./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc.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 55079ed406966de8cb8f01bd4828043af39842b101d9722a0d33cee3b1fc3a52 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:03:08,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:03:08,869 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:03:08,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:03:08,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:03:08,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:03:08,913 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:03:08,914 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:03:08,915 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:03:08,916 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:03:08,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:03:08,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:03:08,918 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:03:08,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:03:08,920 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:03:08,920 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:03:08,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:03:08,921 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:03:08,921 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:03:08,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:03:08,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:03:08,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:03:08,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:03:08,925 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:03:08,925 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:03:08,925 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:03:08,926 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:03:08,926 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:03:08,926 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:03:08,926 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:03:08,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:03:08,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:03:08,928 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:03:08,928 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:03:08,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:03:08,929 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:03:08,929 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:03:08,929 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:03:08,929 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:03:08,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:03:08,930 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:03:08,930 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:03:08,930 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:03:08,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:03:08,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55079ed406966de8cb8f01bd4828043af39842b101d9722a0d33cee3b1fc3a52 [2024-10-15 00:03:09,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:03:09,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:03:09,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:03:09,202 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:03:09,203 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:03:09,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2024-10-15 00:03:10,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:03:10,792 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:03:10,793 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2024-10-15 00:03:10,800 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2789ca30/ab187a7d84644f9b8450b915ae67fe5f/FLAGd4b544b9c [2024-10-15 00:03:11,189 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2789ca30/ab187a7d84644f9b8450b915ae67fe5f [2024-10-15 00:03:11,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:03:11,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:03:11,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:03:11,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:03:11,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:03:11,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a21888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11, skipping insertion in model container [2024-10-15 00:03:11,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,227 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:03:11,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:03:11,462 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:03:11,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:03:11,512 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:03:11,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11 WrapperNode [2024-10-15 00:03:11,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:03:11,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:03:11,514 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:03:11,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:03:11,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,554 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 125 [2024-10-15 00:03:11,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:03:11,556 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:03:11,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:03:11,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:03:11,566 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,569 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,588 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-15 00:03:11,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,598 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,604 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,607 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,608 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,611 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:03:11,612 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:03:11,612 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:03:11,612 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:03:11,613 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:03:11,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:11,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 00:03:11,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 00:03:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:03:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:03:11,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:03:11,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:03:11,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:03:11,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-15 00:03:11,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-15 00:03:11,708 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-15 00:03:11,708 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-15 00:03:11,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:03:11,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:03:11,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:03:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:03:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:03:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:03:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:03:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:03:11,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:03:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:03:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:03:11,714 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:03:11,854 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:03:11,857 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:03:12,226 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:03:12,228 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:03:12,526 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:03:12,526 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-15 00:03:12,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:12 BoogieIcfgContainer [2024-10-15 00:03:12,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:03:12,537 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:03:12,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:03:12,545 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:03:12,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:03:11" (1/3) ... [2024-10-15 00:03:12,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1861745a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:12, skipping insertion in model container [2024-10-15 00:03:12,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (2/3) ... [2024-10-15 00:03:12,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1861745a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:12, skipping insertion in model container [2024-10-15 00:03:12,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:12" (3/3) ... [2024-10-15 00:03:12,566 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2024-10-15 00:03:12,592 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:03:12,592 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-15 00:03:12,592 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:03:12,673 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-15 00:03:12,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 64 transitions, 156 flow [2024-10-15 00:03:12,746 INFO L124 PetriNetUnfolderBase]: 4/60 cut-off events. [2024-10-15 00:03:12,746 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-15 00:03:12,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 60 events. 