./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-vector-add.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 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:27:20,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:27:20,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:27:20,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:27:20,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:27:20,512 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:27:20,513 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:27:20,514 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:27:20,514 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:27:20,516 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:27:20,516 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:27:20,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:27:20,517 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:27:20,517 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:27:20,519 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:27:20,520 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:27:20,520 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:27:20,520 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:27:20,521 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:27:20,521 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:27:20,521 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:27:20,522 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:27:20,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:27:20,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:27:20,522 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:27:20,523 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:27:20,523 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:27:20,523 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:27:20,524 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:27:20,524 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:27:20,524 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:27:20,525 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:27:20,525 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:27:20,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:27:20,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:27:20,526 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:27:20,526 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:27:20,526 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:27:20,526 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:27:20,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:27:20,527 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:27:20,527 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:27:20,528 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:27:20,528 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:27:20,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2024-11-10 22:27:20,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:27:20,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:27:20,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:27:20,797 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:27:20,798 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:27:20,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-11-10 22:27:22,259 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:27:22,478 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:27:22,478 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-11-10 22:27:22,486 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b691a7d26/70f5cc7714164ab2bede40a95c352fc4/FLAG623a675ff [2024-11-10 22:27:22,499 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b691a7d26/70f5cc7714164ab2bede40a95c352fc4 [2024-11-10 22:27:22,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:27:22,504 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:27:22,506 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:27:22,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:27:22,512 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:27:22,513 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:27:22" (1/1) ... [2024-11-10 22:27:22,514 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed59589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22, skipping insertion in model container [2024-11-10 22:27:22,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:27:22" (1/1) ... [2024-11-10 22:27:22,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:27:22,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:27:22,809 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:27:22,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:27:22,866 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:27:22,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22 WrapperNode [2024-11-10 22:27:22,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:27:22,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:27:22,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:27:22,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:27:22,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22" (1/1) ... [2024-11-10 22:27:22,883 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22" (1/1) ... [2024-11-10 22:27:22,906 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 191 [2024-11-10 22:27:22,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:27:22,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:27:22,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:27:22,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:27:22,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22" (1/1) ... [2024-11-10 22:27:22,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22" (1/1) ... [2024-11-10 22:27:22,924 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22" (1/1) ... [2024-11-10 22:27:22,942 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2024-11-10 22:27:22,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22" (1/1) ... [2024-11-10 22:27:22,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22" (1/1) ... [2024-11-10 22:27:22,950 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22" (1/1) ... [2024-11-10 22:27:22,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22" (1/1) ... [2024-11-10 22:27:22,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22" (1/1) ... [2024-11-10 22:27:22,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22" (1/1) ... [2024-11-10 22:27:22,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:27:22,958 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:27:22,959 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:27:22,959 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:27:22,960 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22" (1/1) ... [2024-11-10 22:27:22,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:27:22,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:23,003 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) [2024-11-10 22:27:23,007 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 [2024-11-10 22:27:23,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:27:23,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:27:23,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:27:23,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:27:23,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:27:23,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:27:23,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:27:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:27:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:27:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:27:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:27:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:27:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:27:23,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:27:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:27:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:27:23,066 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:27:23,198 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:27:23,200 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:27:23,630 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:27:23,630 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:27:23,914 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:27:23,915 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:27:23,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:23 BoogieIcfgContainer [2024-11-10 22:27:23,915 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:27:23,917 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:27:23,917 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:27:23,920 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:27:23,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:27:22" (1/3) ... [2024-11-10 22:27:23,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566bec9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:27:23, skipping insertion in model container [2024-11-10 22:27:23,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:22" (2/3) ... [2024-11-10 22:27:23,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566bec9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:27:23, skipping insertion in model container [2024-11-10 22:27:23,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:23" (3/3) ... [2024-11-10 22:27:23,923 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2024-11-10 22:27:23,941 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:27:23,942 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-11-10 22:27:23,942 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:27:24,004 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:27:24,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 80 transitions, 181 flow [2024-11-10 22:27:24,089 INFO L124 PetriNetUnfolderBase]: 14/77 cut-off events. [2024-11-10 22:27:24,090 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:27:24,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 14/77 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 166 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-11-10 22:27:24,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 80 transitions, 181 flow [2024-11-10 22:27:24,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 75 transitions, 165 flow [2024-11-10 22:27:24,111 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:27:24,120 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;@1ead0eb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:27:24,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-10 22:27:24,151 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:27:24,155 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:27:24,155 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:27:24,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:24,156 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:27:24,157 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:24,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:24,163 INFO L85 PathProgramCache]: Analyzing trace with hash 20940799, now seen corresponding path program 1 times [2024-11-10 22:27:24,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:24,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877787877] [2024-11-10 22:27:24,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:24,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:24,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:24,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877787877] [2024-11-10 22:27:24,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877787877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:24,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:24,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:27:24,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274469393] [2024-11-10 22:27:24,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:24,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:24,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:24,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:24,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:24,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 80 [2024-11-10 22:27:24,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-10 22:27:24,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:24,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 80 [2024-11-10 22:27:24,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:24,841 INFO L124 PetriNetUnfolderBase]: 433/831 cut-off events. [2024-11-10 22:27:24,841 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-10 22:27:24,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 831 events. 433/831 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4469 event pairs, 306 based on Foata normal form. 131/897 useless extension candidates. Maximal degree in co-relation 1345. Up to 619 conditions per place. [2024-11-10 22:27:24,853 INFO L140 encePairwiseOnDemand]: 59/80 looper letters, 27 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-11-10 22:27:24,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 64 transitions, 217 flow [2024-11-10 22:27:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:24,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-10 22:27:24,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-10 22:27:24,868 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 165 flow. Second operand 4 states and 168 transitions. [2024-11-10 22:27:24,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 64 transitions, 217 flow [2024-11-10 22:27:24,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 208 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:27:24,876 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 154 flow [2024-11-10 22:27:24,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-11-10 22:27:24,885 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, -6 predicate places. [2024-11-10 22:27:24,887 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 154 flow [2024-11-10 22:27:24,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-10 22:27:24,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:24,888 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 22:27:24,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:27:24,888 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:24,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:24,890 INFO L85 PathProgramCache]: Analyzing trace with hash 649165355, now seen corresponding path program 1 times [2024-11-10 22:27:24,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:24,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752675392] [2024-11-10 22:27:24,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:24,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:24,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:24,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752675392] [2024-11-10 22:27:24,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752675392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:24,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:24,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:27:24,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586694334] [2024-11-10 22:27:24,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:24,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:24,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:24,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:24,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:25,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 80 [2024-11-10 22:27:25,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-10 22:27:25,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:25,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 80 [2024-11-10 22:27:25,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:25,274 INFO L124 PetriNetUnfolderBase]: 437/855 cut-off events. [2024-11-10 22:27:25,275 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-10 22:27:25,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1560 conditions, 855 events. 437/855 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4567 event pairs, 306 based on Foata normal form. 4/798 useless extension candidates. Maximal degree in co-relation 1456. Up to 636 conditions per place. [2024-11-10 22:27:25,283 INFO L140 encePairwiseOnDemand]: 63/80 looper letters, 36 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-11-10 22:27:25,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 294 flow [2024-11-10 22:27:25,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:25,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:25,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-11-10 22:27:25,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.540625 [2024-11-10 22:27:25,287 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 154 flow. Second operand 4 states and 173 transitions. [2024-11-10 22:27:25,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 294 flow [2024-11-10 22:27:25,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 256 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:27:25,291 INFO L231 Difference]: Finished difference. Result has 68 places, 76 transitions, 242 flow [2024-11-10 22:27:25,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=68, PETRI_TRANSITIONS=76} [2024-11-10 22:27:25,293 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2024-11-10 22:27:25,293 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 76 transitions, 242 flow [2024-11-10 22:27:25,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-10 22:27:25,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:25,294 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:27:25,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:27:25,294 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:25,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:25,297 INFO L85 PathProgramCache]: Analyzing trace with hash 553083053, now seen corresponding path program 1 times [2024-11-10 22:27:25,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:25,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375578434] [2024-11-10 22:27:25,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:25,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:25,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:25,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375578434] [2024-11-10 22:27:25,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375578434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:25,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12936787] [2024-11-10 22:27:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:25,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:25,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:25,441 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) [2024-11-10 22:27:25,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:27:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:25,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:25,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:25,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:25,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12936787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:25,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:25,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-10 22:27:25,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592671079] [2024-11-10 22:27:25,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:25,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 22:27:25,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:25,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 22:27:25,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:27:25,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 80 [2024-11-10 22:27:25,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 76 transitions, 242 flow. Second operand has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 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) [2024-11-10 22:27:25,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:25,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 80 [2024-11-10 22:27:25,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:26,142 INFO L124 PetriNetUnfolderBase]: 449/927 cut-off events. [2024-11-10 22:27:26,143 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-10 22:27:26,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 927 events. 449/927 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5152 event pairs, 306 based on Foata normal form. 0/862 useless extension candidates. Maximal degree in co-relation 1481. Up to 639 conditions per place. [2024-11-10 22:27:26,150 INFO L140 encePairwiseOnDemand]: 63/80 looper letters, 36 selfloop transitions, 49 changer transitions 0/112 dead transitions. [2024-11-10 22:27:26,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 112 transitions, 574 flow [2024-11-10 22:27:26,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:27:26,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:27:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 397 transitions. [2024-11-10 22:27:26,154 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49625 [2024-11-10 22:27:26,154 INFO L175 Difference]: Start difference. First operand has 68 places, 76 transitions, 242 flow. Second operand 10 states and 397 transitions. [2024-11-10 22:27:26,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 112 transitions, 574 flow [2024-11-10 22:27:26,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 112 transitions, 574 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:27:26,163 INFO L231 Difference]: Finished difference. Result has 80 places, 112 transitions, 568 flow [2024-11-10 22:27:26,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=568, PETRI_PLACES=80, PETRI_TRANSITIONS=112} [2024-11-10 22:27:26,164 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places. [2024-11-10 22:27:26,165 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 112 transitions, 568 flow [2024-11-10 22:27:26,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 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) [2024-11-10 22:27:26,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:26,165 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:26,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:27:26,366 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 [2024-11-10 22:27:26,366 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:26,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:26,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1326501612, now seen corresponding path program 1 times [2024-11-10 22:27:26,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:26,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054005600] [2024-11-10 22:27:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:26,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:26,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:26,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054005600] [2024-11-10 22:27:26,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054005600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:26,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:26,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:27:26,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096619638] [2024-11-10 22:27:26,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:26,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:26,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:26,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:26,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:26,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 80 [2024-11-10 22:27:26,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 112 transitions, 568 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:26,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:26,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 80 [2024-11-10 22:27:26,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:26,770 INFO L124 PetriNetUnfolderBase]: 883/1636 cut-off events. [2024-11-10 22:27:26,771 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2024-11-10 22:27:26,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3167 conditions, 1636 events. 883/1636 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9371 event pairs, 276 based on Foata normal form. 42/1572 useless extension candidates. Maximal degree in co-relation 3035. Up to 1001 conditions per place. [2024-11-10 22:27:26,781 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 108 selfloop transitions, 4 changer transitions 0/141 dead transitions. [2024-11-10 22:27:26,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 141 transitions, 856 flow [2024-11-10 22:27:26,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:26,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-11-10 22:27:26,783 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-10 22:27:26,783 INFO L175 Difference]: Start difference. First operand has 80 places, 112 transitions, 568 flow. Second operand 4 states and 210 transitions. [2024-11-10 22:27:26,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 141 transitions, 856 flow [2024-11-10 22:27:26,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 141 transitions, 730 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-10 22:27:26,794 INFO L231 Difference]: Finished difference. Result has 81 places, 115 transitions, 471 flow [2024-11-10 22:27:26,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=471, PETRI_PLACES=81, PETRI_TRANSITIONS=115} [2024-11-10 22:27:26,796 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 10 predicate places. [2024-11-10 22:27:26,796 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 115 transitions, 471 flow [2024-11-10 22:27:26,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:26,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:26,797 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:26,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:27:26,797 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:26,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:26,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1513922068, now seen corresponding path program 1 times [2024-11-10 22:27:26,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:26,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508128964] [2024-11-10 22:27:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:26,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:26,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:26,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508128964] [2024-11-10 22:27:26,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508128964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:26,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:26,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:27:26,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741047398] [2024-11-10 22:27:26,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:26,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:26,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:26,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:26,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:26,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 80 [2024-11-10 22:27:26,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 115 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:26,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:26,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 80 [2024-11-10 22:27:26,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:27,257 INFO L124 PetriNetUnfolderBase]: 1399/2550 cut-off events. [2024-11-10 22:27:27,257 INFO L125 PetriNetUnfolderBase]: For 1061/1220 co-relation queries the response was YES. [2024-11-10 22:27:27,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5563 conditions, 2550 events. 1399/2550 cut-off events. For 1061/1220 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15768 event pairs, 724 based on Foata normal form. 64/2440 useless extension candidates. Maximal degree in co-relation 5446. Up to 1517 conditions per place. [2024-11-10 22:27:27,276 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 115 selfloop transitions, 4 changer transitions 0/148 dead transitions. [2024-11-10 22:27:27,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 148 transitions, 819 flow [2024-11-10 22:27:27,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 208 transitions. [2024-11-10 22:27:27,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-10 22:27:27,281 INFO L175 Difference]: Start difference. First operand has 81 places, 115 transitions, 471 flow. Second operand 4 states and 208 transitions. [2024-11-10 22:27:27,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 148 transitions, 819 flow [2024-11-10 22:27:27,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 148 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:27,290 INFO L231 Difference]: Finished difference. Result has 85 places, 118 transitions, 497 flow [2024-11-10 22:27:27,290 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=497, PETRI_PLACES=85, PETRI_TRANSITIONS=118} [2024-11-10 22:27:27,291 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 14 predicate places. [2024-11-10 22:27:27,291 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 118 transitions, 497 flow [2024-11-10 22:27:27,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:27,291 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:27,291 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:27:27,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:27:27,292 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:27,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:27,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1575530035, now seen corresponding path program 2 times [2024-11-10 22:27:27,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:27,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063298985] [2024-11-10 22:27:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:27,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:27,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:27,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063298985] [2024-11-10 22:27:27,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063298985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:27,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274746337] [2024-11-10 22:27:27,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:27:27,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:27,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:27,482 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) [2024-11-10 22:27:27,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:27:27,548 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:27:27,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:27:27,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:27:27,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:27,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:27,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274746337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:27,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:27,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:27:27,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959113046] [2024-11-10 22:27:27,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:27,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:27:27,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:27,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:27:27,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:27:27,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 80 [2024-11-10 22:27:27,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 118 transitions, 497 flow. Second operand has 14 states, 14 states have (on average 27.142857142857142) internal successors, (380), 14 states have internal predecessors, (380), 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) [2024-11-10 22:27:27,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:27,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 80 [2024-11-10 22:27:27,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:28,347 INFO L124 PetriNetUnfolderBase]: 1079/2027 cut-off events. [2024-11-10 22:27:28,348 INFO L125 PetriNetUnfolderBase]: For 1452/1666 co-relation queries the response was YES. [2024-11-10 22:27:28,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4950 conditions, 2027 events. 1079/2027 cut-off events. For 1452/1666 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12527 event pairs, 724 based on Foata normal form. 5/1896 useless extension candidates. Maximal degree in co-relation 4770. Up to 1477 conditions per place. [2024-11-10 22:27:28,363 INFO L140 encePairwiseOnDemand]: 60/80 looper letters, 45 selfloop transitions, 81 changer transitions 0/149 dead transitions. [2024-11-10 22:27:28,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 149 transitions, 838 flow [2024-11-10 22:27:28,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:27:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:27:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 749 transitions. [2024-11-10 22:27:28,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39010416666666664 [2024-11-10 22:27:28,366 INFO L175 Difference]: Start difference. First operand has 85 places, 118 transitions, 497 flow. Second operand 24 states and 749 transitions. [2024-11-10 22:27:28,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 149 transitions, 838 flow [2024-11-10 22:27:28,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 149 transitions, 835 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:28,372 INFO L231 Difference]: Finished difference. Result has 109 places, 144 transitions, 785 flow [2024-11-10 22:27:28,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=785, PETRI_PLACES=109, PETRI_TRANSITIONS=144} [2024-11-10 22:27:28,373 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 38 predicate places. [2024-11-10 22:27:28,373 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 144 transitions, 785 flow [2024-11-10 22:27:28,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 27.142857142857142) internal successors, (380), 14 states have internal predecessors, (380), 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) [2024-11-10 22:27:28,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:28,374 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:28,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:27:28,577 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,SelfDestructingSolverStorable5 [2024-11-10 22:27:28,578 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:28,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:28,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1895900185, now seen corresponding path program 1 times [2024-11-10 22:27:28,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:28,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678157248] [2024-11-10 22:27:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:28,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:28,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:28,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678157248] [2024-11-10 22:27:28,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678157248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:28,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:28,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:27:28,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331909461] [2024-11-10 22:27:28,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:28,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:27:28,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:28,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:27:28,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:27:28,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 80 [2024-11-10 22:27:28,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 144 transitions, 785 flow. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 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) [2024-11-10 22:27:28,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:28,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 80 [2024-11-10 22:27:28,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:29,073 INFO L124 PetriNetUnfolderBase]: 1297/2201 cut-off events. [2024-11-10 22:27:29,074 INFO L125 PetriNetUnfolderBase]: For 1701/1965 co-relation queries the response was YES. [2024-11-10 22:27:29,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5577 conditions, 2201 events. 1297/2201 cut-off events. For 1701/1965 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12565 event pairs, 388 based on Foata normal form. 79/2143 useless extension candidates. Maximal degree in co-relation 5491. Up to 788 conditions per place. [2024-11-10 22:27:29,094 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 124 selfloop transitions, 10 changer transitions 0/177 dead transitions. [2024-11-10 22:27:29,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 177 transitions, 1187 flow [2024-11-10 22:27:29,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:27:29,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:27:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2024-11-10 22:27:29,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925 [2024-11-10 22:27:29,097 INFO L175 Difference]: Start difference. First operand has 109 places, 144 transitions, 785 flow. Second operand 5 states and 237 transitions. [2024-11-10 22:27:29,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 177 transitions, 1187 flow [2024-11-10 22:27:29,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 177 transitions, 1039 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-11-10 22:27:29,104 INFO L231 Difference]: Finished difference. Result has 103 places, 143 transitions, 655 flow [2024-11-10 22:27:29,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=655, PETRI_PLACES=103, PETRI_TRANSITIONS=143} [2024-11-10 22:27:29,106 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 32 predicate places. [2024-11-10 22:27:29,108 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 143 transitions, 655 flow [2024-11-10 22:27:29,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 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) [2024-11-10 22:27:29,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:29,108 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:29,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:27:29,109 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:29,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:29,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1406866746, now seen corresponding path program 1 times [2024-11-10 22:27:29,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:29,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661921063] [2024-11-10 22:27:29,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:29,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 22:27:29,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:29,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661921063] [2024-11-10 22:27:29,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661921063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:29,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:29,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:27:29,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938089045] [2024-11-10 22:27:29,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:29,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:27:29,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:29,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:27:29,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:27:29,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 80 [2024-11-10 22:27:29,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 143 transitions, 655 flow. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 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) [2024-11-10 22:27:29,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:29,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 80 [2024-11-10 22:27:29,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:29,702 INFO L124 PetriNetUnfolderBase]: 1559/2964 cut-off events. [2024-11-10 22:27:29,703 INFO L125 PetriNetUnfolderBase]: For 2536/2781 co-relation queries the response was YES. [2024-11-10 22:27:29,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7632 conditions, 2964 events. 1559/2964 cut-off events. For 2536/2781 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 17717 event pairs, 882 based on Foata normal form. 62/2982 useless extension candidates. Maximal degree in co-relation 7523. Up to 1525 conditions per place. [2024-11-10 22:27:29,726 INFO L140 encePairwiseOnDemand]: 64/80 looper letters, 185 selfloop transitions, 40 changer transitions 0/250 dead transitions. [2024-11-10 22:27:29,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 250 transitions, 1603 flow [2024-11-10 22:27:29,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:27:29,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:27:29,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 310 transitions. [2024-11-10 22:27:29,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-11-10 22:27:29,728 INFO L175 Difference]: Start difference. First operand has 103 places, 143 transitions, 655 flow. Second operand 6 states and 310 transitions. [2024-11-10 22:27:29,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 250 transitions, 1603 flow [2024-11-10 22:27:29,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 250 transitions, 1557 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:27:29,739 INFO L231 Difference]: Finished difference. Result has 107 places, 162 transitions, 854 flow [2024-11-10 22:27:29,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=854, PETRI_PLACES=107, PETRI_TRANSITIONS=162} [2024-11-10 22:27:29,741 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 36 predicate places. [2024-11-10 22:27:29,741 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 162 transitions, 854 flow [2024-11-10 22:27:29,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 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) [2024-11-10 22:27:29,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:29,742 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:29,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:27:29,742 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:29,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:29,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1356637069, now seen corresponding path program 1 times [2024-11-10 22:27:29,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:29,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130317839] [2024-11-10 22:27:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:29,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:29,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:29,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130317839] [2024-11-10 22:27:29,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130317839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:29,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:29,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:27:29,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788547804] [2024-11-10 22:27:29,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:29,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:27:29,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:29,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:27:29,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:27:29,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 80 [2024-11-10 22:27:29,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 162 transitions, 854 flow. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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) [2024-11-10 22:27:29,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:29,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 80 [2024-11-10 22:27:29,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:30,335 INFO L124 PetriNetUnfolderBase]: 1777/3108 cut-off events. [2024-11-10 22:27:30,335 INFO L125 PetriNetUnfolderBase]: For 3347/3676 co-relation queries the response was YES. [2024-11-10 22:27:30,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8279 conditions, 3108 events. 1777/3108 cut-off events. For 3347/3676 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 17525 event pairs, 1160 based on Foata normal form. 0/2974 useless extension candidates. Maximal degree in co-relation 8161. Up to 1822 conditions per place. [2024-11-10 22:27:30,357 INFO L140 encePairwiseOnDemand]: 64/80 looper letters, 176 selfloop transitions, 40 changer transitions 6/246 dead transitions. [2024-11-10 22:27:30,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 246 transitions, 1690 flow [2024-11-10 22:27:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:27:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:27:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 295 transitions. [2024-11-10 22:27:30,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-11-10 22:27:30,359 INFO L175 Difference]: Start difference. First operand has 107 places, 162 transitions, 854 flow. Second operand 6 states and 295 transitions. [2024-11-10 22:27:30,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 246 transitions, 1690 flow [2024-11-10 22:27:30,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 246 transitions, 1690 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:27:30,368 INFO L231 Difference]: Finished difference. Result has 114 places, 164 transitions, 962 flow [2024-11-10 22:27:30,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=962, PETRI_PLACES=114, PETRI_TRANSITIONS=164} [2024-11-10 22:27:30,369 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 43 predicate places. [2024-11-10 22:27:30,369 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 164 transitions, 962 flow [2024-11-10 22:27:30,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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) [2024-11-10 22:27:30,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:30,370 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:30,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:27:30,370 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:30,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1861642130, now seen corresponding path program 1 times [2024-11-10 22:27:30,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:30,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821040266] [2024-11-10 22:27:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:30,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 22:27:30,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:30,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821040266] [2024-11-10 22:27:30,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821040266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:30,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:30,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:27:30,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609571163] [2024-11-10 22:27:30,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:30,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:27:30,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:30,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:27:30,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:27:30,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 80 [2024-11-10 22:27:30,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 164 transitions, 962 flow. Second operand has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 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) [2024-11-10 22:27:30,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:30,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 80 [2024-11-10 22:27:30,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:30,931 INFO L124 PetriNetUnfolderBase]: 1281/2441 cut-off events. [2024-11-10 22:27:30,932 INFO L125 PetriNetUnfolderBase]: For 2922/3137 co-relation queries the response was YES. [2024-11-10 22:27:30,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6660 conditions, 2441 events. 1281/2441 cut-off events. For 2922/3137 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 14125 event pairs, 808 based on Foata normal form. 34/2436 useless extension candidates. Maximal degree in co-relation 6531. Up to 1525 conditions per place. [2024-11-10 22:27:30,952 INFO L140 encePairwiseOnDemand]: 64/80 looper letters, 139 selfloop transitions, 36 changer transitions 39/239 dead transitions. [2024-11-10 22:27:30,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 239 transitions, 1745 flow [2024-11-10 22:27:30,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:27:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:27:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 339 transitions. [2024-11-10 22:27:30,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6053571428571428 [2024-11-10 22:27:30,954 INFO L175 Difference]: Start difference. First operand has 114 places, 164 transitions, 962 flow. Second operand 7 states and 339 transitions. [2024-11-10 22:27:30,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 239 transitions, 1745 flow [2024-11-10 22:27:30,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 239 transitions, 1683 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:27:30,968 INFO L231 Difference]: Finished difference. Result has 120 places, 157 transitions, 950 flow [2024-11-10 22:27:30,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=950, PETRI_PLACES=120, PETRI_TRANSITIONS=157} [2024-11-10 22:27:30,970 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 49 predicate places. [2024-11-10 22:27:30,970 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 157 transitions, 950 flow [2024-11-10 22:27:30,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 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) [2024-11-10 22:27:30,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:30,971 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1] [2024-11-10 22:27:30,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:27:30,971 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:30,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2099392387, now seen corresponding path program 1 times [2024-11-10 22:27:30,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:30,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137542745] [2024-11-10 22:27:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:30,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:31,108 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 22:27:31,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:31,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137542745] [2024-11-10 22:27:31,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137542745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:31,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:31,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:27:31,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827630427] [2024-11-10 22:27:31,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:31,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:27:31,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:31,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:27:31,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:27:31,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 80 [2024-11-10 22:27:31,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 157 transitions, 950 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:31,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:31,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 80 [2024-11-10 22:27:31,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:31,460 INFO L124 PetriNetUnfolderBase]: 1077/2008 cut-off events. [2024-11-10 22:27:31,460 INFO L125 PetriNetUnfolderBase]: For 2465/2662 co-relation queries the response was YES. [2024-11-10 22:27:31,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5530 conditions, 2008 events. 1077/2008 cut-off events. For 2465/2662 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11731 event pairs, 724 based on Foata normal form. 3/1935 useless extension candidates. Maximal degree in co-relation 5432. Up to 1525 conditions per place. [2024-11-10 22:27:31,479 INFO L140 encePairwiseOnDemand]: 66/80 looper letters, 91 selfloop transitions, 20 changer transitions 10/146 dead transitions. [2024-11-10 22:27:31,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 146 transitions, 1035 flow [2024-11-10 22:27:31,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:27:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:27:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2024-11-10 22:27:31,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-10 22:27:31,482 INFO L175 Difference]: Start difference. First operand has 120 places, 157 transitions, 950 flow. Second operand 5 states and 228 transitions. [2024-11-10 22:27:31,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 146 transitions, 1035 flow [2024-11-10 22:27:31,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 146 transitions, 944 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-11-10 22:27:31,492 INFO L231 Difference]: Finished difference. Result has 108 places, 136 transitions, 694 flow [2024-11-10 22:27:31,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=694, PETRI_PLACES=108, PETRI_TRANSITIONS=136} [2024-11-10 22:27:31,493 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 37 predicate places. [2024-11-10 22:27:31,493 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 136 transitions, 694 flow [2024-11-10 22:27:31,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:31,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:31,494 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:31,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 22:27:31,494 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:31,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:31,495 INFO L85 PathProgramCache]: Analyzing trace with hash 706721723, now seen corresponding path program 1 times [2024-11-10 22:27:31,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:31,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531606338] [2024-11-10 22:27:31,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:31,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:31,724 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:31,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:31,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531606338] [2024-11-10 22:27:31,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531606338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:31,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595531962] [2024-11-10 22:27:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:31,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:31,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:31,732 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) [2024-11-10 22:27:31,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:27:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:31,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 22:27:31,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:31,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:32,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595531962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:32,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:32,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-10 22:27:32,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457444973] [2024-11-10 22:27:32,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:32,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 22:27:32,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:32,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 22:27:32,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-10 22:27:32,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 80 [2024-11-10 22:27:32,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 136 transitions, 694 flow. Second operand has 20 states, 20 states have (on average 27.3) internal successors, (546), 20 states have internal predecessors, (546), 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) [2024-11-10 22:27:32,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:32,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 80 [2024-11-10 22:27:32,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:33,133 INFO L124 PetriNetUnfolderBase]: 2129/3775 cut-off events. [2024-11-10 22:27:33,133 INFO L125 PetriNetUnfolderBase]: For 2583/3026 co-relation queries the response was YES. [2024-11-10 22:27:33,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9236 conditions, 3775 events. 2129/3775 cut-off events. For 2583/3026 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 22247 event pairs, 1448 based on Foata normal form. 3/3694 useless extension candidates. Maximal degree in co-relation 9147. Up to 1480 conditions per place. [2024-11-10 22:27:33,162 INFO L140 encePairwiseOnDemand]: 63/80 looper letters, 62 selfloop transitions, 91 changer transitions 0/175 dead transitions. [2024-11-10 22:27:33,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 175 transitions, 1175 flow [2024-11-10 22:27:33,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 22:27:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 22:27:33,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 411 transitions. [2024-11-10 22:27:33,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-11-10 22:27:33,165 INFO L175 Difference]: Start difference. First operand has 108 places, 136 transitions, 694 flow. Second operand 12 states and 411 transitions. [2024-11-10 22:27:33,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 175 transitions, 1175 flow [2024-11-10 22:27:33,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 175 transitions, 1088 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-10 22:27:33,176 INFO L231 Difference]: Finished difference. Result has 113 places, 149 transitions, 904 flow [2024-11-10 22:27:33,176 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=904, PETRI_PLACES=113, PETRI_TRANSITIONS=149} [2024-11-10 22:27:33,177 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 42 predicate places. [2024-11-10 22:27:33,177 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 149 transitions, 904 flow [2024-11-10 22:27:33,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 27.3) internal successors, (546), 20 states have internal predecessors, (546), 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) [2024-11-10 22:27:33,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:33,178 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-10 22:27:33,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:27:33,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:33,378 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:33,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:33,379 INFO L85 PathProgramCache]: Analyzing trace with hash 58707961, now seen corresponding path program 2 times [2024-11-10 22:27:33,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:33,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986944593] [2024-11-10 22:27:33,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:33,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 42 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:33,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:33,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986944593] [2024-11-10 22:27:33,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986944593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:33,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105596022] [2024-11-10 22:27:33,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:27:33,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:33,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:33,857 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) [2024-11-10 22:27:33,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:27:33,937 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:27:33,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:27:33,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:27:33,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-10 22:27:34,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-10 22:27:34,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105596022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:34,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:34,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 3, 3] total 21 [2024-11-10 22:27:34,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537981287] [2024-11-10 22:27:34,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:34,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 22:27:34,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:34,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 22:27:34,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-10 22:27:34,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 80 [2024-11-10 22:27:34,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 149 transitions, 904 flow. Second operand has 22 states, 22 states have (on average 27.272727272727273) internal successors, (600), 22 states have internal predecessors, (600), 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) [2024-11-10 22:27:34,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:34,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 80 [2024-11-10 22:27:34,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:35,628 INFO L124 PetriNetUnfolderBase]: 3186/5612 cut-off events. [2024-11-10 22:27:35,629 INFO L125 PetriNetUnfolderBase]: For 3954/4611 co-relation queries the response was YES. [2024-11-10 22:27:35,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13745 conditions, 5612 events. 3186/5612 cut-off events. For 3954/4611 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 33483 event pairs, 2172 based on Foata normal form. 6/5470 useless extension candidates. Maximal degree in co-relation 13647. Up to 2913 conditions per place. [2024-11-10 22:27:35,676 INFO L140 encePairwiseOnDemand]: 60/80 looper letters, 58 selfloop transitions, 111 changer transitions 0/191 dead transitions. [2024-11-10 22:27:35,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 191 transitions, 1434 flow [2024-11-10 22:27:35,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 22:27:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-10 22:27:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 676 transitions. [2024-11-10 22:27:35,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2024-11-10 22:27:35,679 INFO L175 Difference]: Start difference. First operand has 113 places, 149 transitions, 904 flow. Second operand 21 states and 676 transitions. [2024-11-10 22:27:35,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 191 transitions, 1434 flow [2024-11-10 22:27:35,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 191 transitions, 1344 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-10 22:27:35,690 INFO L231 Difference]: Finished difference. Result has 126 places, 165 transitions, 1156 flow [2024-11-10 22:27:35,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1156, PETRI_PLACES=126, PETRI_TRANSITIONS=165} [2024-11-10 22:27:35,691 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 55 predicate places. [2024-11-10 22:27:35,691 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 165 transitions, 1156 flow [2024-11-10 22:27:35,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 27.272727272727273) internal successors, (600), 22 states have internal predecessors, (600), 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) [2024-11-10 22:27:35,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:35,692 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:35,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:27:35,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:35,893 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:35,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:35,893 INFO L85 PathProgramCache]: Analyzing trace with hash 483859546, now seen corresponding path program 1 times [2024-11-10 22:27:35,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:35,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794319461] [2024-11-10 22:27:35,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:35,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:27:36,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:36,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794319461] [2024-11-10 22:27:36,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794319461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:36,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842771096] [2024-11-10 22:27:36,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:36,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:36,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:36,024 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) [2024-11-10 22:27:36,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:27:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:36,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:27:36,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:27:36,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:36,496 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:27:36,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842771096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:36,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:36,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-10 22:27:36,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860598884] [2024-11-10 22:27:36,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:36,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 22:27:36,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:36,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 22:27:36,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-10 22:27:36,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 80 [2024-11-10 22:27:36,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 165 transitions, 1156 flow. Second operand has 19 states, 19 states have (on average 25.842105263157894) internal successors, (491), 19 states have internal predecessors, (491), 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) [2024-11-10 22:27:36,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:36,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 80 [2024-11-10 22:27:36,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:38,108 INFO L124 PetriNetUnfolderBase]: 4516/7778 cut-off events. [2024-11-10 22:27:38,109 INFO L125 PetriNetUnfolderBase]: For 4676/5157 co-relation queries the response was YES. [2024-11-10 22:27:38,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18840 conditions, 7778 events. 4516/7778 cut-off events. For 4676/5157 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 47959 event pairs, 948 based on Foata normal form. 186/7756 useless extension candidates. Maximal degree in co-relation 18732. Up to 1161 conditions per place. [2024-11-10 22:27:38,158 INFO L140 encePairwiseOnDemand]: 57/80 looper letters, 215 selfloop transitions, 100 changer transitions 0/334 dead transitions. [2024-11-10 22:27:38,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 334 transitions, 2325 flow [2024-11-10 22:27:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 22:27:38,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 22:27:38,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 654 transitions. [2024-11-10 22:27:38,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43026315789473685 [2024-11-10 22:27:38,162 INFO L175 Difference]: Start difference. First operand has 126 places, 165 transitions, 1156 flow. Second operand 19 states and 654 transitions. [2024-11-10 22:27:38,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 334 transitions, 2325 flow [2024-11-10 22:27:38,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 334 transitions, 2119 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-11-10 22:27:38,181 INFO L231 Difference]: Finished difference. Result has 132 places, 171 transitions, 1172 flow [2024-11-10 22:27:38,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1172, PETRI_PLACES=132, PETRI_TRANSITIONS=171} [2024-11-10 22:27:38,183 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 61 predicate places. [2024-11-10 22:27:38,183 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 171 transitions, 1172 flow [2024-11-10 22:27:38,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 25.842105263157894) internal successors, (491), 19 states have internal predecessors, (491), 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) [2024-11-10 22:27:38,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:38,183 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:38,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 22:27:38,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-10 22:27:38,384 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:38,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:38,385 INFO L85 PathProgramCache]: Analyzing trace with hash -160390023, now seen corresponding path program 1 times [2024-11-10 22:27:38,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:38,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168793957] [2024-11-10 22:27:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:38,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:27:38,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:38,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168793957] [2024-11-10 22:27:38,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168793957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:38,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840593863] [2024-11-10 22:27:38,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:38,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:38,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:38,536 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) [2024-11-10 22:27:38,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:27:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:38,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:27:38,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:27:38,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:27:39,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840593863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:39,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:39,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 18 [2024-11-10 22:27:39,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190749767] [2024-11-10 22:27:39,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:39,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 22:27:39,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:39,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 22:27:39,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-10 22:27:39,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 80 [2024-11-10 22:27:39,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 171 transitions, 1172 flow. Second operand has 20 states, 20 states have (on average 26.15) internal successors, (523), 20 states have internal predecessors, (523), 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) [2024-11-10 22:27:39,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:39,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 80 [2024-11-10 22:27:39,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:40,644 INFO L124 PetriNetUnfolderBase]: 5150/8163 cut-off events. [2024-11-10 22:27:40,644 INFO L125 PetriNetUnfolderBase]: For 9978/10806 co-relation queries the response was YES. [2024-11-10 22:27:40,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22373 conditions, 8163 events. 5150/8163 cut-off events. For 9978/10806 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 47505 event pairs, 2098 based on Foata normal form. 0/7624 useless extension candidates. Maximal degree in co-relation 22269. Up to 3394 conditions per place. [2024-11-10 22:27:40,687 INFO L140 encePairwiseOnDemand]: 58/80 looper letters, 157 selfloop transitions, 67 changer transitions 12/258 dead transitions. [2024-11-10 22:27:40,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 258 transitions, 2020 flow [2024-11-10 22:27:40,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 22:27:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 22:27:40,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 486 transitions. [2024-11-10 22:27:40,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-11-10 22:27:40,689 INFO L175 Difference]: Start difference. First operand has 132 places, 171 transitions, 1172 flow. Second operand 15 states and 486 transitions. [2024-11-10 22:27:40,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 258 transitions, 2020 flow [2024-11-10 22:27:40,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 258 transitions, 1836 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-11-10 22:27:40,701 INFO L231 Difference]: Finished difference. Result has 135 places, 175 transitions, 1177 flow [2024-11-10 22:27:40,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1177, PETRI_PLACES=135, PETRI_TRANSITIONS=175} [2024-11-10 22:27:40,701 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 64 predicate places. [2024-11-10 22:27:40,702 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 175 transitions, 1177 flow [2024-11-10 22:27:40,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 26.15) internal successors, (523), 20 states have internal predecessors, (523), 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) [2024-11-10 22:27:40,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:40,702 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:40,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:27:40,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 22:27:40,903 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:40,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1644841726, now seen corresponding path program 1 times [2024-11-10 22:27:40,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:40,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504876125] [2024-11-10 22:27:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:40,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:41,015 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:27:41,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:41,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504876125] [2024-11-10 22:27:41,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504876125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:41,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349407324] [2024-11-10 22:27:41,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:41,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:41,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:41,018 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) [2024-11-10 22:27:41,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:27:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:41,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 22:27:41,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:27:41,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:27:41,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349407324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:41,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:41,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 21 [2024-11-10 22:27:41,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612253281] [2024-11-10 22:27:41,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:41,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 22:27:41,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:41,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 22:27:41,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-10 22:27:41,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 80 [2024-11-10 22:27:41,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 175 transitions, 1177 flow. Second operand has 21 states, 21 states have (on average 25.952380952380953) internal successors, (545), 21 states have internal predecessors, (545), 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) [2024-11-10 22:27:41,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:41,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 80 [2024-11-10 22:27:41,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:43,565 INFO L124 PetriNetUnfolderBase]: 5738/9461 cut-off events. [2024-11-10 22:27:43,565 INFO L125 PetriNetUnfolderBase]: For 8235/8542 co-relation queries the response was YES. [2024-11-10 22:27:43,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25245 conditions, 9461 events. 5738/9461 cut-off events. For 8235/8542 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 59539 event pairs, 765 based on Foata normal form. 242/9486 useless extension candidates. Maximal degree in co-relation 25141. Up to 1332 conditions per place. [2024-11-10 22:27:43,605 INFO L140 encePairwiseOnDemand]: 57/80 looper letters, 159 selfloop transitions, 75 changer transitions 109/361 dead transitions. [2024-11-10 22:27:43,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 361 transitions, 2571 flow [2024-11-10 22:27:43,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 22:27:43,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-10 22:27:43,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 714 transitions. [2024-11-10 22:27:43,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-10 22:27:43,607 INFO L175 Difference]: Start difference. First operand has 135 places, 175 transitions, 1177 flow. Second operand 21 states and 714 transitions. [2024-11-10 22:27:43,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 361 transitions, 2571 flow [2024-11-10 22:27:43,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 361 transitions, 2461 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-10 22:27:43,627 INFO L231 Difference]: Finished difference. Result has 145 places, 142 transitions, 1022 flow [2024-11-10 22:27:43,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1022, PETRI_PLACES=145, PETRI_TRANSITIONS=142} [2024-11-10 22:27:43,628 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 74 predicate places. [2024-11-10 22:27:43,628 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 1022 flow [2024-11-10 22:27:43,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 25.952380952380953) internal successors, (545), 21 states have internal predecessors, (545), 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) [2024-11-10 22:27:43,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:43,629 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:43,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 22:27:43,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:43,830 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:43,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:43,831 INFO L85 PathProgramCache]: Analyzing trace with hash -899220142, now seen corresponding path program 1 times [2024-11-10 22:27:43,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:43,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020425367] [2024-11-10 22:27:43,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:43,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:43,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:43,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020425367] [2024-11-10 22:27:43,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020425367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:43,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471932628] [2024-11-10 22:27:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:43,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:43,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:43,953 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) [2024-11-10 22:27:43,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:27:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:44,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:44,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:44,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:44,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471932628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:44,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:44,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:27:44,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049281351] [2024-11-10 22:27:44,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:44,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:27:44,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:44,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:27:44,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:27:44,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 80 [2024-11-10 22:27:44,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 142 transitions, 1022 flow. Second operand has 12 states, 12 states have (on average 38.25) internal successors, (459), 12 states have internal predecessors, (459), 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) [2024-11-10 22:27:44,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:44,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 80 [2024-11-10 22:27:44,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:45,429 INFO L124 PetriNetUnfolderBase]: 6973/12743 cut-off events. [2024-11-10 22:27:45,429 INFO L125 PetriNetUnfolderBase]: For 16150/16440 co-relation queries the response was YES. [2024-11-10 22:27:45,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35506 conditions, 12743 events. 6973/12743 cut-off events. For 16150/16440 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 94678 event pairs, 2210 based on Foata normal form. 516/13069 useless extension candidates. Maximal degree in co-relation 35402. Up to 4704 conditions per place. [2024-11-10 22:27:45,498 INFO L140 encePairwiseOnDemand]: 75/80 looper letters, 245 selfloop transitions, 13 changer transitions 0/295 dead transitions. [2024-11-10 22:27:45,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 295 transitions, 2228 flow [2024-11-10 22:27:45,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:27:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:27:45,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 512 transitions. [2024-11-10 22:27:45,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-10 22:27:45,500 INFO L175 Difference]: Start difference. First operand has 145 places, 142 transitions, 1022 flow. Second operand 10 states and 512 transitions. [2024-11-10 22:27:45,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 295 transitions, 2228 flow [2024-11-10 22:27:45,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 295 transitions, 1812 flow, removed 18 selfloop flow, removed 14 redundant places. [2024-11-10 22:27:45,667 INFO L231 Difference]: Finished difference. Result has 124 places, 151 transitions, 844 flow [2024-11-10 22:27:45,668 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=844, PETRI_PLACES=124, PETRI_TRANSITIONS=151} [2024-11-10 22:27:45,668 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 53 predicate places. [2024-11-10 22:27:45,668 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 151 transitions, 844 flow [2024-11-10 22:27:45,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 38.25) internal successors, (459), 12 states have internal predecessors, (459), 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) [2024-11-10 22:27:45,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:45,669 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:45,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 22:27:45,870 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,SelfDestructingSolverStorable16 [2024-11-10 22:27:45,871 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:45,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:45,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1062719820, now seen corresponding path program 1 times [2024-11-10 22:27:45,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:45,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140185554] [2024-11-10 22:27:45,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:45,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:46,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:46,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140185554] [2024-11-10 22:27:46,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140185554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:46,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047435243] [2024-11-10 22:27:46,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:46,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:46,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:46,029 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) [2024-11-10 22:27:46,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:27:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:46,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:46,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:46,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:46,247 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:27:46,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047435243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:46,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:46,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:27:46,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605167373] [2024-11-10 22:27:46,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:46,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:27:46,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:46,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:27:46,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:27:46,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 80 [2024-11-10 22:27:46,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 151 transitions, 844 flow. Second operand has 12 states, 12 states have (on average 38.416666666666664) internal successors, (461), 12 states have internal predecessors, (461), 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) [2024-11-10 22:27:46,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:46,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 80 [2024-11-10 22:27:46,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:48,895 INFO L124 PetriNetUnfolderBase]: 13985/24367 cut-off events. [2024-11-10 22:27:48,896 INFO L125 PetriNetUnfolderBase]: For 33996/34330 co-relation queries the response was YES. [2024-11-10 22:27:48,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65467 conditions, 24367 events. 13985/24367 cut-off events. For 33996/34330 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 187984 event pairs, 3274 based on Foata normal form. 996/25133 useless extension candidates. Maximal degree in co-relation 65380. Up to 8716 conditions per place. [2024-11-10 22:27:49,057 INFO L140 encePairwiseOnDemand]: 75/80 looper letters, 318 selfloop transitions, 13 changer transitions 0/368 dead transitions. [2024-11-10 22:27:49,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 368 transitions, 2614 flow [2024-11-10 22:27:49,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:27:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:27:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 504 transitions. [2024-11-10 22:27:49,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-10 22:27:49,059 INFO L175 Difference]: Start difference. First operand has 124 places, 151 transitions, 844 flow. Second operand 10 states and 504 transitions. [2024-11-10 22:27:49,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 368 transitions, 2614 flow [2024-11-10 22:27:49,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 368 transitions, 2515 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:49,103 INFO L231 Difference]: Finished difference. Result has 134 places, 160 transitions, 913 flow [2024-11-10 22:27:49,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=913, PETRI_PLACES=134, PETRI_TRANSITIONS=160} [2024-11-10 22:27:49,104 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 63 predicate places. [2024-11-10 22:27:49,105 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 160 transitions, 913 flow [2024-11-10 22:27:49,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 38.416666666666664) internal successors, (461), 12 states have internal predecessors, (461), 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) [2024-11-10 22:27:49,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:49,105 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:49,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 22:27:49,306 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,SelfDestructingSolverStorable17 [2024-11-10 22:27:49,306 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:49,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:49,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1892039292, now seen corresponding path program 2 times [2024-11-10 22:27:49,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:49,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537841227] [2024-11-10 22:27:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:49,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-10 22:27:49,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:49,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537841227] [2024-11-10 22:27:49,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537841227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:49,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020433235] [2024-11-10 22:27:49,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:27:49,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:49,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:49,577 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) [2024-11-10 22:27:49,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:27:49,693 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:27:49,694 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:27:49,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:27:49,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-10 22:27:49,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-10 22:27:49,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020433235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:49,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:49,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 9 [2024-11-10 22:27:49,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320468853] [2024-11-10 22:27:49,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:49,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 22:27:49,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:49,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 22:27:49,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-10 22:27:49,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 80 [2024-11-10 22:27:49,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 160 transitions, 913 flow. Second operand has 11 states, 11 states have (on average 28.363636363636363) internal successors, (312), 11 states have internal predecessors, (312), 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) [2024-11-10 22:27:49,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:49,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 80 [2024-11-10 22:27:49,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:52,478 INFO L124 PetriNetUnfolderBase]: 13063/21511 cut-off events. [2024-11-10 22:27:52,478 INFO L125 PetriNetUnfolderBase]: For 41566/41848 co-relation queries the response was YES. [2024-11-10 22:27:52,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64692 conditions, 21511 events. 13063/21511 cut-off events. For 41566/41848 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 153469 event pairs, 5590 based on Foata normal form. 316/21497 useless extension candidates. Maximal degree in co-relation 64596. Up to 5756 conditions per place. [2024-11-10 22:27:52,753 INFO L140 encePairwiseOnDemand]: 60/80 looper letters, 148 selfloop transitions, 70 changer transitions 20/258 dead transitions. [2024-11-10 22:27:52,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 258 transitions, 1884 flow [2024-11-10 22:27:52,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 22:27:52,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 22:27:52,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 514 transitions. [2024-11-10 22:27:52,755 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4015625 [2024-11-10 22:27:52,755 INFO L175 Difference]: Start difference. First operand has 134 places, 160 transitions, 913 flow. Second operand 16 states and 514 transitions. [2024-11-10 22:27:52,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 258 transitions, 1884 flow [2024-11-10 22:27:52,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 258 transitions, 1820 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-11-10 22:27:52,792 INFO L231 Difference]: Finished difference. Result has 142 places, 164 transitions, 1059 flow [2024-11-10 22:27:52,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1059, PETRI_PLACES=142, PETRI_TRANSITIONS=164} [2024-11-10 22:27:52,793 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 71 predicate places. [2024-11-10 22:27:52,793 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 164 transitions, 1059 flow [2024-11-10 22:27:52,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.363636363636363) internal successors, (312), 11 states have internal predecessors, (312), 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) [2024-11-10 22:27:52,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:52,794 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:52,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 22:27:52,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:52,999 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:27:52,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:52,999 INFO L85 PathProgramCache]: Analyzing trace with hash 859327334, now seen corresponding path program 2 times [2024-11-10 22:27:52,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:53,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17914310] [2024-11-10 22:27:53,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:53,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-10 22:27:53,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:53,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17914310] [2024-11-10 22:27:53,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17914310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:53,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814970046] [2024-11-10 22:27:53,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:27:53,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:53,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:53,225 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) [2024-11-10 22:27:53,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 22:27:53,343 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:27:53,343 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:27:53,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:27:53,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-10 22:27:53,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:53,511 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-10 22:27:53,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814970046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:53,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:53,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2024-11-10 22:27:53,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518341644] [2024-11-10 22:27:53,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:53,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:27:53,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:53,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:27:53,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:27:53,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 80 [2024-11-10 22:27:53,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 164 transitions, 1059 flow. Second operand has 12 states, 12 states have (on average 28.333333333333332) internal successors, (340), 12 states have internal predecessors, (340), 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) [2024-11-10 22:27:53,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:53,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 80 [2024-11-10 22:27:53,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:55,498 INFO L124 PetriNetUnfolderBase]: 10223/17581 cut-off events. [2024-11-10 22:27:55,498 INFO L125 PetriNetUnfolderBase]: For 36230/36230 co-relation queries the response was YES. [2024-11-10 22:27:55,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52889 conditions, 17581 events. 10223/17581 cut-off events. For 36230/36230 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 127207 event pairs, 4002 based on Foata normal form. 332/17772 useless extension candidates. Maximal degree in co-relation 52792. Up to 3864 conditions per place. [2024-11-10 22:27:55,559 INFO L140 encePairwiseOnDemand]: 60/80 looper letters, 0 selfloop transitions, 0 changer transitions 245/245 dead transitions. [2024-11-10 22:27:55,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 245 transitions, 1902 flow [2024-11-10 22:27:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 22:27:55,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 22:27:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 510 transitions. [2024-11-10 22:27:55,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-11-10 22:27:55,561 INFO L175 Difference]: Start difference. First operand has 142 places, 164 transitions, 1059 flow. Second operand 16 states and 510 transitions. [2024-11-10 22:27:55,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 245 transitions, 1902 flow [2024-11-10 22:27:55,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 245 transitions, 1796 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-11-10 22:27:55,603 INFO L231 Difference]: Finished difference. Result has 139 places, 0 transitions, 0 flow [2024-11-10 22:27:55,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=139, PETRI_TRANSITIONS=0} [2024-11-10 22:27:55,604 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 68 predicate places. [2024-11-10 22:27:55,604 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 0 transitions, 0 flow [2024-11-10 22:27:55,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.333333333333332) internal successors, (340), 12 states have internal predecessors, (340), 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) [2024-11-10 22:27:55,607 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2024-11-10 22:27:55,608 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2024-11-10 22:27:55,608 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2024-11-10 22:27:55,608 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2024-11-10 22:27:55,608 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2024-11-10 22:27:55,608 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2024-11-10 22:27:55,608 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2024-11-10 22:27:55,609 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2024-11-10 22:27:55,609 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2024-11-10 22:27:55,609 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2024-11-10 22:27:55,609 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2024-11-10 22:27:55,609 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2024-11-10 22:27:55,610 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2024-11-10 22:27:55,610 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2024-11-10 22:27:55,610 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2024-11-10 22:27:55,610 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2024-11-10 22:27:55,610 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2024-11-10 22:27:55,610 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2024-11-10 22:27:55,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2024-11-10 22:27:55,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2024-11-10 22:27:55,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2024-11-10 22:27:55,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2024-11-10 22:27:55,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2024-11-10 22:27:55,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 22:27:55,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:55,816 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:55,821 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 22:27:55,821 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 22:27:55,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:27:55 BasicIcfg [2024-11-10 22:27:55,826 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 22:27:55,826 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 22:27:55,826 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 22:27:55,827 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 22:27:55,827 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:23" (3/4) ... [2024-11-10 22:27:55,828 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 22:27:55,831 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-10 22:27:55,831 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-10 22:27:55,831 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-10 22:27:55,841 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 159 nodes and edges [2024-11-10 22:27:55,841 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 72 nodes and edges [2024-11-10 22:27:55,842 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2024-11-10 22:27:55,842 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-10 22:27:55,964 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 22:27:55,967 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 22:27:55,967 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 22:27:55,968 INFO L158 Benchmark]: Toolchain (without parser) took 33464.29ms. Allocated memory was 163.6MB in the beginning and 9.5GB in the end (delta: 9.4GB). Free memory was 97.3MB in the beginning and 8.5GB in the end (delta: -8.4GB). Peak memory consumption was 996.5MB. Max. memory is 16.1GB. [2024-11-10 22:27:55,968 INFO L158 Benchmark]: CDTParser took 1.28ms. Allocated memory is still 100.7MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:27:55,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.28ms. Allocated memory is still 163.6MB. Free memory was 97.0MB in the beginning and 135.0MB in the end (delta: -38.0MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2024-11-10 22:27:55,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.55ms. Allocated memory is still 163.6MB. Free memory was 135.0MB in the beginning and 132.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:27:55,969 INFO L158 Benchmark]: Boogie Preprocessor took 50.18ms. Allocated memory is still 163.6MB. Free memory was 132.8MB in the beginning and 130.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:27:55,969 INFO L158 Benchmark]: IcfgBuilder took 957.03ms. Allocated memory is still 163.6MB. Free memory was 130.2MB in the beginning and 65.2MB in the end (delta: 65.0MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2024-11-10 22:27:55,969 INFO L158 Benchmark]: TraceAbstraction took 31908.73ms. Allocated memory was 163.6MB in the beginning and 9.5GB in the end (delta: 9.4GB). Free memory was 64.4MB in the beginning and 8.5GB in the end (delta: -8.4GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-11-10 22:27:55,970 INFO L158 Benchmark]: Witness Printer took 140.84ms. Allocated memory is still 9.5GB. Free memory was 8.5GB in the beginning and 8.5GB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-10 22:27:55,971 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.28ms. Allocated memory is still 100.7MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.28ms. Allocated memory is still 163.6MB. Free memory was 97.0MB in the beginning and 135.0MB in the end (delta: -38.0MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.55ms. Allocated memory is still 163.6MB. Free memory was 135.0MB in the beginning and 132.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.18ms. Allocated memory is still 163.6MB. Free memory was 132.8MB in the beginning and 130.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 957.03ms. Allocated memory is still 163.6MB. Free memory was 130.2MB in the beginning and 65.2MB in the end (delta: 65.0MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. * TraceAbstraction took 31908.73ms. Allocated memory was 163.6MB in the beginning and 9.5GB in the end (delta: 9.4GB). Free memory was 64.4MB in the beginning and 8.5GB in the end (delta: -8.4GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 140.84ms. Allocated memory is still 9.5GB. Free memory was 8.5GB in the beginning and 8.5GB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: 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 7 procedures, 97 locations, 23 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: 31.8s, OverallIterations: 20, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 22.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3390 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3140 mSDsluCounter, 3338 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3174 mSDsCounter, 732 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10602 IncrementalHoareTripleChecker+Invalid, 11334 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 732 mSolverCounterUnsat, 164 mSDtfsCounter, 10602 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1139 GetRequests, 832 SyntacticMatches, 8 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1177occurred in iteration=15, InterpolantAutomatonStates: 219, 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, 0.6s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 1092 NumberOfCodeBlocks, 952 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1513 ConstructedInterpolants, 0 QuantifiedInterpolants, 4249 SizeOfPredicates, 55 NumberOfNonLiveVariables, 2100 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 42 InterpolantComputations, 9 PerfectInterpolantSequences, 1096/1326 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 22:27:56,003 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