./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/chl-name-comparator-symm.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 e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:08:40,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:08:40,968 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:08:40,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:08:40,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:08:41,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:08:41,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:08:41,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:08:41,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:08:41,011 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:08:41,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:08:41,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:08:41,012 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:08:41,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:08:41,013 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:08:41,013 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:08:41,014 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:08:41,014 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:08:41,014 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:08:41,014 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:08:41,015 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:08:41,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:08:41,017 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:08:41,018 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:08:41,018 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:08:41,018 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:08:41,018 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:08:41,019 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:08:41,019 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:08:41,019 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:08:41,020 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:08:41,020 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:08:41,020 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:08:41,021 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:08:41,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:08:41,021 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:08:41,021 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:08:41,021 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:08:41,022 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:08:41,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:08:41,022 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:08:41,022 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:08:41,023 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:08:41,023 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:08:41,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2024-11-09 15:08:41,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:08:41,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:08:41,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:08:41,292 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:08:41,293 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:08:41,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-11-09 15:08:42,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:08:42,991 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:08:42,992 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-11-09 15:08:43,001 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a09715f0/8bbd2cc32fcb42af8decce0316ddb070/FLAGf5054ad7d [2024-11-09 15:08:43,378 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a09715f0/8bbd2cc32fcb42af8decce0316ddb070 [2024-11-09 15:08:43,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:08:43,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:08:43,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:08:43,385 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:08:43,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:08:43,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:08:43" (1/1) ... [2024-11-09 15:08:43,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61a20f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43, skipping insertion in model container [2024-11-09 15:08:43,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:08:43" (1/1) ... [2024-11-09 15:08:43,420 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:08:43,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:08:43,706 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:08:43,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:08:43,753 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:08:43,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43 WrapperNode [2024-11-09 15:08:43,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:08:43,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:08:43,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:08:43,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:08:43,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43" (1/1) ... [2024-11-09 15:08:43,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43" (1/1) ... [2024-11-09 15:08:43,799 INFO L138 Inliner]: procedures = 24, calls = 25, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 257 [2024-11-09 15:08:43,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:08:43,801 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:08:43,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:08:43,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:08:43,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43" (1/1) ... [2024-11-09 15:08:43,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43" (1/1) ... [2024-11-09 15:08:43,816 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43" (1/1) ... [2024-11-09 15:08:43,836 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 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]. [2024-11-09 15:08:43,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43" (1/1) ... [2024-11-09 15:08:43,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43" (1/1) ... [2024-11-09 15:08:43,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43" (1/1) ... [2024-11-09 15:08:43,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43" (1/1) ... [2024-11-09 15:08:43,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43" (1/1) ... [2024-11-09 15:08:43,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43" (1/1) ... [2024-11-09 15:08:43,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:08:43,865 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:08:43,865 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:08:43,865 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:08:43,866 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43" (1/1) ... [2024-11-09 15:08:43,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:08:43,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:43,907 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) [2024-11-09 15:08:43,910 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 [2024-11-09 15:08:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:08:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:08:43,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:08:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:08:43,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:08:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:08:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:08:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:08:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:08:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:08:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:08:43,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:08:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:08:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:08:43,952 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:08:44,057 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:08:44,059 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:08:44,470 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:08:44,471 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:08:44,820 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:08:44,820 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 15:08:44,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:08:44 BoogieIcfgContainer [2024-11-09 15:08:44,821 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:08:44,825 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:08:44,825 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:08:44,830 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:08:44,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:08:43" (1/3) ... [2024-11-09 15:08:44,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4518c14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:08:44, skipping insertion in model container [2024-11-09 15:08:44,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:08:43" (2/3) ... [2024-11-09 15:08:44,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4518c14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:08:44, skipping insertion in model container [2024-11-09 15:08:44,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:08:44" (3/3) ... [2024-11-09 15:08:44,833 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2024-11-09 15:08:44,851 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:08:44,851 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-09 15:08:44,851 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:08:44,925 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 15:08:44,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 81 transitions, 176 flow [2024-11-09 15:08:45,008 INFO L124 PetriNetUnfolderBase]: 11/79 cut-off events. [2024-11-09 15:08:45,008 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:08:45,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 11/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 247 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-09 15:08:45,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 81 transitions, 176 flow [2024-11-09 15:08:45,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 78 transitions, 168 flow [2024-11-09 15:08:45,031 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:08:45,040 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;@4827abcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:08:45,041 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-09 15:08:45,045 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:08:45,045 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:08:45,046 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:08:45,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:45,047 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:08:45,047 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:45,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:45,054 INFO L85 PathProgramCache]: Analyzing trace with hash 755936, now seen corresponding path program 1 times [2024-11-09 15:08:45,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:45,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279600098] [2024-11-09 15:08:45,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:08:45,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:45,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279600098] [2024-11-09 15:08:45,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279600098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:45,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:08:45,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:08:45,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602775665] [2024-11-09 15:08:45,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:45,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:08:45,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:45,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:08:45,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:08:45,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-09 15:08:45,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-09 15:08:45,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:45,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-09 15:08:45,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:45,764 INFO L124 PetriNetUnfolderBase]: 595/1422 cut-off events. [2024-11-09 15:08:45,765 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-09 15:08:45,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 1422 events. 595/1422 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9413 event pairs, 390 based on Foata normal form. 3/1100 useless extension candidates. Maximal degree in co-relation 2283. Up to 906 conditions per place. [2024-11-09 15:08:45,783 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 34 selfloop transitions, 4 changer transitions 2/73 dead transitions. [2024-11-09 15:08:45,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 73 transitions, 236 flow [2024-11-09 15:08:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:08:45,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:08:45,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-11-09 15:08:45,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5802469135802469 [2024-11-09 15:08:45,802 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 168 flow. Second operand 4 states and 188 transitions. [2024-11-09 15:08:45,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 73 transitions, 236 flow [2024-11-09 15:08:45,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:08:45,812 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 153 flow [2024-11-09 15:08:45,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-11-09 15:08:45,820 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2024-11-09 15:08:45,820 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 153 flow [2024-11-09 15:08:45,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-09 15:08:45,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:45,822 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:08:45,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:08:45,823 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:45,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:45,823 INFO L85 PathProgramCache]: Analyzing trace with hash 23434778, now seen corresponding path program 1 times [2024-11-09 15:08:45,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:45,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631689280] [2024-11-09 15:08:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:45,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:08:45,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:45,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631689280] [2024-11-09 15:08:45,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631689280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:45,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:08:45,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:08:45,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201551772] [2024-11-09 15:08:45,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:45,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:08:45,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:45,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:08:45,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:08:45,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-09 15:08:45,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-09 15:08:45,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:45,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-09 15:08:45,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:46,218 INFO L124 PetriNetUnfolderBase]: 596/1424 cut-off events. [2024-11-09 15:08:46,218 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-09 15:08:46,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2357 conditions, 1424 events. 596/1424 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9407 event pairs, 390 based on Foata normal form. 1/1100 useless extension candidates. Maximal degree in co-relation 2329. Up to 910 conditions per place. [2024-11-09 15:08:46,227 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 37 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-11-09 15:08:46,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 247 flow [2024-11-09 15:08:46,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:08:46,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:08:46,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-11-09 15:08:46,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-11-09 15:08:46,230 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 153 flow. Second operand 4 states and 186 transitions. [2024-11-09 15:08:46,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 247 flow [2024-11-09 15:08:46,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 74 transitions, 233 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:08:46,236 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 172 flow [2024-11-09 15:08:46,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-11-09 15:08:46,237 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2024-11-09 15:08:46,237 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 172 flow [2024-11-09 15:08:46,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-09 15:08:46,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:46,238 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:08:46,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 15:08:46,239 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:46,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:46,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1933404232, now seen corresponding path program 1 times [2024-11-09 15:08:46,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:46,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831789105] [2024-11-09 15:08:46,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:46,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:46,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:08:46,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:46,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831789105] [2024-11-09 15:08:46,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831789105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:46,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851960986] [2024-11-09 15:08:46,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:46,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:46,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:46,341 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) [2024-11-09 15:08:46,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:08:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:46,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:08:46,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:08:46,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:08:46,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851960986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:46,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:46,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 15:08:46,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235799199] [2024-11-09 15:08:46,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:46,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:08:46,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:46,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:08:46,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:08:46,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-09 15:08:46,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 172 flow. Second operand has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 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) [2024-11-09 15:08:46,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:46,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-09 15:08:46,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:46,811 INFO L124 PetriNetUnfolderBase]: 599/1436 cut-off events. [2024-11-09 15:08:46,811 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-09 15:08:46,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 1436 events. 599/1436 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9512 event pairs, 390 based on Foata normal form. 0/1108 useless extension candidates. Maximal degree in co-relation 2336. Up to 913 conditions per place. [2024-11-09 15:08:46,820 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 37 selfloop transitions, 13 changer transitions 0/83 dead transitions. [2024-11-09 15:08:46,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 308 flow [2024-11-09 15:08:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:08:46,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:08:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 413 transitions. [2024-11-09 15:08:46,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5098765432098765 [2024-11-09 15:08:46,826 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 172 flow. Second operand 10 states and 413 transitions. [2024-11-09 15:08:46,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 308 flow [2024-11-09 15:08:46,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:08:46,828 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 249 flow [2024-11-09 15:08:46,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-11-09 15:08:46,829 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2024-11-09 15:08:46,830 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 249 flow [2024-11-09 15:08:46,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 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) [2024-11-09 15:08:46,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:46,830 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:46,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:08:47,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:47,032 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:47,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:47,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1814705083, now seen corresponding path program 1 times [2024-11-09 15:08:47,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:47,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257661085] [2024-11-09 15:08:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:47,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:47,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:08:47,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:47,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257661085] [2024-11-09 15:08:47,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257661085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:47,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:08:47,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:08:47,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574940329] [2024-11-09 15:08:47,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:47,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:08:47,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:47,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:08:47,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:08:47,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-09 15:08:47,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-11-09 15:08:47,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:47,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-09 15:08:47,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:47,507 INFO L124 PetriNetUnfolderBase]: 1243/2844 cut-off events. [2024-11-09 15:08:47,507 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-09 15:08:47,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4816 conditions, 2844 events. 1243/2844 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21263 event pairs, 486 based on Foata normal form. 28/2265 useless extension candidates. Maximal degree in co-relation 4780. Up to 1042 conditions per place. [2024-11-09 15:08:47,523 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 96 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-11-09 15:08:47,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 131 transitions, 546 flow [2024-11-09 15:08:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:08:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:08:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-11-09 15:08:47,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7191358024691358 [2024-11-09 15:08:47,525 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 249 flow. Second operand 4 states and 233 transitions. [2024-11-09 15:08:47,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 131 transitions, 546 flow [2024-11-09 15:08:47,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 131 transitions, 516 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-09 15:08:47,529 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 241 flow [2024-11-09 15:08:47,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2024-11-09 15:08:47,530 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 9 predicate places. [2024-11-09 15:08:47,531 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 241 flow [2024-11-09 15:08:47,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-11-09 15:08:47,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:47,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:47,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:08:47,532 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:47,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:47,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2119896660, now seen corresponding path program 1 times [2024-11-09 15:08:47,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:47,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545451932] [2024-11-09 15:08:47,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:47,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:47,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:08:47,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:47,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545451932] [2024-11-09 15:08:47,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545451932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:47,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:08:47,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:08:47,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064483752] [2024-11-09 15:08:47,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:47,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:08:47,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:47,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:08:47,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:08:47,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-09 15:08:47,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-09 15:08:47,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:47,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-09 15:08:47,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:48,212 INFO L124 PetriNetUnfolderBase]: 2395/5268 cut-off events. [2024-11-09 15:08:48,214 INFO L125 PetriNetUnfolderBase]: For 473/547 co-relation queries the response was YES. [2024-11-09 15:08:48,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9301 conditions, 5268 events. 2395/5268 cut-off events. For 473/547 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 42873 event pairs, 1004 based on Foata normal form. 52/4351 useless extension candidates. Maximal degree in co-relation 9267. Up to 2071 conditions per place. [2024-11-09 15:08:48,242 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 99 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2024-11-09 15:08:48,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 134 transitions, 573 flow [2024-11-09 15:08:48,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:08:48,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:08:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 230 transitions. [2024-11-09 15:08:48,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7098765432098766 [2024-11-09 15:08:48,244 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 241 flow. Second operand 4 states and 230 transitions. [2024-11-09 15:08:48,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 134 transitions, 573 flow [2024-11-09 15:08:48,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 134 transitions, 567 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:08:48,248 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 261 flow [2024-11-09 15:08:48,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2024-11-09 15:08:48,249 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2024-11-09 15:08:48,249 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 261 flow [2024-11-09 15:08:48,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-09 15:08:48,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:48,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:48,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:08:48,250 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:48,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:48,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1126064715, now seen corresponding path program 1 times [2024-11-09 15:08:48,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:48,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859147272] [2024-11-09 15:08:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:48,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:08:48,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:48,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859147272] [2024-11-09 15:08:48,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859147272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:48,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:08:48,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:08:48,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484962141] [2024-11-09 15:08:48,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:48,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:08:48,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:48,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:08:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:08:48,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-09 15:08:48,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2024-11-09 15:08:48,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:48,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-09 15:08:48,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:48,844 INFO L124 PetriNetUnfolderBase]: 1925/4173 cut-off events. [2024-11-09 15:08:48,845 INFO L125 PetriNetUnfolderBase]: For 615/681 co-relation queries the response was YES. [2024-11-09 15:08:48,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 4173 events. 1925/4173 cut-off events. For 615/681 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 31837 event pairs, 754 based on Foata normal form. 0/3624 useless extension candidates. Maximal degree in co-relation 7901. Up to 1687 conditions per place. [2024-11-09 15:08:48,871 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 108 selfloop transitions, 4 changer transitions 6/152 dead transitions. [2024-11-09 15:08:48,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 152 transitions, 674 flow [2024-11-09 15:08:48,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:08:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:08:48,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 289 transitions. [2024-11-09 15:08:48,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7135802469135802 [2024-11-09 15:08:48,874 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 261 flow. Second operand 5 states and 289 transitions. [2024-11-09 15:08:48,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 152 transitions, 674 flow [2024-11-09 15:08:48,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 152 transitions, 666 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:08:48,879 INFO L231 Difference]: Finished difference. Result has 93 places, 89 transitions, 284 flow [2024-11-09 15:08:48,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=93, PETRI_TRANSITIONS=89} [2024-11-09 15:08:48,880 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2024-11-09 15:08:48,880 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 284 flow [2024-11-09 15:08:48,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2024-11-09 15:08:48,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:48,881 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:48,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:08:48,881 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:48,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:48,882 INFO L85 PathProgramCache]: Analyzing trace with hash -513898147, now seen corresponding path program 1 times [2024-11-09 15:08:48,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:48,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024671319] [2024-11-09 15:08:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:48,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:48,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:08:48,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:48,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024671319] [2024-11-09 15:08:48,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024671319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:48,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:08:48,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:08:48,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301558179] [2024-11-09 15:08:48,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:48,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:08:48,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:48,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:08:48,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:08:48,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-09 15:08:48,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-09 15:08:48,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:48,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-09 15:08:48,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:49,320 INFO L124 PetriNetUnfolderBase]: 1832/4355 cut-off events. [2024-11-09 15:08:49,320 INFO L125 PetriNetUnfolderBase]: For 1245/1279 co-relation queries the response was YES. [2024-11-09 15:08:49,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8438 conditions, 4355 events. 1832/4355 cut-off events. For 1245/1279 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35297 event pairs, 1375 based on Foata normal form. 1/3721 useless extension candidates. Maximal degree in co-relation 8404. Up to 2865 conditions per place. [2024-11-09 15:08:49,417 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 52 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2024-11-09 15:08:49,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 388 flow [2024-11-09 15:08:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:08:49,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:08:49,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-11-09 15:08:49,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6337448559670782 [2024-11-09 15:08:49,419 INFO L175 Difference]: Start difference. First operand has 93 places, 89 transitions, 284 flow. Second operand 3 states and 154 transitions. [2024-11-09 15:08:49,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 388 flow [2024-11-09 15:08:49,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 88 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:08:49,425 INFO L231 Difference]: Finished difference. Result has 95 places, 88 transitions, 284 flow [2024-11-09 15:08:49,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=95, PETRI_TRANSITIONS=88} [2024-11-09 15:08:49,426 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2024-11-09 15:08:49,426 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 88 transitions, 284 flow [2024-11-09 15:08:49,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-09 15:08:49,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:49,427 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:49,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:08:49,427 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:49,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:49,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1099438591, now seen corresponding path program 1 times [2024-11-09 15:08:49,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:49,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088100352] [2024-11-09 15:08:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:49,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:08:49,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:49,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088100352] [2024-11-09 15:08:49,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088100352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:49,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863273385] [2024-11-09 15:08:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:49,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:49,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:49,523 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) [2024-11-09 15:08:49,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:08:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:49,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:08:49,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:08:49,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:08:49,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863273385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:49,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:49,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 15:08:49,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30176833] [2024-11-09 15:08:49,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:49,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:08:49,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:49,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:08:49,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:08:49,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-09 15:08:49,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 88 transitions, 284 flow. Second operand has 10 states, 10 states have (on average 37.7) internal successors, (377), 10 states have internal predecessors, (377), 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) [2024-11-09 15:08:49,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:49,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-09 15:08:49,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:50,316 INFO L124 PetriNetUnfolderBase]: 1830/4353 cut-off events. [2024-11-09 15:08:50,316 INFO L125 PetriNetUnfolderBase]: For 1251/1285 co-relation queries the response was YES. [2024-11-09 15:08:50,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8436 conditions, 4353 events. 1830/4353 cut-off events. For 1251/1285 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35279 event pairs, 1375 based on Foata normal form. 2/3720 useless extension candidates. Maximal degree in co-relation 8408. Up to 2857 conditions per place. [2024-11-09 15:08:50,337 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 43 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2024-11-09 15:08:50,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 86 transitions, 382 flow [2024-11-09 15:08:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:08:50,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:08:50,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 297 transitions. [2024-11-09 15:08:50,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-09 15:08:50,339 INFO L175 Difference]: Start difference. First operand has 95 places, 88 transitions, 284 flow. Second operand 7 states and 297 transitions. [2024-11-09 15:08:50,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 86 transitions, 382 flow [2024-11-09 15:08:50,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 86 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:08:50,343 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 292 flow [2024-11-09 15:08:50,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-11-09 15:08:50,344 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2024-11-09 15:08:50,344 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 292 flow [2024-11-09 15:08:50,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.7) internal successors, (377), 10 states have internal predecessors, (377), 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) [2024-11-09 15:08:50,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:50,345 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:08:50,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 15:08:50,545 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,SelfDestructingSolverStorable7 [2024-11-09 15:08:50,546 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:50,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:50,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1023767398, now seen corresponding path program 2 times [2024-11-09 15:08:50,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:50,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370988220] [2024-11-09 15:08:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:50,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:08:50,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:50,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370988220] [2024-11-09 15:08:50,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370988220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:50,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:08:50,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 15:08:50,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838307778] [2024-11-09 15:08:50,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:50,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 15:08:50,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:50,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 15:08:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:08:50,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-09 15:08:50,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 292 flow. Second operand has 9 states, 9 states have (on average 39.111111111111114) internal successors, (352), 9 states have internal predecessors, (352), 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) [2024-11-09 15:08:50,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:50,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-09 15:08:50,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:51,217 INFO L124 PetriNetUnfolderBase]: 1828/4345 cut-off events. [2024-11-09 15:08:51,218 INFO L125 PetriNetUnfolderBase]: For 1241/1275 co-relation queries the response was YES. [2024-11-09 15:08:51,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8415 conditions, 4345 events. 1828/4345 cut-off events. For 1241/1275 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35264 event pairs, 1375 based on Foata normal form. 1/3712 useless extension candidates. Maximal degree in co-relation 8400. Up to 2853 conditions per place. [2024-11-09 15:08:51,243 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 39 selfloop transitions, 8 changer transitions 0/80 dead transitions. [2024-11-09 15:08:51,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 80 transitions, 344 flow [2024-11-09 15:08:51,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 15:08:51,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 15:08:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 384 transitions. [2024-11-09 15:08:51,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267489711934157 [2024-11-09 15:08:51,246 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 292 flow. Second operand 9 states and 384 transitions. [2024-11-09 15:08:51,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 80 transitions, 344 flow [2024-11-09 15:08:51,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 80 transitions, 316 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-09 15:08:51,250 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 238 flow [2024-11-09 15:08:51,250 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=238, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2024-11-09 15:08:51,252 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 20 predicate places. [2024-11-09 15:08:51,252 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 238 flow [2024-11-09 15:08:51,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 39.111111111111114) internal successors, (352), 9 states have internal predecessors, (352), 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) [2024-11-09 15:08:51,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:51,253 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:51,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:08:51,253 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:51,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:51,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1628619457, now seen corresponding path program 2 times [2024-11-09 15:08:51,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:51,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116049515] [2024-11-09 15:08:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:51,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:08:51,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:51,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116049515] [2024-11-09 15:08:51,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116049515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:51,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893472719] [2024-11-09 15:08:51,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:08:51,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:51,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:51,365 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) [2024-11-09 15:08:51,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:08:51,449 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:08:51,450 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:08:51,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:08:51,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:08:51,484 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:08:51,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893472719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:51,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:08:51,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-09 15:08:51,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441672953] [2024-11-09 15:08:51,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:51,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:08:51,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:51,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:08:51,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:08:51,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-09 15:08:51,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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) [2024-11-09 15:08:51,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:51,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-09 15:08:51,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:51,909 INFO L124 PetriNetUnfolderBase]: 2119/4621 cut-off events. [2024-11-09 15:08:51,910 INFO L125 PetriNetUnfolderBase]: For 1145/1161 co-relation queries the response was YES. [2024-11-09 15:08:51,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9215 conditions, 4621 events. 2119/4621 cut-off events. For 1145/1161 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 35739 event pairs, 1273 based on Foata normal form. 52/4001 useless extension candidates. Maximal degree in co-relation 9204. Up to 2633 conditions per place. [2024-11-09 15:08:51,936 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 63 selfloop transitions, 5 changer transitions 0/98 dead transitions. [2024-11-09 15:08:51,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 98 transitions, 421 flow [2024-11-09 15:08:51,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:08:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:08:51,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-11-09 15:08:51,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6080246913580247 [2024-11-09 15:08:51,938 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 238 flow. Second operand 4 states and 197 transitions. [2024-11-09 15:08:51,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 98 transitions, 421 flow [2024-11-09 15:08:51,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 98 transitions, 405 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-09 15:08:51,944 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 228 flow [2024-11-09 15:08:51,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-11-09 15:08:51,947 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2024-11-09 15:08:51,947 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 228 flow [2024-11-09 15:08:51,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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) [2024-11-09 15:08:51,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:51,947 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:51,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:08:52,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:52,149 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:52,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:52,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1052405208, now seen corresponding path program 1 times [2024-11-09 15:08:52,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:52,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933050159] [2024-11-09 15:08:52,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:52,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:08:52,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:52,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933050159] [2024-11-09 15:08:52,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933050159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:52,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:08:52,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:08:52,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967219806] [2024-11-09 15:08:52,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:52,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:08:52,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:52,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:08:52,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:08:52,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-09 15:08:52,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2024-11-09 15:08:52,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:52,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-09 15:08:52,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:52,639 INFO L124 PetriNetUnfolderBase]: 1852/4286 cut-off events. [2024-11-09 15:08:52,639 INFO L125 PetriNetUnfolderBase]: For 1876/1884 co-relation queries the response was YES. [2024-11-09 15:08:52,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8551 conditions, 4286 events. 1852/4286 cut-off events. For 1876/1884 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 33873 event pairs, 1249 based on Foata normal form. 52/3746 useless extension candidates. Maximal degree in co-relation 8540. Up to 2634 conditions per place. [2024-11-09 15:08:52,670 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 62 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2024-11-09 15:08:52,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 97 transitions, 407 flow [2024-11-09 15:08:52,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:08:52,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:08:52,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-09 15:08:52,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707818930041153 [2024-11-09 15:08:52,673 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 228 flow. Second operand 3 states and 163 transitions. [2024-11-09 15:08:52,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 97 transitions, 407 flow [2024-11-09 15:08:52,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 97 transitions, 397 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:08:52,681 INFO L231 Difference]: Finished difference. Result has 86 places, 78 transitions, 222 flow [2024-11-09 15:08:52,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=86, PETRI_TRANSITIONS=78} [2024-11-09 15:08:52,682 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2024-11-09 15:08:52,682 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 78 transitions, 222 flow [2024-11-09 15:08:52,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2024-11-09 15:08:52,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:52,684 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:52,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:08:52,685 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:52,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:52,687 INFO L85 PathProgramCache]: Analyzing trace with hash -839160949, now seen corresponding path program 1 times [2024-11-09 15:08:52,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:52,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508925930] [2024-11-09 15:08:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:52,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:08:52,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:52,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508925930] [2024-11-09 15:08:52,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508925930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:52,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:08:52,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:08:52,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347111811] [2024-11-09 15:08:52,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:52,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:08:52,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:52,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:08:52,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:08:52,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-09 15:08:52,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 78 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2024-11-09 15:08:52,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:52,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-09 15:08:52,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:53,245 INFO L124 PetriNetUnfolderBase]: 1577/3447 cut-off events. [2024-11-09 15:08:53,245 INFO L125 PetriNetUnfolderBase]: For 1681/1689 co-relation queries the response was YES. [2024-11-09 15:08:53,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7271 conditions, 3447 events. 1577/3447 cut-off events. For 1681/1689 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 24169 event pairs, 719 based on Foata normal form. 0/3096 useless extension candidates. Maximal degree in co-relation 7260. Up to 1478 conditions per place. [2024-11-09 15:08:53,269 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 97 selfloop transitions, 4 changer transitions 12/144 dead transitions. [2024-11-09 15:08:53,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 144 transitions, 706 flow [2024-11-09 15:08:53,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:08:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:08:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 284 transitions. [2024-11-09 15:08:53,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7012345679012346 [2024-11-09 15:08:53,271 INFO L175 Difference]: Start difference. First operand has 86 places, 78 transitions, 222 flow. Second operand 5 states and 284 transitions. [2024-11-09 15:08:53,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 144 transitions, 706 flow [2024-11-09 15:08:53,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 144 transitions, 674 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:08:53,277 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 239 flow [2024-11-09 15:08:53,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2024-11-09 15:08:53,278 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2024-11-09 15:08:53,279 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 239 flow [2024-11-09 15:08:53,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2024-11-09 15:08:53,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:53,280 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:53,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 15:08:53,280 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:53,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:53,281 INFO L85 PathProgramCache]: Analyzing trace with hash -209815962, now seen corresponding path program 1 times [2024-11-09 15:08:53,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:53,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141586713] [2024-11-09 15:08:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:53,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:08:53,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:53,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141586713] [2024-11-09 15:08:53,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141586713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:53,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813923151] [2024-11-09 15:08:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:53,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:53,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:53,393 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) [2024-11-09 15:08:53,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:08:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:53,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:08:53,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:08:53,527 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:08:53,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813923151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:53,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:08:53,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 15:08:53,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274109171] [2024-11-09 15:08:53,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:53,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:08:53,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:53,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:08:53,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:08:53,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-09 15:08:53,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 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) [2024-11-09 15:08:53,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:53,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-09 15:08:53,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:54,066 INFO L124 PetriNetUnfolderBase]: 1666/3464 cut-off events. [2024-11-09 15:08:54,066 INFO L125 PetriNetUnfolderBase]: For 1760/1760 co-relation queries the response was YES. [2024-11-09 15:08:54,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7780 conditions, 3464 events. 1666/3464 cut-off events. For 1760/1760 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 23406 event pairs, 77 based on Foata normal form. 47/3204 useless extension candidates. Maximal degree in co-relation 7767. Up to 1461 conditions per place. [2024-11-09 15:08:54,087 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 128 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2024-11-09 15:08:54,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 162 transitions, 803 flow [2024-11-09 15:08:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:08:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:08:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 326 transitions. [2024-11-09 15:08:54,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707818930041153 [2024-11-09 15:08:54,090 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 239 flow. Second operand 6 states and 326 transitions. [2024-11-09 15:08:54,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 162 transitions, 803 flow [2024-11-09 15:08:54,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 162 transitions, 803 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:08:54,097 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 245 flow [2024-11-09 15:08:54,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-11-09 15:08:54,098 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2024-11-09 15:08:54,098 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 245 flow [2024-11-09 15:08:54,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 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) [2024-11-09 15:08:54,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:54,099 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:54,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 15:08:54,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:54,301 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:54,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:54,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2043007611, now seen corresponding path program 1 times [2024-11-09 15:08:54,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:54,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020541025] [2024-11-09 15:08:54,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:54,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:08:54,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:54,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020541025] [2024-11-09 15:08:54,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020541025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:54,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623964972] [2024-11-09 15:08:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:54,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:54,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:54,396 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) [2024-11-09 15:08:54,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:08:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:54,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:08:54,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:08:54,526 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:08:54,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623964972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:54,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:08:54,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 15:08:54,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597398374] [2024-11-09 15:08:54,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:54,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:08:54,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:54,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:08:54,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:08:54,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-09 15:08:54,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 245 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-11-09 15:08:54,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:54,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-09 15:08:54,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:55,001 INFO L124 PetriNetUnfolderBase]: 2050/4517 cut-off events. [2024-11-09 15:08:55,002 INFO L125 PetriNetUnfolderBase]: For 2959/2973 co-relation queries the response was YES. [2024-11-09 15:08:55,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9878 conditions, 4517 events. 2050/4517 cut-off events. For 2959/2973 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 33518 event pairs, 1239 based on Foata normal form. 92/4132 useless extension candidates. Maximal degree in co-relation 9864. Up to 2435 conditions per place. [2024-11-09 15:08:55,033 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 114 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2024-11-09 15:08:55,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 145 transitions, 749 flow [2024-11-09 15:08:55,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:08:55,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:08:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 264 transitions. [2024-11-09 15:08:55,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6518518518518519 [2024-11-09 15:08:55,035 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 245 flow. Second operand 5 states and 264 transitions. [2024-11-09 15:08:55,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 145 transitions, 749 flow [2024-11-09 15:08:55,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 145 transitions, 713 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-09 15:08:55,041 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 272 flow [2024-11-09 15:08:55,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2024-11-09 15:08:55,042 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 23 predicate places. [2024-11-09 15:08:55,042 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 272 flow [2024-11-09 15:08:55,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-11-09 15:08:55,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:55,044 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:55,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:08:55,244 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,SelfDestructingSolverStorable13 [2024-11-09 15:08:55,245 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:55,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:55,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2085640624, now seen corresponding path program 1 times [2024-11-09 15:08:55,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:55,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432504880] [2024-11-09 15:08:55,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:55,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:08:55,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:55,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432504880] [2024-11-09 15:08:55,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432504880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:55,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:08:55,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:08:55,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264128404] [2024-11-09 15:08:55,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:55,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:08:55,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:55,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:08:55,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:08:55,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-09 15:08:55,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-09 15:08:55,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:55,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-09 15:08:55,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:55,640 INFO L124 PetriNetUnfolderBase]: 1735/4038 cut-off events. [2024-11-09 15:08:55,640 INFO L125 PetriNetUnfolderBase]: For 2631/2657 co-relation queries the response was YES. [2024-11-09 15:08:55,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9045 conditions, 4038 events. 1735/4038 cut-off events. For 2631/2657 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 30394 event pairs, 1286 based on Foata normal form. 67/3728 useless extension candidates. Maximal degree in co-relation 9030. Up to 2520 conditions per place. [2024-11-09 15:08:55,669 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 69 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-09 15:08:55,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 102 transitions, 513 flow [2024-11-09 15:08:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:08:55,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:08:55,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-11-09 15:08:55,670 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 15:08:55,670 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 272 flow. Second operand 3 states and 162 transitions. [2024-11-09 15:08:55,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 102 transitions, 513 flow [2024-11-09 15:08:55,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 506 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 15:08:55,678 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 270 flow [2024-11-09 15:08:55,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-11-09 15:08:55,679 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2024-11-09 15:08:55,679 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 270 flow [2024-11-09 15:08:55,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-09 15:08:55,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:55,679 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:55,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 15:08:55,680 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:55,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:55,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1091272669, now seen corresponding path program 1 times [2024-11-09 15:08:55,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:55,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160841381] [2024-11-09 15:08:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:55,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:08:55,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:55,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160841381] [2024-11-09 15:08:55,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160841381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:55,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889880691] [2024-11-09 15:08:55,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:55,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:55,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:55,762 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) [2024-11-09 15:08:55,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:08:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:55,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:08:55,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:55,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:08:55,891 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:08:55,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889880691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:55,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:08:55,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-09 15:08:55,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402621500] [2024-11-09 15:08:55,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:55,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:08:55,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:55,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:08:55,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:08:55,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-09 15:08:55,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-09 15:08:55,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:55,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-09 15:08:55,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:56,264 INFO L124 PetriNetUnfolderBase]: 1833/4174 cut-off events. [2024-11-09 15:08:56,264 INFO L125 PetriNetUnfolderBase]: For 2885/2889 co-relation queries the response was YES. [2024-11-09 15:08:56,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9516 conditions, 4174 events. 1833/4174 cut-off events. For 2885/2889 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 30921 event pairs, 1060 based on Foata normal form. 50/3867 useless extension candidates. Maximal degree in co-relation 9501. Up to 2021 conditions per place. [2024-11-09 15:08:56,298 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 69 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2024-11-09 15:08:56,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 495 flow [2024-11-09 15:08:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:08:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:08:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-11-09 15:08:56,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-11-09 15:08:56,299 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 270 flow. Second operand 4 states and 196 transitions. [2024-11-09 15:08:56,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 495 flow [2024-11-09 15:08:56,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 100 transitions, 479 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:08:56,309 INFO L231 Difference]: Finished difference. Result has 96 places, 79 transitions, 268 flow [2024-11-09 15:08:56,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=96, PETRI_TRANSITIONS=79} [2024-11-09 15:08:56,310 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2024-11-09 15:08:56,310 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 79 transitions, 268 flow [2024-11-09 15:08:56,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-09 15:08:56,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:56,310 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:56,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 15:08:56,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 15:08:56,515 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:56,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:56,516 INFO L85 PathProgramCache]: Analyzing trace with hash 530254687, now seen corresponding path program 1 times [2024-11-09 15:08:56,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:56,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794352369] [2024-11-09 15:08:56,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:56,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:08:56,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:56,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794352369] [2024-11-09 15:08:56,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794352369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:56,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455873560] [2024-11-09 15:08:56,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:56,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:56,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:56,592 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) [2024-11-09 15:08:56,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:08:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:56,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:08:56,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:08:56,737 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:08:56,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455873560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:56,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:08:56,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-09 15:08:56,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778772908] [2024-11-09 15:08:56,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:56,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:08:56,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:56,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:08:56,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:08:56,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-09 15:08:56,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 79 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-09 15:08:56,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:56,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-09 15:08:56,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:57,107 INFO L124 PetriNetUnfolderBase]: 1837/4136 cut-off events. [2024-11-09 15:08:57,108 INFO L125 PetriNetUnfolderBase]: For 2931/2935 co-relation queries the response was YES. [2024-11-09 15:08:57,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9421 conditions, 4136 events. 1837/4136 cut-off events. For 2931/2935 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30270 event pairs, 1060 based on Foata normal form. 50/3829 useless extension candidates. Maximal degree in co-relation 9406. Up to 2021 conditions per place. [2024-11-09 15:08:57,134 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 70 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2024-11-09 15:08:57,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 99 transitions, 485 flow [2024-11-09 15:08:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:08:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:08:57,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-09 15:08:57,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-09 15:08:57,136 INFO L175 Difference]: Start difference. First operand has 96 places, 79 transitions, 268 flow. Second operand 4 states and 192 transitions. [2024-11-09 15:08:57,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 99 transitions, 485 flow [2024-11-09 15:08:57,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 99 transitions, 477 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:08:57,144 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 264 flow [2024-11-09 15:08:57,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2024-11-09 15:08:57,145 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2024-11-09 15:08:57,145 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 264 flow [2024-11-09 15:08:57,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-09 15:08:57,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:57,145 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:57,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 15:08:57,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:57,346 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:57,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:57,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1450169293, now seen corresponding path program 1 times [2024-11-09 15:08:57,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:57,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24326693] [2024-11-09 15:08:57,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:57,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:08:57,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:57,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24326693] [2024-11-09 15:08:57,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24326693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:57,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125104592] [2024-11-09 15:08:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:57,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:57,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:57,446 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) [2024-11-09 15:08:57,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:08:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:57,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:08:57,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:57,577 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:08:57,577 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:08:57,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125104592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:57,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:08:57,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 15:08:57,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928886402] [2024-11-09 15:08:57,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:57,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:08:57,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:57,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:08:57,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:08:57,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-09 15:08:57,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-11-09 15:08:57,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:57,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-09 15:08:57,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:58,064 INFO L124 PetriNetUnfolderBase]: 2332/5033 cut-off events. [2024-11-09 15:08:58,064 INFO L125 PetriNetUnfolderBase]: For 3340/3370 co-relation queries the response was YES. [2024-11-09 15:08:58,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11389 conditions, 5033 events. 2332/5033 cut-off events. For 3340/3370 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 37333 event pairs, 1423 based on Foata normal form. 132/4703 useless extension candidates. Maximal degree in co-relation 11374. Up to 2761 conditions per place. [2024-11-09 15:08:58,092 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 119 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2024-11-09 15:08:58,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 147 transitions, 832 flow [2024-11-09 15:08:58,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:08:58,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:08:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 261 transitions. [2024-11-09 15:08:58,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-09 15:08:58,094 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 264 flow. Second operand 5 states and 261 transitions. [2024-11-09 15:08:58,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 147 transitions, 832 flow [2024-11-09 15:08:58,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 147 transitions, 806 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:08:58,104 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 292 flow [2024-11-09 15:08:58,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2024-11-09 15:08:58,104 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 24 predicate places. [2024-11-09 15:08:58,104 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 292 flow [2024-11-09 15:08:58,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-11-09 15:08:58,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:58,105 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:58,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 15:08:58,305 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,SelfDestructingSolverStorable17 [2024-11-09 15:08:58,306 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:58,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:58,307 INFO L85 PathProgramCache]: Analyzing trace with hash -741973050, now seen corresponding path program 1 times [2024-11-09 15:08:58,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:58,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398666341] [2024-11-09 15:08:58,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:58,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:08:58,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:58,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398666341] [2024-11-09 15:08:58,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398666341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:58,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137519559] [2024-11-09 15:08:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:58,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:58,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:58,393 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) [2024-11-09 15:08:58,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 15:08:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:58,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:08:58,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:08:58,510 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:08:58,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137519559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:58,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:08:58,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 15:08:58,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822600393] [2024-11-09 15:08:58,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:58,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:08:58,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:58,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:08:58,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:08:58,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-09 15:08:58,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-09 15:08:58,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:58,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-09 15:08:58,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:59,031 INFO L124 PetriNetUnfolderBase]: 2111/4888 cut-off events. [2024-11-09 15:08:59,031 INFO L125 PetriNetUnfolderBase]: For 3521/3541 co-relation queries the response was YES. [2024-11-09 15:08:59,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11323 conditions, 4888 events. 2111/4888 cut-off events. For 3521/3541 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 37780 event pairs, 1475 based on Foata normal form. 62/4580 useless extension candidates. Maximal degree in co-relation 11306. Up to 2804 conditions per place. [2024-11-09 15:08:59,056 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 120 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2024-11-09 15:08:59,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 149 transitions, 832 flow [2024-11-09 15:08:59,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:08:59,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:08:59,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 259 transitions. [2024-11-09 15:08:59,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6395061728395062 [2024-11-09 15:08:59,058 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 292 flow. Second operand 5 states and 259 transitions. [2024-11-09 15:08:59,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 149 transitions, 832 flow [2024-11-09 15:08:59,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 149 transitions, 824 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:08:59,068 INFO L231 Difference]: Finished difference. Result has 100 places, 79 transitions, 291 flow [2024-11-09 15:08:59,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=100, PETRI_TRANSITIONS=79} [2024-11-09 15:08:59,069 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2024-11-09 15:08:59,069 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 79 transitions, 291 flow [2024-11-09 15:08:59,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-09 15:08:59,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:59,069 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:59,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 15:08:59,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:59,270 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:08:59,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:59,271 INFO L85 PathProgramCache]: Analyzing trace with hash -741974075, now seen corresponding path program 1 times [2024-11-09 15:08:59,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:59,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324586530] [2024-11-09 15:08:59,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:59,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:08:59,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:59,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324586530] [2024-11-09 15:08:59,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324586530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:59,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972595773] [2024-11-09 15:08:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:59,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:59,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:59,346 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) [2024-11-09 15:08:59,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 15:08:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:59,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:08:59,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:08:59,530 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:08:59,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972595773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:59,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:08:59,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-11-09 15:08:59,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722993773] [2024-11-09 15:08:59,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:59,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:08:59,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:59,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:08:59,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:08:59,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-09 15:08:59,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 79 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 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) [2024-11-09 15:08:59,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:59,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-09 15:08:59,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:59,933 INFO L124 PetriNetUnfolderBase]: 2189/4922 cut-off events. [2024-11-09 15:08:59,934 INFO L125 PetriNetUnfolderBase]: For 3545/3569 co-relation queries the response was YES. [2024-11-09 15:08:59,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11647 conditions, 4922 events. 2189/4922 cut-off events. For 3545/3569 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 37189 event pairs, 1547 based on Foata normal form. 64/4708 useless extension candidates. Maximal degree in co-relation 11630. Up to 2931 conditions per place. [2024-11-09 15:08:59,955 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 120 selfloop transitions, 6 changer transitions 0/149 dead transitions. [2024-11-09 15:08:59,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 149 transitions, 836 flow [2024-11-09 15:08:59,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:08:59,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:08:59,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 287 transitions. [2024-11-09 15:08:59,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5905349794238683 [2024-11-09 15:08:59,957 INFO L175 Difference]: Start difference. First operand has 100 places, 79 transitions, 291 flow. Second operand 6 states and 287 transitions. [2024-11-09 15:08:59,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 149 transitions, 836 flow [2024-11-09 15:08:59,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 149 transitions, 827 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:08:59,969 INFO L231 Difference]: Finished difference. Result has 103 places, 79 transitions, 298 flow [2024-11-09 15:08:59,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=103, PETRI_TRANSITIONS=79} [2024-11-09 15:08:59,969 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2024-11-09 15:08:59,969 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 79 transitions, 298 flow [2024-11-09 15:08:59,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 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) [2024-11-09 15:08:59,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:59,970 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:59,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 15:09:00,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:00,170 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:09:00,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:00,171 INFO L85 PathProgramCache]: Analyzing trace with hash -2005574262, now seen corresponding path program 1 times [2024-11-09 15:09:00,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:00,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706233988] [2024-11-09 15:09:00,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:00,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:00,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:00,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706233988] [2024-11-09 15:09:00,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706233988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:00,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894506371] [2024-11-09 15:09:00,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:00,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:00,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:00,254 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) [2024-11-09 15:09:00,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 15:09:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:00,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:09:00,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:09:00,386 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:00,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894506371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:00,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:00,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-09 15:09:00,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214959357] [2024-11-09 15:09:00,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:00,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:00,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:00,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:00,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:09:00,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-09 15:09:00,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 79 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2024-11-09 15:09:00,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:00,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-09 15:09:00,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:00,805 INFO L124 PetriNetUnfolderBase]: 2065/4669 cut-off events. [2024-11-09 15:09:00,806 INFO L125 PetriNetUnfolderBase]: For 3823/3847 co-relation queries the response was YES. [2024-11-09 15:09:00,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11186 conditions, 4669 events. 2065/4669 cut-off events. For 3823/3847 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 35343 event pairs, 1200 based on Foata normal form. 75/4456 useless extension candidates. Maximal degree in co-relation 11168. Up to 2309 conditions per place. [2024-11-09 15:09:00,827 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 72 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2024-11-09 15:09:00,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 100 transitions, 554 flow [2024-11-09 15:09:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:00,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:00,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-09 15:09:00,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2024-11-09 15:09:00,829 INFO L175 Difference]: Start difference. First operand has 103 places, 79 transitions, 298 flow. Second operand 4 states and 195 transitions. [2024-11-09 15:09:00,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 100 transitions, 554 flow [2024-11-09 15:09:00,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 100 transitions, 534 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:09:00,838 INFO L231 Difference]: Finished difference. Result has 100 places, 78 transitions, 292 flow [2024-11-09 15:09:00,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=100, PETRI_TRANSITIONS=78} [2024-11-09 15:09:00,839 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2024-11-09 15:09:00,839 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 78 transitions, 292 flow [2024-11-09 15:09:00,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2024-11-09 15:09:00,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:00,840 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:00,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 15:09:01,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-09 15:09:01,040 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:09:01,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:01,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1526359006, now seen corresponding path program 1 times [2024-11-09 15:09:01,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:01,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264325089] [2024-11-09 15:09:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:01,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:01,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:01,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264325089] [2024-11-09 15:09:01,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264325089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:01,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985064801] [2024-11-09 15:09:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:01,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:01,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:01,121 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) [2024-11-09 15:09:01,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 15:09:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:01,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:09:01,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:09:01,297 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:01,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985064801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:01,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:01,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-11-09 15:09:01,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483851138] [2024-11-09 15:09:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:01,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:09:01,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:01,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:09:01,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:09:01,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-09 15:09:01,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 78 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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) [2024-11-09 15:09:01,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:01,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-09 15:09:01,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:01,819 INFO L124 PetriNetUnfolderBase]: 2424/5168 cut-off events. [2024-11-09 15:09:01,819 INFO L125 PetriNetUnfolderBase]: For 4269/4315 co-relation queries the response was YES. [2024-11-09 15:09:01,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12614 conditions, 5168 events. 2424/5168 cut-off events. For 4269/4315 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 37979 event pairs, 1200 based on Foata normal form. 124/5092 useless extension candidates. Maximal degree in co-relation 12596. Up to 2346 conditions per place. [2024-11-09 15:09:01,857 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 139 selfloop transitions, 11 changer transitions 0/172 dead transitions. [2024-11-09 15:09:01,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 172 transitions, 1012 flow [2024-11-09 15:09:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:09:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:09:01,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 335 transitions. [2024-11-09 15:09:01,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5908289241622575 [2024-11-09 15:09:01,860 INFO L175 Difference]: Start difference. First operand has 100 places, 78 transitions, 292 flow. Second operand 7 states and 335 transitions. [2024-11-09 15:09:01,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 172 transitions, 1012 flow [2024-11-09 15:09:01,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 172 transitions, 980 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:09:01,875 INFO L231 Difference]: Finished difference. Result has 105 places, 80 transitions, 324 flow [2024-11-09 15:09:01,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=105, PETRI_TRANSITIONS=80} [2024-11-09 15:09:01,876 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 31 predicate places. [2024-11-09 15:09:01,876 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 80 transitions, 324 flow [2024-11-09 15:09:01,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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) [2024-11-09 15:09:01,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:01,876 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:01,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 15:09:02,077 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,SelfDestructingSolverStorable21 [2024-11-09 15:09:02,077 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:09:02,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:02,078 INFO L85 PathProgramCache]: Analyzing trace with hash -2043290889, now seen corresponding path program 1 times [2024-11-09 15:09:02,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:02,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958760647] [2024-11-09 15:09:02,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:02,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:02,167 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:02,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:02,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958760647] [2024-11-09 15:09:02,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958760647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:02,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028649755] [2024-11-09 15:09:02,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:02,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:02,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:02,170 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) [2024-11-09 15:09:02,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 15:09:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:02,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:09:02,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:09:02,316 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:02,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028649755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:02,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:02,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-09 15:09:02,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534572140] [2024-11-09 15:09:02,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:02,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:02,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:02,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:02,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:09:02,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-09 15:09:02,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 80 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-11-09 15:09:02,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:02,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-09 15:09:02,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:02,622 INFO L124 PetriNetUnfolderBase]: 2182/4853 cut-off events. [2024-11-09 15:09:02,622 INFO L125 PetriNetUnfolderBase]: For 5050/5118 co-relation queries the response was YES. [2024-11-09 15:09:02,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12357 conditions, 4853 events. 2182/4853 cut-off events. For 5050/5118 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 36440 event pairs, 1288 based on Foata normal form. 111/4704 useless extension candidates. Maximal degree in co-relation 12337. Up to 2461 conditions per place. [2024-11-09 15:09:02,645 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 77 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2024-11-09 15:09:02,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 103 transitions, 610 flow [2024-11-09 15:09:02,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-11-09 15:09:02,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5895061728395061 [2024-11-09 15:09:02,647 INFO L175 Difference]: Start difference. First operand has 105 places, 80 transitions, 324 flow. Second operand 4 states and 191 transitions. [2024-11-09 15:09:02,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 103 transitions, 610 flow [2024-11-09 15:09:02,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 103 transitions, 592 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:09:02,660 INFO L231 Difference]: Finished difference. Result has 104 places, 79 transitions, 317 flow [2024-11-09 15:09:02,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=104, PETRI_TRANSITIONS=79} [2024-11-09 15:09:02,660 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2024-11-09 15:09:02,660 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 79 transitions, 317 flow [2024-11-09 15:09:02,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-11-09 15:09:02,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:02,661 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:02,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 15:09:02,861 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,SelfDestructingSolverStorable22 [2024-11-09 15:09:02,861 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:09:02,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:02,862 INFO L85 PathProgramCache]: Analyzing trace with hash 874829003, now seen corresponding path program 1 times [2024-11-09 15:09:02,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:02,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603518538] [2024-11-09 15:09:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:02,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:02,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603518538] [2024-11-09 15:09:02,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603518538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:02,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628200774] [2024-11-09 15:09:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:02,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:02,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:02,998 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) [2024-11-09 15:09:03,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 15:09:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:03,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:09:03,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:09:03,125 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:03,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628200774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:03,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:03,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 15:09:03,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197649658] [2024-11-09 15:09:03,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:03,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:03,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:03,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:03,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:09:03,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-09 15:09:03,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 79 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-11-09 15:09:03,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:03,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-09 15:09:03,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:03,648 INFO L124 PetriNetUnfolderBase]: 2263/4918 cut-off events. [2024-11-09 15:09:03,648 INFO L125 PetriNetUnfolderBase]: For 5069/5109 co-relation queries the response was YES. [2024-11-09 15:09:03,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12440 conditions, 4918 events. 2263/4918 cut-off events. For 5069/5109 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 36279 event pairs, 1469 based on Foata normal form. 90/4794 useless extension candidates. Maximal degree in co-relation 12420. Up to 2844 conditions per place. [2024-11-09 15:09:03,673 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 119 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2024-11-09 15:09:03,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 147 transitions, 870 flow [2024-11-09 15:09:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:09:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:09:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 257 transitions. [2024-11-09 15:09:03,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6345679012345679 [2024-11-09 15:09:03,675 INFO L175 Difference]: Start difference. First operand has 104 places, 79 transitions, 317 flow. Second operand 5 states and 257 transitions. [2024-11-09 15:09:03,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 147 transitions, 870 flow [2024-11-09 15:09:03,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 147 transitions, 841 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:09:03,694 INFO L231 Difference]: Finished difference. Result has 103 places, 78 transitions, 312 flow [2024-11-09 15:09:03,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=103, PETRI_TRANSITIONS=78} [2024-11-09 15:09:03,695 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2024-11-09 15:09:03,695 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 78 transitions, 312 flow [2024-11-09 15:09:03,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-11-09 15:09:03,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:03,695 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:03,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 15:09:03,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:03,896 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:09:03,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:03,897 INFO L85 PathProgramCache]: Analyzing trace with hash 874827978, now seen corresponding path program 1 times [2024-11-09 15:09:03,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:03,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121374205] [2024-11-09 15:09:03,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:03,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:04,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:04,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121374205] [2024-11-09 15:09:04,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121374205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:04,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156446575] [2024-11-09 15:09:04,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:04,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:04,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:04,013 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) [2024-11-09 15:09:04,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 15:09:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:04,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:09:04,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:04,162 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:09:04,162 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:04,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156446575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:04,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:04,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 15:09:04,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132154724] [2024-11-09 15:09:04,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:04,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:04,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:04,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:04,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:09:04,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-09 15:09:04,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 78 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-11-09 15:09:04,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:04,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-09 15:09:04,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:04,566 INFO L124 PetriNetUnfolderBase]: 2493/5112 cut-off events. [2024-11-09 15:09:04,566 INFO L125 PetriNetUnfolderBase]: For 4576/4613 co-relation queries the response was YES. [2024-11-09 15:09:04,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13288 conditions, 5112 events. 2493/5112 cut-off events. For 4576/4613 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 36225 event pairs, 1612 based on Foata normal form. 87/4991 useless extension candidates. Maximal degree in co-relation 13268. Up to 3098 conditions per place. [2024-11-09 15:09:04,589 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 94 selfloop transitions, 6 changer transitions 6/125 dead transitions. [2024-11-09 15:09:04,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 125 transitions, 724 flow [2024-11-09 15:09:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:04,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:04,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-11-09 15:09:04,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6604938271604939 [2024-11-09 15:09:04,591 INFO L175 Difference]: Start difference. First operand has 103 places, 78 transitions, 312 flow. Second operand 4 states and 214 transitions. [2024-11-09 15:09:04,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 125 transitions, 724 flow [2024-11-09 15:09:04,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 125 transitions, 702 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-09 15:09:04,605 INFO L231 Difference]: Finished difference. Result has 101 places, 78 transitions, 309 flow [2024-11-09 15:09:04,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=309, PETRI_PLACES=101, PETRI_TRANSITIONS=78} [2024-11-09 15:09:04,606 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2024-11-09 15:09:04,606 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 78 transitions, 309 flow [2024-11-09 15:09:04,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-11-09 15:09:04,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:04,606 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:04,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 15:09:04,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:04,807 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:09:04,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:04,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1082491724, now seen corresponding path program 1 times [2024-11-09 15:09:04,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:04,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419429291] [2024-11-09 15:09:04,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:04,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:04,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:04,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419429291] [2024-11-09 15:09:04,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419429291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:04,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756575262] [2024-11-09 15:09:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:04,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:04,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:04,886 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) [2024-11-09 15:09:04,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 15:09:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:04,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:09:04,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:09:05,074 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:05,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756575262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:05,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:05,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-11-09 15:09:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812180587] [2024-11-09 15:09:05,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:05,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:09:05,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:09:05,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:09:05,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-09 15:09:05,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 78 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2024-11-09 15:09:05,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:05,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-09 15:09:05,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:05,504 INFO L124 PetriNetUnfolderBase]: 2293/4851 cut-off events. [2024-11-09 15:09:05,504 INFO L125 PetriNetUnfolderBase]: For 4725/4777 co-relation queries the response was YES. [2024-11-09 15:09:05,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12474 conditions, 4851 events. 2293/4851 cut-off events. For 4725/4777 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 34884 event pairs, 1668 based on Foata normal form. 146/4841 useless extension candidates. Maximal degree in co-relation 12455. Up to 3136 conditions per place. [2024-11-09 15:09:05,525 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 125 selfloop transitions, 6 changer transitions 0/150 dead transitions. [2024-11-09 15:09:05,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 150 transitions, 939 flow [2024-11-09 15:09:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:09:05,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:09:05,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 285 transitions. [2024-11-09 15:09:05,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5864197530864198 [2024-11-09 15:09:05,527 INFO L175 Difference]: Start difference. First operand has 101 places, 78 transitions, 309 flow. Second operand 6 states and 285 transitions. [2024-11-09 15:09:05,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 150 transitions, 939 flow [2024-11-09 15:09:05,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 150 transitions, 889 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-09 15:09:05,538 INFO L231 Difference]: Finished difference. Result has 103 places, 77 transitions, 302 flow [2024-11-09 15:09:05,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=103, PETRI_TRANSITIONS=77} [2024-11-09 15:09:05,538 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2024-11-09 15:09:05,538 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 77 transitions, 302 flow [2024-11-09 15:09:05,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2024-11-09 15:09:05,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:05,539 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:05,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 15:09:05,739 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,SelfDestructingSolverStorable25 [2024-11-09 15:09:05,739 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:09:05,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2078365277, now seen corresponding path program 1 times [2024-11-09 15:09:05,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:05,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688668492] [2024-11-09 15:09:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:05,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:05,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:05,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688668492] [2024-11-09 15:09:05,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688668492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:05,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233182167] [2024-11-09 15:09:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:05,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:05,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:05,824 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:09:05,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 15:09:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:05,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:09:05,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:09:05,954 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:05,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233182167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:05,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:05,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 15:09:05,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087104461] [2024-11-09 15:09:05,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:05,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:05,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:05,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:05,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:09:05,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-09 15:09:05,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 77 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2024-11-09 15:09:05,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:05,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-09 15:09:05,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:06,406 INFO L124 PetriNetUnfolderBase]: 2223/4722 cut-off events. [2024-11-09 15:09:06,406 INFO L125 PetriNetUnfolderBase]: For 4138/4157 co-relation queries the response was YES. [2024-11-09 15:09:06,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12119 conditions, 4722 events. 2223/4722 cut-off events. For 4138/4157 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 33976 event pairs, 1762 based on Foata normal form. 67/4628 useless extension candidates. Maximal degree in co-relation 12100. Up to 3362 conditions per place. [2024-11-09 15:09:06,427 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 81 selfloop transitions, 3 changer transitions 18/122 dead transitions. [2024-11-09 15:09:06,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 122 transitions, 710 flow [2024-11-09 15:09:06,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:06,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2024-11-09 15:09:06,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6635802469135802 [2024-11-09 15:09:06,429 INFO L175 Difference]: Start difference. First operand has 103 places, 77 transitions, 302 flow. Second operand 4 states and 215 transitions. [2024-11-09 15:09:06,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 122 transitions, 710 flow [2024-11-09 15:09:06,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 122 transitions, 682 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:09:06,441 INFO L231 Difference]: Finished difference. Result has 100 places, 70 transitions, 262 flow [2024-11-09 15:09:06,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=100, PETRI_TRANSITIONS=70} [2024-11-09 15:09:06,441 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2024-11-09 15:09:06,442 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 70 transitions, 262 flow [2024-11-09 15:09:06,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2024-11-09 15:09:06,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:06,442 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:06,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 15:09:06,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 15:09:06,643 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:09:06,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:06,643 INFO L85 PathProgramCache]: Analyzing trace with hash -802494054, now seen corresponding path program 1 times [2024-11-09 15:09:06,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:06,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959431266] [2024-11-09 15:09:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:06,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:06,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:06,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:06,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959431266] [2024-11-09 15:09:06,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959431266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:06,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064604589] [2024-11-09 15:09:06,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:06,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:06,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:06,720 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:09:06,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 15:09:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:06,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:09:06,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:06,873 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:09:06,874 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:06,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064604589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:06,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:06,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-11-09 15:09:06,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269625905] [2024-11-09 15:09:06,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:06,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:09:06,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:06,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:09:06,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:09:06,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-09 15:09:06,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 70 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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) [2024-11-09 15:09:06,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:06,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-09 15:09:06,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:07,282 INFO L124 PetriNetUnfolderBase]: 1859/3990 cut-off events. [2024-11-09 15:09:07,283 INFO L125 PetriNetUnfolderBase]: For 3530/3552 co-relation queries the response was YES. [2024-11-09 15:09:07,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9945 conditions, 3990 events. 1859/3990 cut-off events. For 3530/3552 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 27816 event pairs, 756 based on Foata normal form. 106/4003 useless extension candidates. Maximal degree in co-relation 9927. Up to 1463 conditions per place. [2024-11-09 15:09:07,297 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 141 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-11-09 15:09:07,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 167 transitions, 1026 flow [2024-11-09 15:09:07,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:09:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:09:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 327 transitions. [2024-11-09 15:09:07,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5767195767195767 [2024-11-09 15:09:07,298 INFO L175 Difference]: Start difference. First operand has 100 places, 70 transitions, 262 flow. Second operand 7 states and 327 transitions. [2024-11-09 15:09:07,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 167 transitions, 1026 flow [2024-11-09 15:09:07,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 167 transitions, 966 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-09 15:09:07,305 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 268 flow [2024-11-09 15:09:07,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=268, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2024-11-09 15:09:07,306 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2024-11-09 15:09:07,306 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 268 flow [2024-11-09 15:09:07,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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) [2024-11-09 15:09:07,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:07,306 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:07,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 15:09:07,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 15:09:07,507 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:09:07,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:07,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1839806066, now seen corresponding path program 1 times [2024-11-09 15:09:07,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:07,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320474480] [2024-11-09 15:09:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:07,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:07,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:07,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320474480] [2024-11-09 15:09:07,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320474480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:07,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585798700] [2024-11-09 15:09:07,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:07,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:07,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:07,581 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:09:07,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 15:09:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:07,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:09:07,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:09:07,703 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:07,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585798700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:07,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:07,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 15:09:07,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368112350] [2024-11-09 15:09:07,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:07,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:07,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:07,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:07,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:09:07,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-09 15:09:07,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-09 15:09:07,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:07,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-09 15:09:07,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:08,026 INFO L124 PetriNetUnfolderBase]: 1695/3779 cut-off events. [2024-11-09 15:09:08,026 INFO L125 PetriNetUnfolderBase]: For 3241/3259 co-relation queries the response was YES. [2024-11-09 15:09:08,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9403 conditions, 3779 events. 1695/3779 cut-off events. For 3241/3259 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 26831 event pairs, 1060 based on Foata normal form. 59/3699 useless extension candidates. Maximal degree in co-relation 9386. Up to 2004 conditions per place. [2024-11-09 15:09:08,041 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 118 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2024-11-09 15:09:08,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 142 transitions, 825 flow [2024-11-09 15:09:08,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:09:08,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:09:08,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2024-11-09 15:09:08,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6172839506172839 [2024-11-09 15:09:08,042 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 268 flow. Second operand 5 states and 250 transitions. [2024-11-09 15:09:08,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 142 transitions, 825 flow [2024-11-09 15:09:08,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 142 transitions, 812 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:09:08,053 INFO L231 Difference]: Finished difference. Result has 94 places, 70 transitions, 258 flow [2024-11-09 15:09:08,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=94, PETRI_TRANSITIONS=70} [2024-11-09 15:09:08,054 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 20 predicate places. [2024-11-09 15:09:08,054 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 70 transitions, 258 flow [2024-11-09 15:09:08,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-09 15:09:08,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:08,054 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:08,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 15:09:08,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 15:09:08,255 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:09:08,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:08,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1839805041, now seen corresponding path program 1 times [2024-11-09 15:09:08,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:08,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456943795] [2024-11-09 15:09:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:08,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:08,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:08,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456943795] [2024-11-09 15:09:08,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456943795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:08,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814997867] [2024-11-09 15:09:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:08,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:08,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:08,337 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:09:08,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 15:09:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:08,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:09:08,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:09:08,466 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:08,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814997867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:08,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:08,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 15:09:08,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879375314] [2024-11-09 15:09:08,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:08,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:08,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:08,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:08,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:09:08,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-09 15:09:08,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 70 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-11-09 15:09:08,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:08,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-09 15:09:08,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:08,975 INFO L124 PetriNetUnfolderBase]: 1941/3974 cut-off events. [2024-11-09 15:09:08,975 INFO L125 PetriNetUnfolderBase]: For 3136/3158 co-relation queries the response was YES. [2024-11-09 15:09:08,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10233 conditions, 3974 events. 1941/3974 cut-off events. For 3136/3158 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 26614 event pairs, 1212 based on Foata normal form. 55/3935 useless extension candidates. Maximal degree in co-relation 10216. Up to 2274 conditions per place. [2024-11-09 15:09:08,987 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 73 selfloop transitions, 1 changer transitions 29/119 dead transitions. [2024-11-09 15:09:08,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 119 transitions, 682 flow [2024-11-09 15:09:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:08,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-11-09 15:09:08,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6450617283950617 [2024-11-09 15:09:08,989 INFO L175 Difference]: Start difference. First operand has 94 places, 70 transitions, 258 flow. Second operand 4 states and 209 transitions. [2024-11-09 15:09:08,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 119 transitions, 682 flow [2024-11-09 15:09:08,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 119 transitions, 670 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:09:08,999 INFO L231 Difference]: Finished difference. Result has 92 places, 66 transitions, 232 flow [2024-11-09 15:09:09,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=92, PETRI_TRANSITIONS=66} [2024-11-09 15:09:09,000 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 18 predicate places. [2024-11-09 15:09:09,000 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 66 transitions, 232 flow [2024-11-09 15:09:09,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-11-09 15:09:09,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:09,000 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:09,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 15:09:09,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:09,201 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-09 15:09:09,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:09,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1927883189, now seen corresponding path program 1 times [2024-11-09 15:09:09,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:09,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199128729] [2024-11-09 15:09:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:09,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:09,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:09,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199128729] [2024-11-09 15:09:09,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199128729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:09,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551644438] [2024-11-09 15:09:09,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:09,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:09,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:09,274 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:09:09,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 15:09:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:09,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:09:09,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:09:09,398 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:09,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551644438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:09,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:09,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 15:09:09,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895361974] [2024-11-09 15:09:09,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:09,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:09,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:09,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:09,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:09:09,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-09 15:09:09,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 66 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2024-11-09 15:09:09,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:09,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-09 15:09:09,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:09,650 INFO L124 PetriNetUnfolderBase]: 1285/2772 cut-off events. [2024-11-09 15:09:09,650 INFO L125 PetriNetUnfolderBase]: For 1704/1708 co-relation queries the response was YES. [2024-11-09 15:09:09,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6791 conditions, 2772 events. 1285/2772 cut-off events. For 1704/1708 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 18020 event pairs, 984 based on Foata normal form. 53/2686 useless extension candidates. Maximal degree in co-relation 6775. Up to 1869 conditions per place. [2024-11-09 15:09:09,657 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 0 selfloop transitions, 0 changer transitions 113/113 dead transitions. [2024-11-09 15:09:09,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 632 flow [2024-11-09 15:09:09,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:09,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:09,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-09 15:09:09,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-09 15:09:09,658 INFO L175 Difference]: Start difference. First operand has 92 places, 66 transitions, 232 flow. Second operand 4 states and 207 transitions. [2024-11-09 15:09:09,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 113 transitions, 632 flow [2024-11-09 15:09:09,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 113 transitions, 624 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 15:09:09,663 INFO L231 Difference]: Finished difference. Result has 87 places, 0 transitions, 0 flow [2024-11-09 15:09:09,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=87, PETRI_TRANSITIONS=0} [2024-11-09 15:09:09,663 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2024-11-09 15:09:09,663 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 0 transitions, 0 flow [2024-11-09 15:09:09,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2024-11-09 15:09:09,666 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2024-11-09 15:09:09,666 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2024-11-09 15:09:09,667 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2024-11-09 15:09:09,667 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2024-11-09 15:09:09,667 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2024-11-09 15:09:09,667 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2024-11-09 15:09:09,667 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2024-11-09 15:09:09,667 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2024-11-09 15:09:09,667 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2024-11-09 15:09:09,668 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2024-11-09 15:09:09,668 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2024-11-09 15:09:09,668 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2024-11-09 15:09:09,668 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2024-11-09 15:09:09,668 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2024-11-09 15:09:09,668 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2024-11-09 15:09:09,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2024-11-09 15:09:09,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2024-11-09 15:09:09,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2024-11-09 15:09:09,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2024-11-09 15:09:09,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2024-11-09 15:09:09,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2024-11-09 15:09:09,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2024-11-09 15:09:09,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2024-11-09 15:09:09,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2024-11-09 15:09:09,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2024-11-09 15:09:09,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2024-11-09 15:09:09,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2024-11-09 15:09:09,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2024-11-09 15:09:09,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2024-11-09 15:09:09,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2024-11-09 15:09:09,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2024-11-09 15:09:09,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2024-11-09 15:09:09,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2024-11-09 15:09:09,671 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2024-11-09 15:09:09,671 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2024-11-09 15:09:09,671 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2024-11-09 15:09:09,671 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2024-11-09 15:09:09,671 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2024-11-09 15:09:09,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 15:09:09,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:09,872 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:09,878 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 15:09:09,878 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 15:09:09,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:09:09 BasicIcfg [2024-11-09 15:09:09,884 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 15:09:09,884 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 15:09:09,885 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 15:09:09,885 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 15:09:09,885 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:08:44" (3/4) ... [2024-11-09 15:09:09,886 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 15:09:09,889 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-09 15:09:09,890 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-09 15:09:09,898 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 117 nodes and edges [2024-11-09 15:09:09,900 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-11-09 15:09:09,900 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-09 15:09:09,901 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-09 15:09:09,990 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 15:09:09,990 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 15:09:09,991 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 15:09:09,992 INFO L158 Benchmark]: Toolchain (without parser) took 26609.16ms. Allocated memory was 159.4MB in the beginning and 935.3MB in the end (delta: 775.9MB). Free memory was 101.0MB in the beginning and 610.6MB in the end (delta: -509.6MB). Peak memory consumption was 266.7MB. Max. memory is 16.1GB. [2024-11-09 15:09:09,992 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 92.3MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:09:09,992 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.45ms. Allocated memory is still 159.4MB. Free memory was 100.7MB in the beginning and 124.5MB in the end (delta: -23.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 15:09:09,993 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.01ms. Allocated memory is still 159.4MB. Free memory was 124.5MB in the beginning and 122.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 15:09:09,993 INFO L158 Benchmark]: Boogie Preprocessor took 63.69ms. Allocated memory is still 159.4MB. Free memory was 122.3MB in the beginning and 119.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 15:09:09,993 INFO L158 Benchmark]: RCFGBuilder took 956.05ms. Allocated memory was 159.4MB in the beginning and 205.5MB in the end (delta: 46.1MB). Free memory was 119.0MB in the beginning and 167.9MB in the end (delta: -48.9MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. [2024-11-09 15:09:09,993 INFO L158 Benchmark]: TraceAbstraction took 25059.30ms. Allocated memory was 205.5MB in the beginning and 935.3MB in the end (delta: 729.8MB). Free memory was 167.9MB in the beginning and 615.8MB in the end (delta: -447.9MB). Peak memory consumption was 281.9MB. Max. memory is 16.1GB. [2024-11-09 15:09:09,993 INFO L158 Benchmark]: Witness Printer took 106.18ms. Allocated memory is still 935.3MB. Free memory was 615.8MB in the beginning and 610.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 15:09:09,995 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 92.3MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.45ms. Allocated memory is still 159.4MB. Free memory was 100.7MB in the beginning and 124.5MB in the end (delta: -23.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.01ms. Allocated memory is still 159.4MB. Free memory was 124.5MB in the beginning and 122.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.69ms. Allocated memory is still 159.4MB. Free memory was 122.3MB in the beginning and 119.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 956.05ms. Allocated memory was 159.4MB in the beginning and 205.5MB in the end (delta: 46.1MB). Free memory was 119.0MB in the beginning and 167.9MB in the end (delta: -48.9MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. * TraceAbstraction took 25059.30ms. Allocated memory was 205.5MB in the beginning and 935.3MB in the end (delta: 729.8MB). Free memory was 167.9MB in the beginning and 615.8MB in the end (delta: -447.9MB). Peak memory consumption was 281.9MB. Max. memory is 16.1GB. * Witness Printer took 106.18ms. Allocated memory is still 935.3MB. Free memory was 615.8MB in the beginning and 610.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 127 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.9s, OverallIterations: 31, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1978 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1711 mSDsluCounter, 138 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 88 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5492 IncrementalHoareTripleChecker+Invalid, 5576 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 50 mSDtfsCounter, 5492 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 717 GetRequests, 516 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=324occurred in iteration=22, InterpolantAutomatonStates: 154, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1175 NumberOfCodeBlocks, 1175 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 1142 ConstructedInterpolants, 0 QuantifiedInterpolants, 2580 SizeOfPredicates, 32 NumberOfNonLiveVariables, 3562 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 54 InterpolantComputations, 29 PerfectInterpolantSequences, 582/634 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 15:09:10,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE