./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.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 fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:02:24,489 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:02:24,568 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 22:02:24,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:02:24,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:02:24,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:02:24,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:02:24,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:02:24,605 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:02:24,606 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:02:24,606 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 22:02:24,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 22:02:24,607 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:02:24,608 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:02:24,609 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:02:24,609 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:02:24,609 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 22:02:24,610 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 22:02:24,610 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:02:24,610 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 22:02:24,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:02:24,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 22:02:24,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 22:02:24,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 22:02:24,615 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:02:24,615 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 22:02:24,615 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:02:24,615 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 22:02:24,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:02:24,616 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:02:24,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:02:24,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:02:24,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 22:02:24,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 22:02:24,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:02:24,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:02:24,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 22:02:24,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 22:02:24,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:02:24,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 22:02:24,619 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 22:02:24,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 22:02:24,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 22:02:24,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 22:02:24,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 [2024-11-20 22:02:24,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:02:24,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:02:24,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:02:24,881 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:02:24,882 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:02:24,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-11-20 22:02:26,324 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:02:26,514 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:02:26,514 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-11-20 22:02:26,522 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65cd8a393/0944d957268e4f12a09aecbee0e270eb/FLAG605beff8f [2024-11-20 22:02:26,536 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65cd8a393/0944d957268e4f12a09aecbee0e270eb [2024-11-20 22:02:26,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:02:26,540 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:02:26,542 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:02:26,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:02:26,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:02:26,551 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:02:26" (1/1) ... [2024-11-20 22:02:26,552 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630bffe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26, skipping insertion in model container [2024-11-20 22:02:26,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:02:26" (1/1) ... [2024-11-20 22:02:26,582 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:02:26,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:02:26,829 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:02:26,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:02:26,887 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:02:26,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26 WrapperNode [2024-11-20 22:02:26,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:02:26,890 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:02:26,890 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:02:26,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:02:26,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26" (1/1) ... [2024-11-20 22:02:26,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26" (1/1) ... [2024-11-20 22:02:26,955 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 201 [2024-11-20 22:02:26,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:02:26,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:02:26,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:02:26,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:02:26,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26" (1/1) ... [2024-11-20 22:02:26,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26" (1/1) ... [2024-11-20 22:02:26,994 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26" (1/1) ... [2024-11-20 22:02:27,018 INFO L175 MemorySlicer]: Split 14 memory accesses to 2 slices as follows [2, 12]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-20 22:02:27,019 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26" (1/1) ... [2024-11-20 22:02:27,019 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26" (1/1) ... [2024-11-20 22:02:27,025 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26" (1/1) ... [2024-11-20 22:02:27,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26" (1/1) ... [2024-11-20 22:02:27,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26" (1/1) ... [2024-11-20 22:02:27,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26" (1/1) ... [2024-11-20 22:02:27,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:02:27,036 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:02:27,036 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:02:27,036 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:02:27,037 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26" (1/1) ... [2024-11-20 22:02:27,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:02:27,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:27,068 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) [2024-11-20 22:02:27,070 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 [2024-11-20 22:02:27,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 22:02:27,108 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 22:02:27,108 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 22:02:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 22:02:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 22:02:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 22:02:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 22:02:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 22:02:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 22:02:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 22:02:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 22:02:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 22:02:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:02:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:02:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 22:02:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 22:02:27,111 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 22:02:27,209 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:02:27,212 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:02:27,530 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 22:02:27,530 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:02:27,811 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:02:27,811 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-20 22:02:27,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:02:27 BoogieIcfgContainer [2024-11-20 22:02:27,811 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:02:27,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 22:02:27,816 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 22:02:27,819 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 22:02:27,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:02:26" (1/3) ... [2024-11-20 22:02:27,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9cf06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:02:27, skipping insertion in model container [2024-11-20 22:02:27,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:26" (2/3) ... [2024-11-20 22:02:27,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9cf06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:02:27, skipping insertion in model container [2024-11-20 22:02:27,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:02:27" (3/3) ... [2024-11-20 22:02:27,825 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2024-11-20 22:02:27,844 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 22:02:27,844 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-20 22:02:27,845 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 22:02:27,904 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 22:02:27,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-11-20 22:02:27,974 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-20 22:02:27,974 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 22:02:27,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-20 22:02:27,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-11-20 22:02:27,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 81 flow [2024-11-20 22:02:27,995 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 22:02:28,004 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;@2cc3f2db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 22:02:28,004 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-20 22:02:28,011 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 22:02:28,011 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-20 22:02:28,011 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 22:02:28,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:28,012 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 22:02:28,013 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:28,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:28,019 INFO L85 PathProgramCache]: Analyzing trace with hash 627926, now seen corresponding path program 1 times [2024-11-20 22:02:28,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:28,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186981324] [2024-11-20 22:02:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:28,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:28,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:28,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:28,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186981324] [2024-11-20 22:02:28,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186981324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:28,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:28,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:02:28,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247167622] [2024-11-20 22:02:28,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:28,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:02:28,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:28,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:02:28,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:02:28,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-20 22:02:28,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-20 22:02:28,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:28,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-20 22:02:28,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:28,519 INFO L124 PetriNetUnfolderBase]: 63/161 cut-off events. [2024-11-20 22:02:28,519 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-20 22:02:28,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 161 events. 63/161 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 597 event pairs, 42 based on Foata normal form. 2/146 useless extension candidates. Maximal degree in co-relation 245. Up to 107 conditions per place. [2024-11-20 22:02:28,522 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 16 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2024-11-20 22:02:28,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 121 flow [2024-11-20 22:02:28,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:02:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:02:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-11-20 22:02:28,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 22:02:28,535 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 81 flow. Second operand 4 states and 80 transitions. [2024-11-20 22:02:28,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 121 flow [2024-11-20 22:02:28,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 34 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 22:02:28,540 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 84 flow [2024-11-20 22:02:28,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2024-11-20 22:02:28,545 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2024-11-20 22:02:28,545 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 84 flow [2024-11-20 22:02:28,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-20 22:02:28,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:28,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-20 22:02:28,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 22:02:28,546 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:28,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash 19466337, now seen corresponding path program 1 times [2024-11-20 22:02:28,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:28,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162294498] [2024-11-20 22:02:28,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:28,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:28,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:28,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162294498] [2024-11-20 22:02:28,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162294498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:28,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:28,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:02:28,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920967538] [2024-11-20 22:02:28,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:28,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:02:28,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:28,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:02:28,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:02:28,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-20 22:02:28,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-20 22:02:28,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:28,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-20 22:02:28,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:28,750 INFO L124 PetriNetUnfolderBase]: 65/169 cut-off events. [2024-11-20 22:02:28,750 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-20 22:02:28,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 169 events. 65/169 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 643 event pairs, 42 based on Foata normal form. 2/156 useless extension candidates. Maximal degree in co-relation 264. Up to 116 conditions per place. [2024-11-20 22:02:28,752 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-11-20 22:02:28,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 40 transitions, 162 flow [2024-11-20 22:02:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:02:28,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:02:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-20 22:02:28,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-11-20 22:02:28,754 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 84 flow. Second operand 4 states and 86 transitions. [2024-11-20 22:02:28,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 40 transitions, 162 flow [2024-11-20 22:02:28,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 140 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 22:02:28,756 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 128 flow [2024-11-20 22:02:28,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2024-11-20 22:02:28,757 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-11-20 22:02:28,757 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 128 flow [2024-11-20 22:02:28,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-20 22:02:28,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:28,758 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-20 22:02:28,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 22:02:28,758 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:28,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:28,759 INFO L85 PathProgramCache]: Analyzing trace with hash 101669241, now seen corresponding path program 1 times [2024-11-20 22:02:28,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:28,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775552915] [2024-11-20 22:02:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:28,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:28,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:28,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:28,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775552915] [2024-11-20 22:02:28,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775552915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:28,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093352970] [2024-11-20 22:02:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:28,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:28,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:28,917 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) [2024-11-20 22:02:28,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 22:02:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:28,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:02:28,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:29,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:29,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093352970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:29,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:29,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-20 22:02:29,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594705921] [2024-11-20 22:02:29,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:29,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 22:02:29,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:29,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 22:02:29,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-20 22:02:29,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-20 22:02:29,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 128 flow. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 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) [2024-11-20 22:02:29,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:29,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-20 22:02:29,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:29,331 INFO L124 PetriNetUnfolderBase]: 71/193 cut-off events. [2024-11-20 22:02:29,332 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-20 22:02:29,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 193 events. 71/193 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 780 event pairs, 42 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 275. Up to 119 conditions per place. [2024-11-20 22:02:29,335 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 25 changer transitions 0/58 dead transitions. [2024-11-20 22:02:29,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 298 flow [2024-11-20 22:02:29,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:02:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:02:29,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-11-20 22:02:29,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-20 22:02:29,339 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 128 flow. Second operand 10 states and 192 transitions. [2024-11-20 22:02:29,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 298 flow [2024-11-20 22:02:29,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 22:02:29,344 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 290 flow [2024-11-20 22:02:29,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2024-11-20 22:02:29,347 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-11-20 22:02:29,347 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 290 flow [2024-11-20 22:02:29,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 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) [2024-11-20 22:02:29,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:29,348 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:29,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 22:02:29,552 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 [2024-11-20 22:02:29,553 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:29,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:29,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1747027574, now seen corresponding path program 1 times [2024-11-20 22:02:29,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:29,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463540714] [2024-11-20 22:02:29,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:29,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:29,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:29,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463540714] [2024-11-20 22:02:29,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463540714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:29,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:29,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:02:29,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872092192] [2024-11-20 22:02:29,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:29,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:02:29,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:29,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:02:29,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:02:29,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-20 22:02:29,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-11-20 22:02:29,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:29,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-20 22:02:29,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:29,754 INFO L124 PetriNetUnfolderBase]: 165/365 cut-off events. [2024-11-20 22:02:29,755 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-20 22:02:29,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 365 events. 165/365 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1578 event pairs, 67 based on Foata normal form. 10/356 useless extension candidates. Maximal degree in co-relation 704. Up to 219 conditions per place. [2024-11-20 22:02:29,758 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 61 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-11-20 22:02:29,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 460 flow [2024-11-20 22:02:29,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:02:29,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:02:29,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-11-20 22:02:29,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-11-20 22:02:29,759 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 290 flow. Second operand 4 states and 103 transitions. [2024-11-20 22:02:29,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 460 flow [2024-11-20 22:02:29,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 76 transitions, 396 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-20 22:02:29,763 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 255 flow [2024-11-20 22:02:29,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2024-11-20 22:02:29,764 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-11-20 22:02:29,764 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 255 flow [2024-11-20 22:02:29,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-11-20 22:02:29,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:29,765 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:29,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 22:02:29,765 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:29,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:29,765 INFO L85 PathProgramCache]: Analyzing trace with hash 674683126, now seen corresponding path program 1 times [2024-11-20 22:02:29,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:29,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596053849] [2024-11-20 22:02:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:29,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:29,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:29,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596053849] [2024-11-20 22:02:29,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596053849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:29,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:29,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:02:29,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683982639] [2024-11-20 22:02:29,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:29,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:02:29,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:29,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:02:29,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:02:29,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-20 22:02:29,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-20 22:02:29,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:29,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-20 22:02:29,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:30,002 INFO L124 PetriNetUnfolderBase]: 248/490 cut-off events. [2024-11-20 22:02:30,003 INFO L125 PetriNetUnfolderBase]: For 190/239 co-relation queries the response was YES. [2024-11-20 22:02:30,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 490 events. 248/490 cut-off events. For 190/239 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2056 event pairs, 117 based on Foata normal form. 30/499 useless extension candidates. Maximal degree in co-relation 1083. Up to 310 conditions per place. [2024-11-20 22:02:30,009 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 65 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-11-20 22:02:30,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 81 transitions, 461 flow [2024-11-20 22:02:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:02:30,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:02:30,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-20 22:02:30,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-11-20 22:02:30,013 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 255 flow. Second operand 4 states and 101 transitions. [2024-11-20 22:02:30,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 81 transitions, 461 flow [2024-11-20 22:02:30,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:02:30,019 INFO L231 Difference]: Finished difference. Result has 57 places, 64 transitions, 281 flow [2024-11-20 22:02:30,019 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=57, PETRI_TRANSITIONS=64} [2024-11-20 22:02:30,022 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2024-11-20 22:02:30,023 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 64 transitions, 281 flow [2024-11-20 22:02:30,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-20 22:02:30,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:30,023 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:30,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 22:02:30,023 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:30,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash 764148641, now seen corresponding path program 1 times [2024-11-20 22:02:30,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:30,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398651571] [2024-11-20 22:02:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:30,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:02:30,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:30,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398651571] [2024-11-20 22:02:30,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398651571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:30,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:30,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:02:30,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995071448] [2024-11-20 22:02:30,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:30,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:02:30,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:30,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:02:30,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:02:30,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-20 22:02:30,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:02:30,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:30,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-20 22:02:30,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:30,285 INFO L124 PetriNetUnfolderBase]: 190/468 cut-off events. [2024-11-20 22:02:30,286 INFO L125 PetriNetUnfolderBase]: For 218/249 co-relation queries the response was YES. [2024-11-20 22:02:30,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 468 events. 190/468 cut-off events. For 218/249 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2111 event pairs, 122 based on Foata normal form. 25/484 useless extension candidates. Maximal degree in co-relation 1095. Up to 273 conditions per place. [2024-11-20 22:02:30,289 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 55 selfloop transitions, 3 changer transitions 14/88 dead transitions. [2024-11-20 22:02:30,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 88 transitions, 529 flow [2024-11-20 22:02:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:02:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:02:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-20 22:02:30,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68125 [2024-11-20 22:02:30,291 INFO L175 Difference]: Start difference. First operand has 57 places, 64 transitions, 281 flow. Second operand 4 states and 109 transitions. [2024-11-20 22:02:30,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 88 transitions, 529 flow [2024-11-20 22:02:30,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 88 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:02:30,296 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 289 flow [2024-11-20 22:02:30,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2024-11-20 22:02:30,297 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2024-11-20 22:02:30,297 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 289 flow [2024-11-20 22:02:30,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:02:30,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:30,297 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-20 22:02:30,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 22:02:30,298 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:30,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2071405983, now seen corresponding path program 2 times [2024-11-20 22:02:30,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:30,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723523126] [2024-11-20 22:02:30,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:30,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:30,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:30,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723523126] [2024-11-20 22:02:30,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723523126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:30,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32377576] [2024-11-20 22:02:30,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:02:30,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:30,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:30,460 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) [2024-11-20 22:02:30,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 22:02:30,527 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:02:30,528 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:02:30,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:02:30,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 22:02:30,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 22:02:30,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32377576] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:30,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:30,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-20 22:02:30,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394305946] [2024-11-20 22:02:30,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:30,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 22:02:30,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:30,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 22:02:30,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-20 22:02:30,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-20 22:02:30,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 289 flow. Second operand has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 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) [2024-11-20 22:02:30,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:30,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-20 22:02:30,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:30,968 INFO L124 PetriNetUnfolderBase]: 193/428 cut-off events. [2024-11-20 22:02:30,968 INFO L125 PetriNetUnfolderBase]: For 295/326 co-relation queries the response was YES. [2024-11-20 22:02:30,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 428 events. 193/428 cut-off events. For 295/326 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1847 event pairs, 122 based on Foata normal form. 15/405 useless extension candidates. Maximal degree in co-relation 1038. Up to 314 conditions per place. [2024-11-20 22:02:30,972 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 34 changer transitions 0/69 dead transitions. [2024-11-20 22:02:30,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 69 transitions, 418 flow [2024-11-20 22:02:30,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-20 22:02:30,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-20 22:02:30,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 390 transitions. [2024-11-20 22:02:30,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-11-20 22:02:30,974 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 289 flow. Second operand 24 states and 390 transitions. [2024-11-20 22:02:30,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 69 transitions, 418 flow [2024-11-20 22:02:30,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 69 transitions, 414 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-20 22:02:30,980 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 385 flow [2024-11-20 22:02:30,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=385, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2024-11-20 22:02:30,982 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2024-11-20 22:02:30,982 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 385 flow [2024-11-20 22:02:30,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 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) [2024-11-20 22:02:30,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:30,983 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:30,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 22:02:31,187 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,SelfDestructingSolverStorable6 [2024-11-20 22:02:31,188 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:31,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:31,189 INFO L85 PathProgramCache]: Analyzing trace with hash 485609145, now seen corresponding path program 1 times [2024-11-20 22:02:31,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:31,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587838331] [2024-11-20 22:02:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:31,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:02:31,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:31,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587838331] [2024-11-20 22:02:31,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587838331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:31,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185010793] [2024-11-20 22:02:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:31,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:31,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:31,294 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) [2024-11-20 22:02:31,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 22:02:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:31,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:02:31,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:02:31,414 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:02:31,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185010793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:31,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:02:31,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-20 22:02:31,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348085196] [2024-11-20 22:02:31,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:31,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:02:31,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:31,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:02:31,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:02:31,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-20 22:02:31,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-11-20 22:02:31,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:31,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-20 22:02:31,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:31,604 INFO L124 PetriNetUnfolderBase]: 259/558 cut-off events. [2024-11-20 22:02:31,604 INFO L125 PetriNetUnfolderBase]: For 336/371 co-relation queries the response was YES. [2024-11-20 22:02:31,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 558 events. 259/558 cut-off events. For 336/371 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2512 event pairs, 41 based on Foata normal form. 26/554 useless extension candidates. Maximal degree in co-relation 1454. Up to 174 conditions per place. [2024-11-20 22:02:31,608 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 87 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2024-11-20 22:02:31,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 105 transitions, 701 flow [2024-11-20 22:02:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:02:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:02:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-11-20 22:02:31,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-20 22:02:31,609 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 385 flow. Second operand 6 states and 145 transitions. [2024-11-20 22:02:31,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 105 transitions, 701 flow [2024-11-20 22:02:31,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 600 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-11-20 22:02:31,615 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 294 flow [2024-11-20 22:02:31,615 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2024-11-20 22:02:31,617 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2024-11-20 22:02:31,617 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 294 flow [2024-11-20 22:02:31,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-11-20 22:02:31,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:31,617 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:31,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 22:02:31,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:31,818 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:31,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:31,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2125985042, now seen corresponding path program 1 times [2024-11-20 22:02:31,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:31,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37012536] [2024-11-20 22:02:31,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:31,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:02:31,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:31,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37012536] [2024-11-20 22:02:31,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37012536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:31,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677430541] [2024-11-20 22:02:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:31,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:31,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:31,948 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) [2024-11-20 22:02:31,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 22:02:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:32,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:02:32,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:02:32,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:02:32,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677430541] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:32,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:32,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:02:32,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655306789] [2024-11-20 22:02:32,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:32,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:02:32,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:32,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:02:32,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:02:32,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-20 22:02:32,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 294 flow. Second operand has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 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) [2024-11-20 22:02:32,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:32,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-20 22:02:32,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:32,447 INFO L124 PetriNetUnfolderBase]: 499/1012 cut-off events. [2024-11-20 22:02:32,448 INFO L125 PetriNetUnfolderBase]: For 855/925 co-relation queries the response was YES. [2024-11-20 22:02:32,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2848 conditions, 1012 events. 499/1012 cut-off events. For 855/925 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4596 event pairs, 113 based on Foata normal form. 66/1051 useless extension candidates. Maximal degree in co-relation 2777. Up to 374 conditions per place. [2024-11-20 22:02:32,455 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 129 selfloop transitions, 13 changer transitions 0/153 dead transitions. [2024-11-20 22:02:32,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 153 transitions, 904 flow [2024-11-20 22:02:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:02:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:02:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-11-20 22:02:32,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6175 [2024-11-20 22:02:32,457 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 294 flow. Second operand 10 states and 247 transitions. [2024-11-20 22:02:32,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 153 transitions, 904 flow [2024-11-20 22:02:32,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 153 transitions, 874 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-20 22:02:32,461 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 362 flow [2024-11-20 22:02:32,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=362, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-11-20 22:02:32,463 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2024-11-20 22:02:32,463 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 362 flow [2024-11-20 22:02:32,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 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) [2024-11-20 22:02:32,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:32,464 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:32,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 22:02:32,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:32,665 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:32,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:32,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1767712106, now seen corresponding path program 1 times [2024-11-20 22:02:32,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:32,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923184369] [2024-11-20 22:02:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:32,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:32,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 22:02:32,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:32,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923184369] [2024-11-20 22:02:32,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923184369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:32,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:32,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 22:02:32,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924508009] [2024-11-20 22:02:32,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:32,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 22:02:32,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:32,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 22:02:32,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 22:02:32,758 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-20 22:02:32,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:02:32,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:32,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-20 22:02:32,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:32,932 INFO L124 PetriNetUnfolderBase]: 419/1060 cut-off events. [2024-11-20 22:02:32,932 INFO L125 PetriNetUnfolderBase]: For 1070/1078 co-relation queries the response was YES. [2024-11-20 22:02:32,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 1060 events. 419/1060 cut-off events. For 1070/1078 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5348 event pairs, 136 based on Foata normal form. 11/1059 useless extension candidates. Maximal degree in co-relation 2828. Up to 479 conditions per place. [2024-11-20 22:02:32,941 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 59 selfloop transitions, 10 changer transitions 10/96 dead transitions. [2024-11-20 22:02:32,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 589 flow [2024-11-20 22:02:32,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:02:32,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:02:32,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-11-20 22:02:32,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.67 [2024-11-20 22:02:32,942 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 362 flow. Second operand 5 states and 134 transitions. [2024-11-20 22:02:32,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 589 flow [2024-11-20 22:02:32,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 574 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-20 22:02:32,947 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 393 flow [2024-11-20 22:02:32,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-11-20 22:02:32,948 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 48 predicate places. [2024-11-20 22:02:32,948 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 393 flow [2024-11-20 22:02:32,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:02:32,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:32,949 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-20 22:02:32,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 22:02:32,949 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:32,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:32,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1541184979, now seen corresponding path program 1 times [2024-11-20 22:02:32,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:32,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037898] [2024-11-20 22:02:32,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:32,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:33,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:33,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037898] [2024-11-20 22:02:33,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:33,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453506808] [2024-11-20 22:02:33,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:33,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:33,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:33,127 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) [2024-11-20 22:02:33,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 22:02:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:33,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 22:02:33,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:33,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:33,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453506808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:33,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:33,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-20 22:02:33,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776695016] [2024-11-20 22:02:33,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:33,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-20 22:02:33,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:33,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-20 22:02:33,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-20 22:02:33,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-20 22:02:33,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 393 flow. Second operand has 28 states, 28 states have (on average 15.071428571428571) internal successors, (422), 28 states have internal predecessors, (422), 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) [2024-11-20 22:02:33,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:33,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-20 22:02:33,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:34,010 INFO L124 PetriNetUnfolderBase]: 396/849 cut-off events. [2024-11-20 22:02:34,011 INFO L125 PetriNetUnfolderBase]: For 1598/1618 co-relation queries the response was YES. [2024-11-20 22:02:34,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2727 conditions, 849 events. 396/849 cut-off events. For 1598/1618 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3969 event pairs, 239 based on Foata normal form. 14/782 useless extension candidates. Maximal degree in co-relation 2453. Up to 612 conditions per place. [2024-11-20 22:02:34,018 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 32 selfloop transitions, 72 changer transitions 0/120 dead transitions. [2024-11-20 22:02:34,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 120 transitions, 832 flow [2024-11-20 22:02:34,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-20 22:02:34,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-20 22:02:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 463 transitions. [2024-11-20 22:02:34,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44519230769230766 [2024-11-20 22:02:34,021 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 393 flow. Second operand 26 states and 463 transitions. [2024-11-20 22:02:34,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 120 transitions, 832 flow [2024-11-20 22:02:34,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 120 transitions, 811 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-20 22:02:34,027 INFO L231 Difference]: Finished difference. Result has 115 places, 120 transitions, 799 flow [2024-11-20 22:02:34,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=799, PETRI_PLACES=115, PETRI_TRANSITIONS=120} [2024-11-20 22:02:34,027 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2024-11-20 22:02:34,028 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 120 transitions, 799 flow [2024-11-20 22:02:34,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 15.071428571428571) internal successors, (422), 28 states have internal predecessors, (422), 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) [2024-11-20 22:02:34,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:34,028 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:34,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 22:02:34,228 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,SelfDestructingSolverStorable10 [2024-11-20 22:02:34,229 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:34,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:34,229 INFO L85 PathProgramCache]: Analyzing trace with hash 674859671, now seen corresponding path program 1 times [2024-11-20 22:02:34,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:34,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397343147] [2024-11-20 22:02:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:34,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:02:34,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:34,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397343147] [2024-11-20 22:02:34,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397343147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:34,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209692037] [2024-11-20 22:02:34,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:34,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:34,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:34,311 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) [2024-11-20 22:02:34,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 22:02:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:34,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:02:34,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:02:34,432 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:02:34,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209692037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:34,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:02:34,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-20 22:02:34,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920620596] [2024-11-20 22:02:34,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:34,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:02:34,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:02:34,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:02:34,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-20 22:02:34,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 120 transitions, 799 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2024-11-20 22:02:34,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:34,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-20 22:02:34,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:34,693 INFO L124 PetriNetUnfolderBase]: 531/1107 cut-off events. [2024-11-20 22:02:34,693 INFO L125 PetriNetUnfolderBase]: For 1596/1613 co-relation queries the response was YES. [2024-11-20 22:02:34,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 1107 events. 531/1107 cut-off events. For 1596/1613 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5402 event pairs, 93 based on Foata normal form. 25/1086 useless extension candidates. Maximal degree in co-relation 3351. Up to 365 conditions per place. [2024-11-20 22:02:34,702 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 157 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2024-11-20 22:02:34,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 177 transitions, 1431 flow [2024-11-20 22:02:34,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:02:34,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:02:34,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-11-20 22:02:34,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-11-20 22:02:34,703 INFO L175 Difference]: Start difference. First operand has 115 places, 120 transitions, 799 flow. Second operand 6 states and 141 transitions. [2024-11-20 22:02:34,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 177 transitions, 1431 flow [2024-11-20 22:02:34,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 177 transitions, 1246 flow, removed 54 selfloop flow, removed 12 redundant places. [2024-11-20 22:02:34,712 INFO L231 Difference]: Finished difference. Result has 107 places, 119 transitions, 624 flow [2024-11-20 22:02:34,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=624, PETRI_PLACES=107, PETRI_TRANSITIONS=119} [2024-11-20 22:02:34,713 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2024-11-20 22:02:34,713 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 119 transitions, 624 flow [2024-11-20 22:02:34,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2024-11-20 22:02:34,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:34,713 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:34,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 22:02:34,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:34,914 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:34,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:34,915 INFO L85 PathProgramCache]: Analyzing trace with hash -554186023, now seen corresponding path program 1 times [2024-11-20 22:02:34,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:34,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837366784] [2024-11-20 22:02:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:34,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:02:35,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:35,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837366784] [2024-11-20 22:02:35,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837366784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:35,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657019011] [2024-11-20 22:02:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:35,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:35,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:35,025 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) [2024-11-20 22:02:35,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 22:02:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:35,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:02:35,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:02:35,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:02:35,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657019011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:35,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:35,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:02:35,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545219352] [2024-11-20 22:02:35,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:35,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:02:35,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:35,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:02:35,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:02:35,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-20 22:02:35,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 119 transitions, 624 flow. Second operand has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 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) [2024-11-20 22:02:35,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:35,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-20 22:02:35,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:35,597 INFO L124 PetriNetUnfolderBase]: 1011/1970 cut-off events. [2024-11-20 22:02:35,597 INFO L125 PetriNetUnfolderBase]: For 3049/3102 co-relation queries the response was YES. [2024-11-20 22:02:35,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6244 conditions, 1970 events. 1011/1970 cut-off events. For 3049/3102 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10015 event pairs, 187 based on Foata normal form. 75/2028 useless extension candidates. Maximal degree in co-relation 6132. Up to 745 conditions per place. [2024-11-20 22:02:35,616 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 219 selfloop transitions, 13 changer transitions 0/245 dead transitions. [2024-11-20 22:02:35,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 245 transitions, 1764 flow [2024-11-20 22:02:35,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:02:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:02:35,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-11-20 22:02:35,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5975 [2024-11-20 22:02:35,617 INFO L175 Difference]: Start difference. First operand has 107 places, 119 transitions, 624 flow. Second operand 10 states and 239 transitions. [2024-11-20 22:02:35,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 245 transitions, 1764 flow [2024-11-20 22:02:35,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 245 transitions, 1734 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-20 22:02:35,628 INFO L231 Difference]: Finished difference. Result has 115 places, 128 transitions, 692 flow [2024-11-20 22:02:35,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=692, PETRI_PLACES=115, PETRI_TRANSITIONS=128} [2024-11-20 22:02:35,629 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2024-11-20 22:02:35,629 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 128 transitions, 692 flow [2024-11-20 22:02:35,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 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) [2024-11-20 22:02:35,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:35,629 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:35,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-20 22:02:35,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:35,831 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:35,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:35,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2093030102, now seen corresponding path program 1 times [2024-11-20 22:02:35,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:35,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135514149] [2024-11-20 22:02:35,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:35,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:02:36,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:36,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135514149] [2024-11-20 22:02:36,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135514149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:36,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239085417] [2024-11-20 22:02:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:36,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:36,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:36,008 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) [2024-11-20 22:02:36,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 22:02:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:36,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 22:02:36,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:02:36,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:36,296 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:02:36,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239085417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:36,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:36,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-20 22:02:36,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958072146] [2024-11-20 22:02:36,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:36,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-20 22:02:36,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:36,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-20 22:02:36,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-20 22:02:36,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-20 22:02:36,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 128 transitions, 692 flow. Second operand has 24 states, 24 states have (on average 16.833333333333332) internal successors, (404), 24 states have internal predecessors, (404), 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) [2024-11-20 22:02:36,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:36,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-20 22:02:36,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:37,291 INFO L124 PetriNetUnfolderBase]: 2001/3791 cut-off events. [2024-11-20 22:02:37,292 INFO L125 PetriNetUnfolderBase]: For 8879/9001 co-relation queries the response was YES. [2024-11-20 22:02:37,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12261 conditions, 3791 events. 2001/3791 cut-off events. For 8879/9001 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 20185 event pairs, 161 based on Foata normal form. 156/3939 useless extension candidates. Maximal degree in co-relation 12147. Up to 890 conditions per place. [2024-11-20 22:02:37,411 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 413 selfloop transitions, 31 changer transitions 0/457 dead transitions. [2024-11-20 22:02:37,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 457 transitions, 3480 flow [2024-11-20 22:02:37,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-20 22:02:37,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-20 22:02:37,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 538 transitions. [2024-11-20 22:02:37,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6113636363636363 [2024-11-20 22:02:37,414 INFO L175 Difference]: Start difference. First operand has 115 places, 128 transitions, 692 flow. Second operand 22 states and 538 transitions. [2024-11-20 22:02:37,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 457 transitions, 3480 flow [2024-11-20 22:02:37,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 457 transitions, 3289 flow, removed 63 selfloop flow, removed 2 redundant places. [2024-11-20 22:02:37,432 INFO L231 Difference]: Finished difference. Result has 140 places, 146 transitions, 887 flow [2024-11-20 22:02:37,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=887, PETRI_PLACES=140, PETRI_TRANSITIONS=146} [2024-11-20 22:02:37,433 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 101 predicate places. [2024-11-20 22:02:37,433 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 146 transitions, 887 flow [2024-11-20 22:02:37,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.833333333333332) internal successors, (404), 24 states have internal predecessors, (404), 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) [2024-11-20 22:02:37,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:37,434 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:37,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 22:02:37,634 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,SelfDestructingSolverStorable13 [2024-11-20 22:02:37,634 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:37,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:37,635 INFO L85 PathProgramCache]: Analyzing trace with hash 669608307, now seen corresponding path program 2 times [2024-11-20 22:02:37,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:37,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297997653] [2024-11-20 22:02:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:37,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:02:37,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:37,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297997653] [2024-11-20 22:02:37,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297997653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:37,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040918421] [2024-11-20 22:02:37,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:02:37,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:37,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:37,895 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) [2024-11-20 22:02:37,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 22:02:37,975 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:02:37,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:02:37,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:02:37,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:38,049 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-20 22:02:38,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-20 22:02:38,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040918421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:38,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:38,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-20 22:02:38,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121058719] [2024-11-20 22:02:38,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:38,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 22:02:38,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:38,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 22:02:38,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-20 22:02:38,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-20 22:02:38,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 146 transitions, 887 flow. Second operand has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 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) [2024-11-20 22:02:38,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:38,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-20 22:02:38,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:39,222 INFO L124 PetriNetUnfolderBase]: 2952/4981 cut-off events. [2024-11-20 22:02:39,223 INFO L125 PetriNetUnfolderBase]: For 13966/14368 co-relation queries the response was YES. [2024-11-20 22:02:39,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17784 conditions, 4981 events. 2952/4981 cut-off events. For 13966/14368 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 25712 event pairs, 234 based on Foata normal form. 98/5024 useless extension candidates. Maximal degree in co-relation 17663. Up to 1112 conditions per place. [2024-11-20 22:02:39,279 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 278 selfloop transitions, 21 changer transitions 156/473 dead transitions. [2024-11-20 22:02:39,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 473 transitions, 4307 flow [2024-11-20 22:02:39,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 22:02:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-20 22:02:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 333 transitions. [2024-11-20 22:02:39,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-11-20 22:02:39,281 INFO L175 Difference]: Start difference. First operand has 140 places, 146 transitions, 887 flow. Second operand 15 states and 333 transitions. [2024-11-20 22:02:39,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 473 transitions, 4307 flow [2024-11-20 22:02:39,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 473 transitions, 3519 flow, removed 269 selfloop flow, removed 13 redundant places. [2024-11-20 22:02:39,311 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 810 flow [2024-11-20 22:02:39,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=810, PETRI_PLACES=141, PETRI_TRANSITIONS=138} [2024-11-20 22:02:39,312 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 102 predicate places. [2024-11-20 22:02:39,313 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 810 flow [2024-11-20 22:02:39,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 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) [2024-11-20 22:02:39,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:39,313 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2024-11-20 22:02:39,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-20 22:02:39,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 22:02:39,514 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:39,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:39,515 INFO L85 PathProgramCache]: Analyzing trace with hash 250954686, now seen corresponding path program 2 times [2024-11-20 22:02:39,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:39,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449974187] [2024-11-20 22:02:39,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:39,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:40,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:40,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449974187] [2024-11-20 22:02:40,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449974187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:40,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117950614] [2024-11-20 22:02:40,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:02:40,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:40,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:40,059 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) [2024-11-20 22:02:40,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 22:02:40,134 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:02:40,134 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:02:40,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:02:40,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-20 22:02:40,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-20 22:02:40,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117950614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:40,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:40,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2024-11-20 22:02:40,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206530356] [2024-11-20 22:02:40,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:40,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-20 22:02:40,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-20 22:02:40,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-11-20 22:02:40,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-20 22:02:40,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 138 transitions, 810 flow. Second operand has 31 states, 31 states have (on average 15.096774193548388) internal successors, (468), 31 states have internal predecessors, (468), 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) [2024-11-20 22:02:40,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:40,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-20 22:02:40,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:41,466 INFO L124 PetriNetUnfolderBase]: 1410/3196 cut-off events. [2024-11-20 22:02:41,466 INFO L125 PetriNetUnfolderBase]: For 5731/5783 co-relation queries the response was YES. [2024-11-20 22:02:41,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10880 conditions, 3196 events. 1410/3196 cut-off events. For 5731/5783 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 19279 event pairs, 995 based on Foata normal form. 4/3152 useless extension candidates. Maximal degree in co-relation 10752. Up to 2107 conditions per place. [2024-11-20 22:02:41,488 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 34 selfloop transitions, 83 changer transitions 1/143 dead transitions. [2024-11-20 22:02:41,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 143 transitions, 1052 flow [2024-11-20 22:02:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-20 22:02:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-20 22:02:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 531 transitions. [2024-11-20 22:02:41,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4282258064516129 [2024-11-20 22:02:41,490 INFO L175 Difference]: Start difference. First operand has 141 places, 138 transitions, 810 flow. Second operand 31 states and 531 transitions. [2024-11-20 22:02:41,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 143 transitions, 1052 flow [2024-11-20 22:02:41,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 143 transitions, 947 flow, removed 11 selfloop flow, removed 23 redundant places. [2024-11-20 22:02:41,504 INFO L231 Difference]: Finished difference. Result has 145 places, 142 transitions, 870 flow [2024-11-20 22:02:41,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=870, PETRI_PLACES=145, PETRI_TRANSITIONS=142} [2024-11-20 22:02:41,505 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 106 predicate places. [2024-11-20 22:02:41,506 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 870 flow [2024-11-20 22:02:41,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 15.096774193548388) internal successors, (468), 31 states have internal predecessors, (468), 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) [2024-11-20 22:02:41,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:41,506 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:41,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-20 22:02:41,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-20 22:02:41,711 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-20 22:02:41,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:41,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1441886710, now seen corresponding path program 2 times [2024-11-20 22:02:41,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:41,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411952553] [2024-11-20 22:02:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:41,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:02:42,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:42,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411952553] [2024-11-20 22:02:42,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411952553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:42,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743550701] [2024-11-20 22:02:42,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:02:42,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:42,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:42,277 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) [2024-11-20 22:02:42,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 22:02:42,361 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:02:42,362 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:02:42,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:02:42,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-20 22:02:42,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:02:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-20 22:02:42,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743550701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:02:42,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:02:42,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 3, 3] total 26 [2024-11-20 22:02:42,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368641832] [2024-11-20 22:02:42,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:02:42,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-20 22:02:42,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:42,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-20 22:02:42,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2024-11-20 22:02:42,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-20 22:02:42,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 142 transitions, 870 flow. Second operand has 27 states, 27 states have (on average 16.59259259259259) internal successors, (448), 27 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:02:42,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:42,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-20 22:02:42,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:43,679 INFO L124 PetriNetUnfolderBase]: 2890/5103 cut-off events. [2024-11-20 22:02:43,679 INFO L125 PetriNetUnfolderBase]: For 13965/14511 co-relation queries the response was YES. [2024-11-20 22:02:43,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16059 conditions, 5103 events. 2890/5103 cut-off events. For 13965/14511 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 28280 event pairs, 56 based on Foata normal form. 64/5152 useless extension candidates. Maximal degree in co-relation 15661. Up to 1000 conditions per place. [2024-11-20 22:02:43,708 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 0 selfloop transitions, 0 changer transitions 599/599 dead transitions. [2024-11-20 22:02:43,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 599 transitions, 4292 flow [2024-11-20 22:02:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-20 22:02:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-20 22:02:43,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 613 transitions. [2024-11-20 22:02:43,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675925925925925 [2024-11-20 22:02:43,713 INFO L175 Difference]: Start difference. First operand has 145 places, 142 transitions, 870 flow. Second operand 27 states and 613 transitions. [2024-11-20 22:02:43,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 599 transitions, 4292 flow [2024-11-20 22:02:43,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 599 transitions, 4021 flow, removed 52 selfloop flow, removed 37 redundant places. [2024-11-20 22:02:43,791 INFO L231 Difference]: Finished difference. Result has 132 places, 0 transitions, 0 flow [2024-11-20 22:02:43,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=0, PETRI_PLACES=132, PETRI_TRANSITIONS=0} [2024-11-20 22:02:43,792 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2024-11-20 22:02:43,792 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 0 transitions, 0 flow [2024-11-20 22:02:43,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 16.59259259259259) internal successors, (448), 27 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:02:43,795 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2024-11-20 22:02:43,796 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2024-11-20 22:02:43,796 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-11-20 22:02:43,796 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-11-20 22:02:43,796 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-11-20 22:02:43,796 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-11-20 22:02:43,796 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2024-11-20 22:02:43,796 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2024-11-20 22:02:43,796 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-11-20 22:02:43,797 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2024-11-20 22:02:43,797 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-11-20 22:02:43,797 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-11-20 22:02:43,797 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-11-20 22:02:43,797 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-11-20 22:02:43,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 22:02:43,997 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,SelfDestructingSolverStorable16 [2024-11-20 22:02:43,998 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:44,003 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 22:02:44,003 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 22:02:44,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:02:44 BasicIcfg [2024-11-20 22:02:44,007 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 22:02:44,007 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 22:02:44,007 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 22:02:44,008 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 22:02:44,008 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:02:27" (3/4) ... [2024-11-20 22:02:44,009 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 22:02:44,011 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-20 22:02:44,011 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-20 22:02:44,016 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2024-11-20 22:02:44,017 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2024-11-20 22:02:44,017 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-20 22:02:44,017 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-20 22:02:44,114 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 22:02:44,114 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 22:02:44,114 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 22:02:44,115 INFO L158 Benchmark]: Toolchain (without parser) took 17574.95ms. Allocated memory was 176.2MB in the beginning and 564.1MB in the end (delta: 388.0MB). Free memory was 109.3MB in the beginning and 415.3MB in the end (delta: -305.9MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. [2024-11-20 22:02:44,115 INFO L158 Benchmark]: CDTParser took 1.06ms. Allocated memory is still 109.1MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 22:02:44,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.90ms. Allocated memory is still 176.2MB. Free memory was 109.1MB in the beginning and 95.7MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-20 22:02:44,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.30ms. Allocated memory is still 176.2MB. Free memory was 95.5MB in the beginning and 148.6MB in the end (delta: -53.1MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2024-11-20 22:02:44,116 INFO L158 Benchmark]: Boogie Preprocessor took 74.95ms. Allocated memory is still 176.2MB. Free memory was 148.6MB in the beginning and 146.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 22:02:44,116 INFO L158 Benchmark]: RCFGBuilder took 776.40ms. Allocated memory is still 176.2MB. Free memory was 146.1MB in the beginning and 88.1MB in the end (delta: 58.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-11-20 22:02:44,117 INFO L158 Benchmark]: TraceAbstraction took 16191.26ms. Allocated memory was 176.2MB in the beginning and 564.1MB in the end (delta: 388.0MB). Free memory was 87.4MB in the beginning and 420.0MB in the end (delta: -332.6MB). Peak memory consumption was 385.2MB. Max. memory is 16.1GB. [2024-11-20 22:02:44,117 INFO L158 Benchmark]: Witness Printer took 107.21ms. Allocated memory is still 564.1MB. Free memory was 420.0MB in the beginning and 415.3MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 22:02:44,118 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.06ms. Allocated memory is still 109.1MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.90ms. Allocated memory is still 176.2MB. Free memory was 109.1MB in the beginning and 95.7MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.30ms. Allocated memory is still 176.2MB. Free memory was 95.5MB in the beginning and 148.6MB in the end (delta: -53.1MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.95ms. Allocated memory is still 176.2MB. Free memory was 148.6MB in the beginning and 146.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 776.40ms. Allocated memory is still 176.2MB. Free memory was 146.1MB in the beginning and 88.1MB in the end (delta: 58.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 16191.26ms. Allocated memory was 176.2MB in the beginning and 564.1MB in the end (delta: 388.0MB). Free memory was 87.4MB in the beginning and 420.0MB in the end (delta: -332.6MB). Peak memory consumption was 385.2MB. Max. memory is 16.1GB. * Witness Printer took 107.21ms. Allocated memory is still 564.1MB. Free memory was 420.0MB in the beginning and 415.3MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: 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: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: 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, 57 locations, 14 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: 16.1s, OverallIterations: 17, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1848 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1761 mSDsluCounter, 422 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 403 mSDsCounter, 215 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3785 IncrementalHoareTripleChecker+Invalid, 4000 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 215 mSolverCounterUnsat, 19 mSDtfsCounter, 3785 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 808 GetRequests, 499 SyntacticMatches, 7 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2156 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=887occurred in iteration=14, InterpolantAutomatonStates: 212, 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: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 668 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 896 ConstructedInterpolants, 0 QuantifiedInterpolants, 2396 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1479 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 37 InterpolantComputations, 8 PerfectInterpolantSequences, 1052/2149 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-20 22:02:44,133 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