4/60 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 172 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-10-15 00:03:12,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 64 transitions, 156 flow [2024-10-15 00:03:12,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 137 flow [2024-10-15 00:03:12,769 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:03:12,775 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;@795903ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:03:12,775 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-15 00:03:12,778 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:03:12,778 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:03:12,778 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:03:12,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:12,779 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:03:12,780 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:12,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:12,785 INFO L85 PathProgramCache]: Analyzing trace with hash 536972, now seen corresponding path program 1 times [2024-10-15 00:03:12,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:12,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397377086] [2024-10-15 00:03:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:12,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:13,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:13,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397377086] [2024-10-15 00:03:13,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397377086] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:13,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:13,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:03:13,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236868325] [2024-10-15 00:03:13,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:13,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:13,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:13,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:13,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:13,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-15 00:03:13,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:13,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:13,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-15 00:03:13,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:14,119 INFO L124 PetriNetUnfolderBase]: 4950/6791 cut-off events. [2024-10-15 00:03:14,120 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2024-10-15 00:03:14,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13618 conditions, 6791 events. 4950/6791 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 39157 event pairs, 3598 based on Foata normal form. 1/6019 useless extension candidates. Maximal degree in co-relation 12550. Up to 6384 conditions per place. [2024-10-15 00:03:14,200 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 32 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-10-15 00:03:14,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 59 transitions, 211 flow [2024-10-15 00:03:14,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:03:14,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:03:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-10-15 00:03:14,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-10-15 00:03:14,214 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 137 flow. Second operand 4 states and 148 transitions. [2024-10-15 00:03:14,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 59 transitions, 211 flow [2024-10-15 00:03:14,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 198 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-15 00:03:14,249 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 149 flow [2024-10-15 00:03:14,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-10-15 00:03:14,257 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -4 predicate places. [2024-10-15 00:03:14,258 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 149 flow [2024-10-15 00:03:14,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:14,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:14,259 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-15 00:03:14,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:03:14,259 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:14,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:14,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1182383984, now seen corresponding path program 1 times [2024-10-15 00:03:14,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:14,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435722938] [2024-10-15 00:03:14,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:14,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:14,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:14,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435722938] [2024-10-15 00:03:14,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435722938] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:14,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979377027] [2024-10-15 00:03:14,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:14,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:14,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:14,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:14,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:03:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:14,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:03:14,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:14,594 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:03:14,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979377027] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:14,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:03:14,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-15 00:03:14,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938819487] [2024-10-15 00:03:14,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:14,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:03:14,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:14,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:03:14,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:03:14,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-15 00:03:14,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:14,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:14,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-15 00:03:14,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:15,443 INFO L124 PetriNetUnfolderBase]: 4950/6790 cut-off events. [2024-10-15 00:03:15,444 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-15 00:03:15,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13471 conditions, 6790 events. 4950/6790 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 39112 event pairs, 3598 based on Foata normal form. 1/6019 useless extension candidates. Maximal degree in co-relation 13444. Up to 6379 conditions per place. [2024-10-15 00:03:15,495 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 28 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-10-15 00:03:15,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 215 flow [2024-10-15 00:03:15,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:03:15,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:03:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-10-15 00:03:15,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-10-15 00:03:15,498 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 149 flow. Second operand 6 states and 198 transitions. [2024-10-15 00:03:15,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 215 flow [2024-10-15 00:03:15,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:03:15,502 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 156 flow [2024-10-15 00:03:15,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-10-15 00:03:15,503 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-10-15 00:03:15,503 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 156 flow [2024-10-15 00:03:15,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:15,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:15,505 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:03:15,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 00:03:15,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:15,706 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:15,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:15,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2000802717, now seen corresponding path program 1 times [2024-10-15 00:03:15,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:15,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018078] [2024-10-15 00:03:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:15,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:15,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:15,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018078] [2024-10-15 00:03:15,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018078] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:15,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837823435] [2024-10-15 00:03:15,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:15,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:15,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:15,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:15,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:03:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:15,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:03:15,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:15,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:15,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:15,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:15,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837823435] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:15,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:15,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-15 00:03:15,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592672806] [2024-10-15 00:03:15,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:15,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:03:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:03:15,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:03:15,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-15 00:03:15,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 156 flow. Second operand has 12 states, 12 states have (on average 28.083333333333332) internal successors, (337), 12 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:15,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:15,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-15 00:03:15,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:16,658 INFO L124 PetriNetUnfolderBase]: 4953/6802 cut-off events. [2024-10-15 00:03:16,659 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-15 00:03:16,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13515 conditions, 6802 events. 4953/6802 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 39135 event pairs, 3598 based on Foata normal form. 3/6031 useless extension candidates. Maximal degree in co-relation 13445. Up to 6386 conditions per place. [2024-10-15 00:03:16,707 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 31 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-10-15 00:03:16,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 298 flow [2024-10-15 00:03:16,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:03:16,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:03:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2024-10-15 00:03:16,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4953125 [2024-10-15 00:03:16,710 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 156 flow. Second operand 10 states and 317 transitions. [2024-10-15 00:03:16,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 298 flow [2024-10-15 00:03:16,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 252 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-15 00:03:16,713 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 208 flow [2024-10-15 00:03:16,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=208, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-10-15 00:03:16,714 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2024-10-15 00:03:16,714 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 208 flow [2024-10-15 00:03:16,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.083333333333332) internal successors, (337), 12 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:16,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:16,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:16,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 00:03:16,915 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,SelfDestructingSolverStorable2 [2024-10-15 00:03:16,916 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:16,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash 235104787, now seen corresponding path program 1 times [2024-10-15 00:03:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:16,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651668229] [2024-10-15 00:03:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:16,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:17,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:17,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651668229] [2024-10-15 00:03:17,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651668229] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:17,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:17,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:03:17,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670472277] [2024-10-15 00:03:17,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:17,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:03:17,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:17,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:03:17,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:03:17,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-15 00:03:17,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:17,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:17,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-15 00:03:17,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:17,766 INFO L124 PetriNetUnfolderBase]: 4952/6801 cut-off events. [2024-10-15 00:03:17,766 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-15 00:03:17,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13512 conditions, 6801 events. 4952/6801 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 39144 event pairs, 3598 based on Foata normal form. 1/6031 useless extension candidates. Maximal degree in co-relation 13478. Up to 6390 conditions per place. [2024-10-15 00:03:17,895 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 40 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-10-15 00:03:17,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 66 transitions, 288 flow [2024-10-15 00:03:17,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:03:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:03:17,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-10-15 00:03:17,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2024-10-15 00:03:17,897 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 208 flow. Second operand 3 states and 121 transitions. [2024-10-15 00:03:17,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 66 transitions, 288 flow [2024-10-15 00:03:17,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 278 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:17,899 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 198 flow [2024-10-15 00:03:17,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-10-15 00:03:17,900 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2024-10-15 00:03:17,901 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 198 flow [2024-10-15 00:03:17,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:17,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:17,901 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:17,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 00:03:17,902 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:17,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:17,902 INFO L85 PathProgramCache]: Analyzing trace with hash 468397711, now seen corresponding path program 1 times [2024-10-15 00:03:17,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:17,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534325505] [2024-10-15 00:03:17,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:17,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:18,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:18,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534325505] [2024-10-15 00:03:18,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534325505] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:18,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205385005] [2024-10-15 00:03:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:18,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:18,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:18,222 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:18,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:03:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:18,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-15 00:03:18,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:18,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:03:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:18,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:18,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:03:18,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-15 00:03:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:18,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205385005] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:18,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:18,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-15 00:03:18,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983583028] [2024-10-15 00:03:18,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:18,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 00:03:18,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:18,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 00:03:18,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-15 00:03:18,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-15 00:03:18,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 198 flow. Second operand has 11 states, 11 states have (on average 31.181818181818183) internal successors, (343), 11 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:18,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:18,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-15 00:03:18,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:19,756 INFO L124 PetriNetUnfolderBase]: 7158/11821 cut-off events. [2024-10-15 00:03:19,756 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-10-15 00:03:19,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21384 conditions, 11821 events. 7158/11821 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 89689 event pairs, 2840 based on Foata normal form. 0/10520 useless extension candidates. Maximal degree in co-relation 21364. Up to 5414 conditions per place. [2024-10-15 00:03:19,827 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 65 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2024-10-15 00:03:19,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 101 transitions, 430 flow [2024-10-15 00:03:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 00:03:19,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-15 00:03:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 301 transitions. [2024-10-15 00:03:19,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.587890625 [2024-10-15 00:03:19,830 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 198 flow. Second operand 8 states and 301 transitions. [2024-10-15 00:03:19,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 101 transitions, 430 flow [2024-10-15 00:03:19,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:19,833 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 242 flow [2024-10-15 00:03:19,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=242, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-10-15 00:03:19,834 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-10-15 00:03:19,834 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 242 flow [2024-10-15 00:03:19,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.181818181818183) internal successors, (343), 11 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:19,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:19,835 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:19,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 00:03:20,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:20,036 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:20,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:20,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1634668787, now seen corresponding path program 1 times [2024-10-15 00:03:20,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:20,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256114287] [2024-10-15 00:03:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:20,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:20,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:20,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256114287] [2024-10-15 00:03:20,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256114287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:20,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:20,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:03:20,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898943093] [2024-10-15 00:03:20,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:20,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:03:20,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:20,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:03:20,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:03:20,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-15 00:03:20,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:20,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:20,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-15 00:03:20,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:20,874 INFO L124 PetriNetUnfolderBase]: 6071/10307 cut-off events. [2024-10-15 00:03:20,874 INFO L125 PetriNetUnfolderBase]: For 3725/3725 co-relation queries the response was YES. [2024-10-15 00:03:20,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21346 conditions, 10307 events. 6071/10307 cut-off events. For 3725/3725 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 76316 event pairs, 1230 based on Foata normal form. 0/9485 useless extension candidates. Maximal degree in co-relation 21314. Up to 6718 conditions per place. [2024-10-15 00:03:20,934 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 63 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-10-15 00:03:20,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 89 transitions, 440 flow [2024-10-15 00:03:20,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:03:20,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:03:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-10-15 00:03:20,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-10-15 00:03:20,936 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 242 flow. Second operand 3 states and 136 transitions. [2024-10-15 00:03:20,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 89 transitions, 440 flow [2024-10-15 00:03:20,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 430 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-15 00:03:20,941 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 240 flow [2024-10-15 00:03:20,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2024-10-15 00:03:20,942 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2024-10-15 00:03:20,942 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 240 flow [2024-10-15 00:03:20,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:20,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:20,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:20,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-15 00:03:20,943 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:20,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:20,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2047895002, now seen corresponding path program 1 times [2024-10-15 00:03:20,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:20,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554311794] [2024-10-15 00:03:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:20,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:20,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:20,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554311794] [2024-10-15 00:03:20,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554311794] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:20,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:20,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:03:20,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740309161] [2024-10-15 00:03:20,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:20,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:20,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:20,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:20,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:21,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 64 [2024-10-15 00:03:21,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:21,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:21,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 64 [2024-10-15 00:03:21,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:22,583 INFO L124 PetriNetUnfolderBase]: 14148/19671 cut-off events. [2024-10-15 00:03:22,584 INFO L125 PetriNetUnfolderBase]: For 10034/10034 co-relation queries the response was YES. [2024-10-15 00:03:22,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47280 conditions, 19671 events. 14148/19671 cut-off events. For 10034/10034 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 123377 event pairs, 7793 based on Foata normal form. 348/19358 useless extension candidates. Maximal degree in co-relation 47249. Up to 13466 conditions per place. [2024-10-15 00:03:22,712 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 93 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2024-10-15 00:03:22,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 117 transitions, 596 flow [2024-10-15 00:03:22,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:03:22,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:03:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-10-15 00:03:22,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69921875 [2024-10-15 00:03:22,716 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 240 flow. Second operand 4 states and 179 transitions. [2024-10-15 00:03:22,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 117 transitions, 596 flow [2024-10-15 00:03:22,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:22,734 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 265 flow [2024-10-15 00:03:22,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-10-15 00:03:22,735 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2024-10-15 00:03:22,735 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 265 flow [2024-10-15 00:03:22,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:22,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:22,735 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:22,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-15 00:03:22,735 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:22,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:22,736 INFO L85 PathProgramCache]: Analyzing trace with hash -841345646, now seen corresponding path program 1 times [2024-10-15 00:03:22,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:22,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362137755] [2024-10-15 00:03:22,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:22,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:22,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:22,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362137755] [2024-10-15 00:03:22,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362137755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:22,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:22,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:03:22,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83086383] [2024-10-15 00:03:22,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:22,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:22,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:22,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:22,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:22,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-15 00:03:22,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:22,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:22,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-15 00:03:22,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:24,193 INFO L124 PetriNetUnfolderBase]: 12435/17088 cut-off events. [2024-10-15 00:03:24,194 INFO L125 PetriNetUnfolderBase]: For 7011/9154 co-relation queries the response was YES. [2024-10-15 00:03:24,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41895 conditions, 17088 events. 12435/17088 cut-off events. For 7011/9154 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 106679 event pairs, 6391 based on Foata normal form. 1694/18651 useless extension candidates. Maximal degree in co-relation 41863. Up to 11738 conditions per place. [2024-10-15 00:03:24,299 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 83 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-10-15 00:03:24,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 547 flow [2024-10-15 00:03:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:03:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:03:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2024-10-15 00:03:24,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-15 00:03:24,301 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 265 flow. Second operand 4 states and 176 transitions. [2024-10-15 00:03:24,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 547 flow [2024-10-15 00:03:24,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 109 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:03:24,314 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 283 flow [2024-10-15 00:03:24,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-10-15 00:03:24,315 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2024-10-15 00:03:24,315 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 283 flow [2024-10-15 00:03:24,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:24,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:24,315 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-15 00:03:24,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-15 00:03:24,316 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:24,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:24,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1363844897, now seen corresponding path program 2 times [2024-10-15 00:03:24,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:24,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133748904] [2024-10-15 00:03:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:24,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:24,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:24,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133748904] [2024-10-15 00:03:24,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133748904] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:24,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602727817] [2024-10-15 00:03:24,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:03:24,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:24,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:24,454 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:24,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:03:24,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:03:24,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:03:24,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:03:24,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:03:24,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:03:24,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602727817] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:24,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:24,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-15 00:03:24,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500611381] [2024-10-15 00:03:24,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:24,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 00:03:24,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:24,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:03:24,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:03:24,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-15 00:03:24,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 283 flow. Second operand has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:24,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:24,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-15 00:03:24,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:25,963 INFO L124 PetriNetUnfolderBase]: 8080/10861 cut-off events. [2024-10-15 00:03:25,964 INFO L125 PetriNetUnfolderBase]: For 10553/11928 co-relation queries the response was YES. [2024-10-15 00:03:25,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29278 conditions, 10861 events. 8080/10861 cut-off events. For 10553/11928 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 62416 event pairs, 5845 based on Foata normal form. 690/11264 useless extension candidates. Maximal degree in co-relation 29236. Up to 10328 conditions per place. [2024-10-15 00:03:26,018 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 32 selfloop transitions, 18 changer transitions 0/75 dead transitions. [2024-10-15 00:03:26,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 75 transitions, 391 flow [2024-10-15 00:03:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:03:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:03:26,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 425 transitions. [2024-10-15 00:03:26,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47433035714285715 [2024-10-15 00:03:26,020 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 283 flow. Second operand 14 states and 425 transitions. [2024-10-15 00:03:26,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 75 transitions, 391 flow [2024-10-15 00:03:26,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 75 transitions, 373 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-15 00:03:26,037 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 309 flow [2024-10-15 00:03:26,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=309, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-10-15 00:03:26,038 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 25 predicate places. [2024-10-15 00:03:26,038 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 309 flow [2024-10-15 00:03:26,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:26,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:26,039 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:26,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 00:03:26,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:26,239 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:26,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:26,240 INFO L85 PathProgramCache]: Analyzing trace with hash -953832204, now seen corresponding path program 1 times [2024-10-15 00:03:26,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:26,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246157810] [2024-10-15 00:03:26,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:26,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:26,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:26,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246157810] [2024-10-15 00:03:26,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246157810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:26,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:26,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:03:26,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184456347] [2024-10-15 00:03:26,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:26,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:03:26,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:26,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:03:26,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:03:26,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-15 00:03:26,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:26,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:26,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-15 00:03:26,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:27,085 INFO L124 PetriNetUnfolderBase]: 7639/12413 cut-off events. [2024-10-15 00:03:27,085 INFO L125 PetriNetUnfolderBase]: For 7743/9122 co-relation queries the response was YES. [2024-10-15 00:03:27,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29293 conditions, 12413 events. 7639/12413 cut-off events. For 7743/9122 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 90767 event pairs, 1874 based on Foata normal form. 781/12621 useless extension candidates. Maximal degree in co-relation 29195. Up to 7014 conditions per place. [2024-10-15 00:03:27,151 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 71 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2024-10-15 00:03:27,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 97 transitions, 538 flow [2024-10-15 00:03:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:03:27,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:03:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-10-15 00:03:27,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-10-15 00:03:27,153 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 309 flow. Second operand 3 states and 134 transitions. [2024-10-15 00:03:27,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 97 transitions, 538 flow [2024-10-15 00:03:27,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 97 transitions, 470 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-15 00:03:27,160 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 249 flow [2024-10-15 00:03:27,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2024-10-15 00:03:27,161 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 16 predicate places. [2024-10-15 00:03:27,162 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 249 flow [2024-10-15 00:03:27,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:27,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:27,162 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:27,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-15 00:03:27,162 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:27,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:27,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1051645510, now seen corresponding path program 1 times [2024-10-15 00:03:27,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:27,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600092046] [2024-10-15 00:03:27,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:27,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:27,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:27,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600092046] [2024-10-15 00:03:27,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600092046] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:27,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:27,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:03:27,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573081517] [2024-10-15 00:03:27,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:27,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:27,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:27,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:27,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:27,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 64 [2024-10-15 00:03:27,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:27,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:27,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 64 [2024-10-15 00:03:27,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:28,832 INFO L124 PetriNetUnfolderBase]: 17585/24476 cut-off events. [2024-10-15 00:03:28,833 INFO L125 PetriNetUnfolderBase]: For 19105/22212 co-relation queries the response was YES. [2024-10-15 00:03:28,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63330 conditions, 24476 events. 17585/24476 cut-off events. For 19105/22212 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 155755 event pairs, 9783 based on Foata normal form. 2014/25767 useless extension candidates. Maximal degree in co-relation 39489. Up to 16489 conditions per place. [2024-10-15 00:03:29,031 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 100 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-10-15 00:03:29,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 125 transitions, 643 flow [2024-10-15 00:03:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:03:29,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:03:29,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-10-15 00:03:29,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69140625 [2024-10-15 00:03:29,033 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 249 flow. Second operand 4 states and 177 transitions. [2024-10-15 00:03:29,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 125 transitions, 643 flow [2024-10-15 00:03:29,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 125 transitions, 631 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-15 00:03:29,055 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 270 flow [2024-10-15 00:03:29,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2024-10-15 00:03:29,055 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2024-10-15 00:03:29,056 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 270 flow [2024-10-15 00:03:29,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:29,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:29,056 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:29,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-15 00:03:29,056 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:29,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:29,057 INFO L85 PathProgramCache]: Analyzing trace with hash 495972642, now seen corresponding path program 1 times [2024-10-15 00:03:29,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:29,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301287147] [2024-10-15 00:03:29,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:29,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:29,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:29,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301287147] [2024-10-15 00:03:29,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301287147] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:29,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:29,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:03:29,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112178860] [2024-10-15 00:03:29,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:29,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:03:29,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:29,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:03:29,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:03:29,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-15 00:03:29,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:29,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:29,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-15 00:03:29,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:30,488 INFO L124 PetriNetUnfolderBase]: 10593/16958 cut-off events. [2024-10-15 00:03:30,488 INFO L125 PetriNetUnfolderBase]: For 11689/13765 co-relation queries the response was YES. [2024-10-15 00:03:30,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44271 conditions, 16958 events. 10593/16958 cut-off events. For 11689/13765 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 124877 event pairs, 1914 based on Foata normal form. 1216/17935 useless extension candidates. Maximal degree in co-relation 28847. Up to 10867 conditions per place. [2024-10-15 00:03:30,647 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 74 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-10-15 00:03:30,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 101 transitions, 509 flow [2024-10-15 00:03:30,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:03:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:03:30,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-10-15 00:03:30,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-10-15 00:03:30,649 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 270 flow. Second operand 3 states and 135 transitions. [2024-10-15 00:03:30,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 101 transitions, 509 flow [2024-10-15 00:03:30,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:03:30,713 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 275 flow [2024-10-15 00:03:30,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-10-15 00:03:30,714 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 20 predicate places. [2024-10-15 00:03:30,714 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 275 flow [2024-10-15 00:03:30,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:30,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:30,715 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:30,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-15 00:03:30,715 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:30,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:30,715 INFO L85 PathProgramCache]: Analyzing trace with hash 901598957, now seen corresponding path program 1 times [2024-10-15 00:03:30,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:30,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100235301] [2024-10-15 00:03:30,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:30,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:30,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:30,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100235301] [2024-10-15 00:03:30,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100235301] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:30,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717351017] [2024-10-15 00:03:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:30,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:30,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:30,870 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) [2024-10-15 00:03:30,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:03:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:30,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:03:30,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:31,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:31,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717351017] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:31,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:31,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-15 00:03:31,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217636370] [2024-10-15 00:03:31,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:31,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 00:03:31,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:31,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 00:03:31,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-15 00:03:31,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-10-15 00:03:31,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 275 flow. Second operand has 20 states, 20 states have (on average 24.75) internal successors, (495), 20 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:31,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:31,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-10-15 00:03:31,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:34,475 INFO L124 PetriNetUnfolderBase]: 26041/35719 cut-off events. [2024-10-15 00:03:34,475 INFO L125 PetriNetUnfolderBase]: For 25775/34549 co-relation queries the response was YES. [2024-10-15 00:03:34,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94838 conditions, 35719 events. 26041/35719 cut-off events. For 25775/34549 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 236250 event pairs, 15435 based on Foata normal form. 4931/40311 useless extension candidates. Maximal degree in co-relation 58233. Up to 21839 conditions per place. [2024-10-15 00:03:34,833 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 132 selfloop transitions, 18 changer transitions 0/171 dead transitions. [2024-10-15 00:03:34,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 171 transitions, 884 flow [2024-10-15 00:03:34,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:03:34,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:03:34,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 348 transitions. [2024-10-15 00:03:34,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54375 [2024-10-15 00:03:34,836 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 275 flow. Second operand 10 states and 348 transitions. [2024-10-15 00:03:34,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 171 transitions, 884 flow [2024-10-15 00:03:34,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 171 transitions, 880 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:34,921 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 361 flow [2024-10-15 00:03:34,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=361, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-10-15 00:03:34,922 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 31 predicate places. [2024-10-15 00:03:34,922 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 361 flow [2024-10-15 00:03:34,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 24.75) internal successors, (495), 20 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:34,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:34,923 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:34,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-15 00:03:35,123 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,SelfDestructingSolverStorable12 [2024-10-15 00:03:35,124 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:35,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:35,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1047540111, now seen corresponding path program 1 times [2024-10-15 00:03:35,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:35,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180575313] [2024-10-15 00:03:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:35,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:35,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:35,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:35,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180575313] [2024-10-15 00:03:35,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180575313] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:35,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916335987] [2024-10-15 00:03:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:35,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:35,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:35,206 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) [2024-10-15 00:03:35,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 00:03:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:35,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:03:35,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:35,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:35,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916335987] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:35,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:35,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-15 00:03:35,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204502303] [2024-10-15 00:03:35,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:35,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 00:03:35,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:35,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 00:03:35,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-15 00:03:35,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2024-10-15 00:03:35,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 361 flow. Second operand has 19 states, 19 states have (on average 24.105263157894736) internal successors, (458), 19 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:35,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:35,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2024-10-15 00:03:35,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:39,703 INFO L124 PetriNetUnfolderBase]: 27908/38334 cut-off events. [2024-10-15 00:03:39,703 INFO L125 PetriNetUnfolderBase]: For 57609/64261 co-relation queries the response was YES. [2024-10-15 00:03:39,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113920 conditions, 38334 events. 27908/38334 cut-off events. For 57609/64261 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 252499 event pairs, 6952 based on Foata normal form. 3910/41574 useless extension candidates. Maximal degree in co-relation 78292. Up to 6812 conditions per place. [2024-10-15 00:03:40,062 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 233 selfloop transitions, 25 changer transitions 0/279 dead transitions. [2024-10-15 00:03:40,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 279 transitions, 1691 flow [2024-10-15 00:03:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:03:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:03:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 516 transitions. [2024-10-15 00:03:40,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5758928571428571 [2024-10-15 00:03:40,064 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 361 flow. Second operand 14 states and 516 transitions. [2024-10-15 00:03:40,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 279 transitions, 1691 flow [2024-10-15 00:03:40,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 279 transitions, 1658 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-15 00:03:40,245 INFO L231 Difference]: Finished difference. Result has 106 places, 87 transitions, 406 flow [2024-10-15 00:03:40,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=406, PETRI_PLACES=106, PETRI_TRANSITIONS=87} [2024-10-15 00:03:40,246 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 39 predicate places. [2024-10-15 00:03:40,246 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 87 transitions, 406 flow [2024-10-15 00:03:40,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.105263157894736) internal successors, (458), 19 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:40,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:40,247 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] [2024-10-15 00:03:40,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 00:03:40,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:40,448 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:40,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:40,448 INFO L85 PathProgramCache]: Analyzing trace with hash -634419607, now seen corresponding path program 1 times [2024-10-15 00:03:40,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:40,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382611190] [2024-10-15 00:03:40,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:40,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:40,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:40,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382611190] [2024-10-15 00:03:40,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382611190] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:40,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002913537] [2024-10-15 00:03:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:40,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:40,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:40,671 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) [2024-10-15 00:03:40,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 00:03:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:40,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-15 00:03:40,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:40,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:03:40,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-15 00:03:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:40,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:40,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:03:40,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-15 00:03:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:40,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002913537] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:40,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:40,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-15 00:03:40,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482954710] [2024-10-15 00:03:40,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:40,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 00:03:40,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:40,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 00:03:40,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-15 00:03:40,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-15 00:03:40,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 87 transitions, 406 flow. Second operand has 10 states, 10 states have (on average 31.9) internal successors, (319), 10 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:40,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:40,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-15 00:03:40,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:42,396 INFO L124 PetriNetUnfolderBase]: 13482/19771 cut-off events. [2024-10-15 00:03:42,396 INFO L125 PetriNetUnfolderBase]: For 32694/35902 co-relation queries the response was YES. [2024-10-15 00:03:42,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58896 conditions, 19771 events. 13482/19771 cut-off events. For 32694/35902 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 138411 event pairs, 10511 based on Foata normal form. 2184/21465 useless extension candidates. Maximal degree in co-relation 36071. Up to 17611 conditions per place. [2024-10-15 00:03:42,594 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 49 selfloop transitions, 8 changer transitions 1/86 dead transitions. [2024-10-15 00:03:42,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 86 transitions, 516 flow [2024-10-15 00:03:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:03:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:03:42,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-10-15 00:03:42,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-10-15 00:03:42,596 INFO L175 Difference]: Start difference. First operand has 106 places, 87 transitions, 406 flow. Second operand 6 states and 207 transitions. [2024-10-15 00:03:42,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 86 transitions, 516 flow [2024-10-15 00:03:42,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 86 transitions, 475 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-10-15 00:03:42,668 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 372 flow [2024-10-15 00:03:42,668 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2024-10-15 00:03:42,668 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2024-10-15 00:03:42,669 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 372 flow [2024-10-15 00:03:42,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.9) internal successors, (319), 10 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:42,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:42,669 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:42,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-15 00:03:42,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:42,870 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:42,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:42,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1564027031, now seen corresponding path program 2 times [2024-10-15 00:03:42,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:42,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61811912] [2024-10-15 00:03:42,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:42,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:43,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:43,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61811912] [2024-10-15 00:03:43,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61811912] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:43,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962549919] [2024-10-15 00:03:43,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:03:43,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:43,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:43,263 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) [2024-10-15 00:03:43,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 00:03:43,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 00:03:43,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:03:43,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-15 00:03:43,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:43,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:03:43,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-15 00:03:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:43,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:43,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:03:43,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-15 00:03:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:43,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962549919] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:43,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:43,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-15 00:03:43,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799324736] [2024-10-15 00:03:43,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:43,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 00:03:43,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:43,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 00:03:43,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-10-15 00:03:43,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2024-10-15 00:03:43,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 372 flow. Second operand has 19 states, 19 states have (on average 25.789473684210527) internal successors, (490), 19 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:43,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:43,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2024-10-15 00:03:43,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:46,596 INFO L124 PetriNetUnfolderBase]: 25662/36082 cut-off events. [2024-10-15 00:03:46,596 INFO L125 PetriNetUnfolderBase]: For 36433/42493 co-relation queries the response was YES. [2024-10-15 00:03:46,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101144 conditions, 36082 events. 25662/36082 cut-off events. For 36433/42493 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 245934 event pairs, 6655 based on Foata normal form. 2863/38784 useless extension candidates. Maximal degree in co-relation 78360. Up to 7980 conditions per place. [2024-10-15 00:03:46,970 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 175 selfloop transitions, 21 changer transitions 6/225 dead transitions. [2024-10-15 00:03:46,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 225 transitions, 1225 flow [2024-10-15 00:03:46,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:03:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:03:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 499 transitions. [2024-10-15 00:03:46,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5569196428571429 [2024-10-15 00:03:46,972 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 372 flow. Second operand 14 states and 499 transitions. [2024-10-15 00:03:46,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 225 transitions, 1225 flow [2024-10-15 00:03:47,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 225 transitions, 1214 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-15 00:03:47,134 INFO L231 Difference]: Finished difference. Result has 111 places, 89 transitions, 442 flow [2024-10-15 00:03:47,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=442, PETRI_PLACES=111, PETRI_TRANSITIONS=89} [2024-10-15 00:03:47,135 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 44 predicate places. [2024-10-15 00:03:47,135 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 89 transitions, 442 flow [2024-10-15 00:03:47,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 25.789473684210527) internal successors, (490), 19 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:47,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:47,136 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:47,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-15 00:03:47,336 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,SelfDestructingSolverStorable15 [2024-10-15 00:03:47,337 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-15 00:03:47,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:47,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2075008593, now seen corresponding path program 1 times [2024-10-15 00:03:47,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:47,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041274614] [2024-10-15 00:03:47,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:47,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:47,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:47,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:47,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041274614] [2024-10-15 00:03:47,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041274614] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:47,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897525595] [2024-10-15 00:03:47,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:47,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:47,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:47,413 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) [2024-10-15 00:03:47,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 00:03:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:47,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:03:47,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:47,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:47,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:47,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897525595] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:47,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:47,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-15 00:03:47,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831196795] [2024-10-15 00:03:47,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:47,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 00:03:47,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:47,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 00:03:47,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-15 00:03:47,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2024-10-15 00:03:47,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 89 transitions, 442 flow. Second operand has 19 states, 19 states have (on average 24.31578947368421) internal successors, (462), 19 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:47,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:47,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2024-10-15 00:03:47,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand