-23 02:00:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:46,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:47,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:47,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894325192] [2024-11-23 02:00:47,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894325192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:47,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126237169] [2024-11-23 02:00:47,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:47,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:47,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:47,133 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:00:47,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 02:00:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:47,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 02:00:47,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:47,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:47,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:00:47,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-23 02:00:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:47,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126237169] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:47,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 02:00:47,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 6] total 18 [2024-11-23 02:00:47,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548286495] [2024-11-23 02:00:47,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:47,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:00:47,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:47,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:00:47,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2024-11-23 02:00:47,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-23 02:00:47,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 71 transitions, 495 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:47,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:47,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-23 02:00:47,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:47,653 INFO L124 PetriNetUnfolderBase]: 610/1386 cut-off events. [2024-11-23 02:00:47,653 INFO L125 PetriNetUnfolderBase]: For 3964/3972 co-relation queries the response was YES. [2024-11-23 02:00:47,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4730 conditions, 1386 events. 610/1386 cut-off events. For 3964/3972 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8496 event pairs, 266 based on Foata normal form. 5/1363 useless extension candidates. Maximal degree in co-relation 4702. Up to 909 conditions per place. [2024-11-23 02:00:47,663 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 63 selfloop transitions, 6 changer transitions 9/90 dead transitions. [2024-11-23 02:00:47,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 90 transitions, 725 flow [2024-11-23 02:00:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:00:47,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:00:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-11-23 02:00:47,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-11-23 02:00:47,666 INFO L175 Difference]: Start difference. First operand has 97 places, 71 transitions, 495 flow. Second operand 5 states and 106 transitions. [2024-11-23 02:00:47,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 90 transitions, 725 flow [2024-11-23 02:00:47,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 90 transitions, 697 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-23 02:00:47,677 INFO L231 Difference]: Finished difference. Result has 98 places, 68 transitions, 464 flow [2024-11-23 02:00:47,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=464, PETRI_PLACES=98, PETRI_TRANSITIONS=68} [2024-11-23 02:00:47,678 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-11-23 02:00:47,678 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 68 transitions, 464 flow [2024-11-23 02:00:47,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:47,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:47,678 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:47,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 02:00:47,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 02:00:47,879 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:47,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:47,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1026191079, now seen corresponding path program 2 times [2024-11-23 02:00:47,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:47,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68227582] [2024-11-23 02:00:47,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:47,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:47,891 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:47,891 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:47,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:47,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:47,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68227582] [2024-11-23 02:00:47,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68227582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:47,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:47,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:00:47,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093933169] [2024-11-23 02:00:47,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:47,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:00:47,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:47,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:00:47,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:00:47,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-23 02:00:47,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 68 transitions, 464 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:47,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:47,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-23 02:00:47,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:48,166 INFO L124 PetriNetUnfolderBase]: 522/1219 cut-off events. [2024-11-23 02:00:48,166 INFO L125 PetriNetUnfolderBase]: For 3460/3496 co-relation queries the response was YES. [2024-11-23 02:00:48,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4153 conditions, 1219 events. 522/1219 cut-off events. For 3460/3496 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 7122 event pairs, 35 based on Foata normal form. 34/1251 useless extension candidates. Maximal degree in co-relation 4125. Up to 543 conditions per place. [2024-11-23 02:00:48,175 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 70 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2024-11-23 02:00:48,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 93 transitions, 744 flow [2024-11-23 02:00:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:00:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:00:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-11-23 02:00:48,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-11-23 02:00:48,176 INFO L175 Difference]: Start difference. First operand has 98 places, 68 transitions, 464 flow. Second operand 5 states and 107 transitions. [2024-11-23 02:00:48,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 93 transitions, 744 flow [2024-11-23 02:00:48,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 93 transitions, 715 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-23 02:00:48,186 INFO L231 Difference]: Finished difference. Result has 94 places, 69 transitions, 474 flow [2024-11-23 02:00:48,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=474, PETRI_PLACES=94, PETRI_TRANSITIONS=69} [2024-11-23 02:00:48,187 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2024-11-23 02:00:48,187 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 69 transitions, 474 flow [2024-11-23 02:00:48,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:48,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:48,187 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:48,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 02:00:48,188 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:48,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:48,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2030714987, now seen corresponding path program 2 times [2024-11-23 02:00:48,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:48,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506683941] [2024-11-23 02:00:48,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:48,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:48,199 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:00:48,200 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:48,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:48,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506683941] [2024-11-23 02:00:48,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506683941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:48,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336699500] [2024-11-23 02:00:48,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:48,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:48,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:48,254 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:00:48,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 02:00:48,323 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:00:48,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:48,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 02:00:48,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:48,350 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 02:00:48,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336699500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:48,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 02:00:48,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-23 02:00:48,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468508117] [2024-11-23 02:00:48,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:48,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 02:00:48,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 02:00:48,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-23 02:00:48,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-23 02:00:48,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 69 transitions, 474 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:48,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:48,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-23 02:00:48,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:48,527 INFO L124 PetriNetUnfolderBase]: 552/1210 cut-off events. [2024-11-23 02:00:48,528 INFO L125 PetriNetUnfolderBase]: For 4017/4043 co-relation queries the response was YES. [2024-11-23 02:00:48,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4305 conditions, 1210 events. 552/1210 cut-off events. For 4017/4043 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7177 event pairs, 115 based on Foata normal form. 33/1215 useless extension candidates. Maximal degree in co-relation 4280. Up to 384 conditions per place. [2024-11-23 02:00:48,536 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 92 selfloop transitions, 6 changer transitions 1/112 dead transitions. [2024-11-23 02:00:48,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 112 transitions, 1060 flow [2024-11-23 02:00:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-23 02:00:48,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2024-11-23 02:00:48,537 INFO L175 Difference]: Start difference. First operand has 94 places, 69 transitions, 474 flow. Second operand 4 states and 85 transitions. [2024-11-23 02:00:48,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 112 transitions, 1060 flow [2024-11-23 02:00:48,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 112 transitions, 1023 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-23 02:00:48,545 INFO L231 Difference]: Finished difference. Result has 92 places, 68 transitions, 463 flow [2024-11-23 02:00:48,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=463, PETRI_PLACES=92, PETRI_TRANSITIONS=68} [2024-11-23 02:00:48,546 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2024-11-23 02:00:48,546 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 68 transitions, 463 flow [2024-11-23 02:00:48,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:48,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:48,547 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:48,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 02:00:48,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:48,747 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:48,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:48,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1472345404, now seen corresponding path program 1 times [2024-11-23 02:00:48,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:48,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316809631] [2024-11-23 02:00:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:48,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:48,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316809631] [2024-11-23 02:00:48,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316809631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411054869] [2024-11-23 02:00:48,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:48,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:48,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:48,834 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:00:48,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 02:00:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:48,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:00:48,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:48,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:48,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411054869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:48,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:48,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 02:00:48,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415256898] [2024-11-23 02:00:48,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:48,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 02:00:48,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:48,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 02:00:48,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 02:00:48,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-23 02:00:48,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 68 transitions, 463 flow. Second operand has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:48,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:48,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-23 02:00:48,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:49,273 INFO L124 PetriNetUnfolderBase]: 823/1724 cut-off events. [2024-11-23 02:00:49,274 INFO L125 PetriNetUnfolderBase]: For 6682/6768 co-relation queries the response was YES. [2024-11-23 02:00:49,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6532 conditions, 1724 events. 823/1724 cut-off events. For 6682/6768 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10018 event pairs, 123 based on Foata normal form. 66/1764 useless extension candidates. Maximal degree in co-relation 6509. Up to 585 conditions per place. [2024-11-23 02:00:49,286 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 179 selfloop transitions, 12 changer transitions 0/205 dead transitions. [2024-11-23 02:00:49,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 205 transitions, 1916 flow [2024-11-23 02:00:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 02:00:49,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 02:00:49,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 225 transitions. [2024-11-23 02:00:49,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-11-23 02:00:49,288 INFO L175 Difference]: Start difference. First operand has 92 places, 68 transitions, 463 flow. Second operand 10 states and 225 transitions. [2024-11-23 02:00:49,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 205 transitions, 1916 flow [2024-11-23 02:00:49,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 205 transitions, 1886 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:00:49,298 INFO L231 Difference]: Finished difference. Result has 101 places, 77 transitions, 529 flow [2024-11-23 02:00:49,299 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=529, PETRI_PLACES=101, PETRI_TRANSITIONS=77} [2024-11-23 02:00:49,299 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 58 predicate places. [2024-11-23 02:00:49,299 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 77 transitions, 529 flow [2024-11-23 02:00:49,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:49,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:49,300 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:49,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-23 02:00:49,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:49,501 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:49,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1610978469, now seen corresponding path program 1 times [2024-11-23 02:00:49,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:49,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021213952] [2024-11-23 02:00:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:49,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:49,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:49,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021213952] [2024-11-23 02:00:49,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021213952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:49,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743002347] [2024-11-23 02:00:49,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:49,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:49,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:49,596 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:00:49,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 02:00:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:49,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 02:00:49,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:49,702 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 02:00:49,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743002347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:49,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 02:00:49,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-23 02:00:49,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163045154] [2024-11-23 02:00:49,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:49,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:49,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:49,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:49,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-23 02:00:49,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-23 02:00:49,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 77 transitions, 529 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:49,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:49,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-23 02:00:49,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:49,958 INFO L124 PetriNetUnfolderBase]: 1070/2505 cut-off events. [2024-11-23 02:00:49,958 INFO L125 PetriNetUnfolderBase]: For 9455/9555 co-relation queries the response was YES. [2024-11-23 02:00:49,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9212 conditions, 2505 events. 1070/2505 cut-off events. For 9455/9555 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 15673 event pairs, 211 based on Foata normal form. 61/2537 useless extension candidates. Maximal degree in co-relation 9186. Up to 933 conditions per place. [2024-11-23 02:00:49,972 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 89 selfloop transitions, 13 changer transitions 11/123 dead transitions. [2024-11-23 02:00:49,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 123 transitions, 1021 flow [2024-11-23 02:00:49,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:49,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-23 02:00:49,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-11-23 02:00:49,973 INFO L175 Difference]: Start difference. First operand has 101 places, 77 transitions, 529 flow. Second operand 4 states and 108 transitions. [2024-11-23 02:00:49,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 123 transitions, 1021 flow [2024-11-23 02:00:49,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 937 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-11-23 02:00:49,983 INFO L231 Difference]: Finished difference. Result has 96 places, 70 transitions, 508 flow [2024-11-23 02:00:49,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=508, PETRI_PLACES=96, PETRI_TRANSITIONS=70} [2024-11-23 02:00:49,983 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2024-11-23 02:00:49,983 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 70 transitions, 508 flow [2024-11-23 02:00:49,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:49,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:49,984 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:49,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 02:00:50,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-23 02:00:50,186 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:00:50,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:50,187 INFO L85 PathProgramCache]: Analyzing trace with hash -184418887, now seen corresponding path program 1 times [2024-11-23 02:00:50,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:50,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250075651] [2024-11-23 02:00:50,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:50,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:50,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:50,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250075651] [2024-11-23 02:00:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250075651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:50,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578639877] [2024-11-23 02:00:50,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:50,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:50,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:50,887 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:00:50,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 02:00:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:50,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-23 02:00:50,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:51,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 02:00:51,580 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:00:51,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2024-11-23 02:00:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:51,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:52,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2024-11-23 02:00:52,218 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:00:52,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 97 [2024-11-23 02:00:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:52,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578639877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:52,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:52,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 37 [2024-11-23 02:00:52,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593427713] [2024-11-23 02:00:52,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:52,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-23 02:00:52,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:52,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-23 02:00:52,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1307, Unknown=0, NotChecked=0, Total=1482 [2024-11-23 02:00:52,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-23 02:00:52,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 70 transitions, 508 flow. Second operand has 39 states, 39 states have (on average 10.564102564102564) internal successors, (412), 39 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:52,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:52,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-23 02:00:52,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:03,069 INFO L124 PetriNetUnfolderBase]: 6978/13786 cut-off events. [2024-11-23 02:01:03,069 INFO L125 PetriNetUnfolderBase]: For 61749/62357 co-relation queries the response was YES. [2024-11-23 02:01:03,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50723 conditions, 13786 events. 6978/13786 cut-off events. For 61749/62357 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 110953 event pairs, 557 based on Foata normal form. 602/14382 useless extension candidates. Maximal degree in co-relation 50695. Up to 2370 conditions per place. [2024-11-23 02:01:03,153 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 822 selfloop transitions, 204 changer transitions 12/1044 dead transitions. [2024-11-23 02:01:03,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 1044 transitions, 8585 flow [2024-11-23 02:01:03,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-23 02:01:03,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-11-23 02:01:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 1175 transitions. [2024-11-23 02:01:03,157 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3927139037433155 [2024-11-23 02:01:03,157 INFO L175 Difference]: Start difference. First operand has 96 places, 70 transitions, 508 flow. Second operand 68 states and 1175 transitions. [2024-11-23 02:01:03,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 1044 transitions, 8585 flow [2024-11-23 02:01:03,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 1044 transitions, 8017 flow, removed 284 selfloop flow, removed 3 redundant places. [2024-11-23 02:01:03,236 INFO L231 Difference]: Finished difference. Result has 182 places, 305 transitions, 3662 flow [2024-11-23 02:01:03,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=3662, PETRI_PLACES=182, PETRI_TRANSITIONS=305} [2024-11-23 02:01:03,237 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 139 predicate places. [2024-11-23 02:01:03,237 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 305 transitions, 3662 flow [2024-11-23 02:01:03,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 10.564102564102564) internal successors, (412), 39 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:03,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:03,237 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:03,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-23 02:01:03,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-23 02:01:03,442 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:01:03,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:03,443 INFO L85 PathProgramCache]: Analyzing trace with hash 602084373, now seen corresponding path program 2 times [2024-11-23 02:01:03,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:03,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656528689] [2024-11-23 02:01:03,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:01:03,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:03,470 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:01:03,474 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:04,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:04,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656528689] [2024-11-23 02:01:04,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656528689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:04,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548660346] [2024-11-23 02:01:04,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:01:04,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:04,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:04,278 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:04,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 02:01:04,359 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:01:04,359 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:04,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-23 02:01:04,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:04,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 02:01:04,675 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 02:01:04,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-23 02:01:04,697 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:04,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:05,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-23 02:01:05,410 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-23 02:01:05,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 47 [2024-11-23 02:01:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:05,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548660346] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:05,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:05,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 36 [2024-11-23 02:01:05,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299826056] [2024-11-23 02:01:05,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:05,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-23 02:01:05,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:05,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-23 02:01:05,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2024-11-23 02:01:05,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-23 02:01:05,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 305 transitions, 3662 flow. Second operand has 38 states, 38 states have (on average 10.578947368421053) internal successors, (402), 38 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:05,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:05,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-23 02:01:05,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:15,439 INFO L124 PetriNetUnfolderBase]: 7673/15420 cut-off events. [2024-11-23 02:01:15,439 INFO L125 PetriNetUnfolderBase]: For 195717/196651 co-relation queries the response was YES. [2024-11-23 02:01:15,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72452 conditions, 15420 events. 7673/15420 cut-off events. For 195717/196651 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 128541 event pairs, 1324 based on Foata normal form. 538/15924 useless extension candidates. Maximal degree in co-relation 72388. Up to 2987 conditions per place. [2024-11-23 02:01:15,654 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 662 selfloop transitions, 289 changer transitions 43/1000 dead transitions. [2024-11-23 02:01:15,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1000 transitions, 10660 flow [2024-11-23 02:01:15,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-23 02:01:15,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-11-23 02:01:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 1110 transitions. [2024-11-23 02:01:15,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36038961038961037 [2024-11-23 02:01:15,658 INFO L175 Difference]: Start difference. First operand has 182 places, 305 transitions, 3662 flow. Second operand 70 states and 1110 transitions. [2024-11-23 02:01:15,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 1000 transitions, 10660 flow [2024-11-23 02:01:16,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 1000 transitions, 9372 flow, removed 633 selfloop flow, removed 8 redundant places. [2024-11-23 02:01:16,340 INFO L231 Difference]: Finished difference. Result has 265 places, 441 transitions, 5465 flow [2024-11-23 02:01:16,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2782, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=5465, PETRI_PLACES=265, PETRI_TRANSITIONS=441} [2024-11-23 02:01:16,341 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-11-23 02:01:16,341 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 441 transitions, 5465 flow [2024-11-23 02:01:16,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 10.578947368421053) internal successors, (402), 38 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:16,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:16,341 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:16,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 02:01:16,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:16,542 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:01:16,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:16,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2073358687, now seen corresponding path program 3 times [2024-11-23 02:01:16,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:16,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095251776] [2024-11-23 02:01:16,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 02:01:16,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:16,603 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 02:01:16,603 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:16,728 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:01:16,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:16,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095251776] [2024-11-23 02:01:16,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095251776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:16,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787482408] [2024-11-23 02:01:16,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 02:01:16,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:16,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:16,732 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:16,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 02:01:16,806 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 02:01:16,807 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:01:16,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 02:01:16,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:01:16,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:16,944 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-23 02:01:16,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-23 02:01:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:01:16,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787482408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:16,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:16,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-23 02:01:16,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33590703] [2024-11-23 02:01:16,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:16,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 02:01:16,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:16,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 02:01:16,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-23 02:01:17,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-23 02:01:17,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 441 transitions, 5465 flow. Second operand has 15 states, 15 states have (on average 12.733333333333333) internal successors, (191), 15 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:17,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:17,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-23 02:01:17,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:22,264 INFO L124 PetriNetUnfolderBase]: 11640/23433 cut-off events. [2024-11-23 02:01:22,264 INFO L125 PetriNetUnfolderBase]: For 430316/431116 co-relation queries the response was YES. [2024-11-23 02:01:22,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117052 conditions, 23433 events. 11640/23433 cut-off events. For 430316/431116 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 209183 event pairs, 769 based on Foata normal form. 752/24104 useless extension candidates. Maximal degree in co-relation 116965. Up to 3787 conditions per place. [2024-11-23 02:01:22,717 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 797 selfloop transitions, 318 changer transitions 31/1152 dead transitions. [2024-11-23 02:01:22,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1152 transitions, 14867 flow [2024-11-23 02:01:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-23 02:01:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-23 02:01:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 744 transitions. [2024-11-23 02:01:22,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-11-23 02:01:22,719 INFO L175 Difference]: Start difference. First operand has 265 places, 441 transitions, 5465 flow. Second operand 37 states and 744 transitions. [2024-11-23 02:01:22,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1152 transitions, 14867 flow [2024-11-23 02:01:25,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1152 transitions, 13652 flow, removed 596 selfloop flow, removed 9 redundant places. [2024-11-23 02:01:25,199 INFO L231 Difference]: Finished difference. Result has 320 places, 631 transitions, 9297 flow [2024-11-23 02:01:25,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4798, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9297, PETRI_PLACES=320, PETRI_TRANSITIONS=631} [2024-11-23 02:01:25,200 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2024-11-23 02:01:25,200 INFO L471 AbstractCegarLoop]: Abstraction has has 320 places, 631 transitions, 9297 flow [2024-11-23 02:01:25,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.733333333333333) internal successors, (191), 15 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:25,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:25,201 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:25,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-23 02:01:25,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:25,401 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:01:25,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:25,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1053094945, now seen corresponding path program 1 times [2024-11-23 02:01:25,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:25,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649267469] [2024-11-23 02:01:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:25,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:26,070 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:26,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:01:26,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649267469] [2024-11-23 02:01:26,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649267469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:01:26,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532469240] [2024-11-23 02:01:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:01:26,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:01:26,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:01:26,071 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:01:26,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 02:01:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:01:26,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-23 02:01:26,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:01:26,538 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 02:01:26,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 02:01:26,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 02:01:26,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 13 [2024-11-23 02:01:26,561 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:26,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:01:26,827 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2024-11-23 02:01:26,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 42 [2024-11-23 02:01:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:01:27,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532469240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:01:27,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:01:27,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 37 [2024-11-23 02:01:27,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698769077] [2024-11-23 02:01:27,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:01:27,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-23 02:01:27,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:01:27,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-23 02:01:27,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1251, Unknown=0, NotChecked=0, Total=1482 [2024-11-23 02:01:27,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-23 02:01:27,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 631 transitions, 9297 flow. Second operand has 39 states, 39 states have (on average 11.487179487179487) internal successors, (448), 39 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:27,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:01:27,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-23 02:01:27,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:01:39,837 INFO L124 PetriNetUnfolderBase]: 15438/34287 cut-off events. [2024-11-23 02:01:39,837 INFO L125 PetriNetUnfolderBase]: For 663398/664764 co-relation queries the response was YES. [2024-11-23 02:01:40,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178618 conditions, 34287 events. 15438/34287 cut-off events. For 663398/664764 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 348214 event pairs, 2564 based on Foata normal form. 2163/36204 useless extension candidates. Maximal degree in co-relation 178500. Up to 5909 conditions per place. [2024-11-23 02:01:40,558 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 1024 selfloop transitions, 784 changer transitions 32/1926 dead transitions. [2024-11-23 02:01:40,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 1926 transitions, 25303 flow [2024-11-23 02:01:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-23 02:01:40,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2024-11-23 02:01:40,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 1434 transitions. [2024-11-23 02:01:40,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41254315304948214 [2024-11-23 02:01:40,561 INFO L175 Difference]: Start difference. First operand has 320 places, 631 transitions, 9297 flow. Second operand 79 states and 1434 transitions. [2024-11-23 02:01:40,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 1926 transitions, 25303 flow [2024-11-23 02:01:47,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 1926 transitions, 23837 flow, removed 548 selfloop flow, removed 5 redundant places. [2024-11-23 02:01:47,040 INFO L231 Difference]: Finished difference. Result has 423 places, 1167 transitions, 19169 flow [2024-11-23 02:01:47,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7771, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=19169, PETRI_PLACES=423, PETRI_TRANSITIONS=1167} [2024-11-23 02:01:47,041 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 380 predicate places. [2024-11-23 02:01:47,041 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 1167 transitions, 19169 flow [2024-11-23 02:01:47,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 11.487179487179487) internal successors, (448), 39 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:01:47,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:01:47,041 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:01:47,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-23 02:01:47,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-23 02:01:47,242 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-23 02:01:47,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:01:47,242 INFO L85 PathProgramCache]: Analyzing trace with hash 150390715, now seen corresponding path program 2 times [2024-11-23 02:01:47,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:01:47,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558756144] [2024-11-23 02:01:47,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:01:47,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:01:47,264 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:01:47,264 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat