./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-send-receive.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d 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-send-receive.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 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:52:04,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:52:04,355 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:52:04,361 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:52:04,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:52:04,404 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:52:04,405 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:52:04,406 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:52:04,406 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:52:04,408 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:52:04,408 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:52:04,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:52:04,409 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:52:04,410 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:52:04,411 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:52:04,412 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:52:04,412 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:52:04,413 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:52:04,413 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:52:04,413 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:52:04,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:52:04,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:52:04,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:52:04,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:52:04,418 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:52:04,418 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:52:04,419 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:52:04,419 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:52:04,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:52:04,419 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:52:04,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:52:04,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:52:04,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:52:04,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:52:04,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:52:04,421 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:52:04,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:52:04,422 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:52:04,422 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:52:04,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:52:04,422 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:52:04,424 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:52:04,424 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:52:04,425 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:52:04,425 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 [2024-10-13 16:52:04,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:52:04,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:52:04,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:52:04,711 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:52:04,711 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:52:04,712 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2024-10-13 16:52:06,155 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:52:06,365 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:52:06,366 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2024-10-13 16:52:06,373 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f56fcf4bf/742373c1ccce47d795032fc81e6d913b/FLAGa427d8240 [2024-10-13 16:52:06,387 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f56fcf4bf/742373c1ccce47d795032fc81e6d913b [2024-10-13 16:52:06,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:52:06,392 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:52:06,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:52:06,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:52:06,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:52:06,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:52:06" (1/1) ... [2024-10-13 16:52:06,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577b81c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06, skipping insertion in model container [2024-10-13 16:52:06,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:52:06" (1/1) ... [2024-10-13 16:52:06,429 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:52:06,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:52:06,657 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:52:06,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:52:06,696 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:52:06,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06 WrapperNode [2024-10-13 16:52:06,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:52:06,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:52:06,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:52:06,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:52:06,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06" (1/1) ... [2024-10-13 16:52:06,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06" (1/1) ... [2024-10-13 16:52:06,736 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 160 [2024-10-13 16:52:06,737 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:52:06,738 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:52:06,738 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:52:06,738 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:52:06,748 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06" (1/1) ... [2024-10-13 16:52:06,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06" (1/1) ... [2024-10-13 16:52:06,752 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06" (1/1) ... [2024-10-13 16:52:06,768 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-13 16:52:06,768 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06" (1/1) ... [2024-10-13 16:52:06,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06" (1/1) ... [2024-10-13 16:52:06,779 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06" (1/1) ... [2024-10-13 16:52:06,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06" (1/1) ... [2024-10-13 16:52:06,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06" (1/1) ... [2024-10-13 16:52:06,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06" (1/1) ... [2024-10-13 16:52:06,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:52:06,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:52:06,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:52:06,795 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:52:06,796 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06" (1/1) ... [2024-10-13 16:52:06,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:52:06,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:06,829 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) [2024-10-13 16:52:06,833 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 [2024-10-13 16:52:06,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:52:06,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:52:06,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:52:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:52:06,885 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:52:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 16:52:06,885 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 16:52:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:52:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:52:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:52:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:52:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 16:52:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 16:52:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:52:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:52:06,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:52:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:52:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:52:06,888 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:52:07,027 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:52:07,029 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:52:07,375 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:52:07,375 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:52:07,669 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:52:07,669 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 16:52:07,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:52:07 BoogieIcfgContainer [2024-10-13 16:52:07,671 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:52:07,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:52:07,673 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:52:07,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:52:07,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:52:06" (1/3) ... [2024-10-13 16:52:07,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76faf1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:52:07, skipping insertion in model container [2024-10-13 16:52:07,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:52:06" (2/3) ... [2024-10-13 16:52:07,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76faf1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:52:07, skipping insertion in model container [2024-10-13 16:52:07,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:52:07" (3/3) ... [2024-10-13 16:52:07,682 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2024-10-13 16:52:07,699 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:52:07,699 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-13 16:52:07,699 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:52:07,805 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 16:52:07,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2024-10-13 16:52:07,885 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2024-10-13 16:52:07,886 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 16:52:07,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 118 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-10-13 16:52:07,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2024-10-13 16:52:07,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 41 transitions, 94 flow [2024-10-13 16:52:07,908 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:52:07,916 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;@25210704, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:52:07,917 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-13 16:52:07,920 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:52:07,920 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:52:07,921 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:52:07,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:07,921 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:52:07,922 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:07,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:07,929 INFO L85 PathProgramCache]: Analyzing trace with hash 481343, now seen corresponding path program 1 times [2024-10-13 16:52:07,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:07,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205720346] [2024-10-13 16:52:07,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:07,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:08,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:08,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205720346] [2024-10-13 16:52:08,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205720346] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:08,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:52:08,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:52:08,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743477294] [2024-10-13 16:52:08,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:08,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:52:08,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:08,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:52:08,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:52:08,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:52:08,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-10-13 16:52:08,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:08,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:52:08,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:08,654 INFO L124 PetriNetUnfolderBase]: 641/1139 cut-off events. [2024-10-13 16:52:08,654 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-13 16:52:08,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 1139 events. 641/1139 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8283 event pairs, 594 based on Foata normal form. 1/689 useless extension candidates. Maximal degree in co-relation 2142. Up to 994 conditions per place. [2024-10-13 16:52:08,672 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 27 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-10-13 16:52:08,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 160 flow [2024-10-13 16:52:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:52:08,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:52:08,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-10-13 16:52:08,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 16:52:08,688 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 94 flow. Second operand 4 states and 94 transitions. [2024-10-13 16:52:08,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 160 flow [2024-10-13 16:52:08,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 154 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:52:08,702 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 115 flow [2024-10-13 16:52:08,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-10-13 16:52:08,707 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2024-10-13 16:52:08,708 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 115 flow [2024-10-13 16:52:08,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-10-13 16:52:08,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:08,709 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:52:08,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:52:08,709 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:08,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:08,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1455239938, now seen corresponding path program 1 times [2024-10-13 16:52:08,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:08,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078638138] [2024-10-13 16:52:08,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:08,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:08,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:08,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078638138] [2024-10-13 16:52:08,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078638138] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:08,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321465545] [2024-10-13 16:52:08,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:08,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:08,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:08,890 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) [2024-10-13 16:52:08,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:52:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:08,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:52:08,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:09,037 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:52:09,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321465545] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:09,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:52:09,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:52:09,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087861788] [2024-10-13 16:52:09,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:09,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:52:09,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:09,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:52:09,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:52:09,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:52:09,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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) [2024-10-13 16:52:09,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:09,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:52:09,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:09,345 INFO L124 PetriNetUnfolderBase]: 641/1138 cut-off events. [2024-10-13 16:52:09,346 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:52:09,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 1138 events. 641/1138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8346 event pairs, 594 based on Foata normal form. 1/689 useless extension candidates. Maximal degree in co-relation 2242. Up to 989 conditions per place. [2024-10-13 16:52:09,356 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 23 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-10-13 16:52:09,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 171 flow [2024-10-13 16:52:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:52:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:52:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-10-13 16:52:09,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42907801418439717 [2024-10-13 16:52:09,359 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 115 flow. Second operand 6 states and 121 transitions. [2024-10-13 16:52:09,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 171 flow [2024-10-13 16:52:09,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:52:09,361 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 122 flow [2024-10-13 16:52:09,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-10-13 16:52:09,362 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2024-10-13 16:52:09,362 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 122 flow [2024-10-13 16:52:09,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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) [2024-10-13 16:52:09,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:09,363 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:52:09,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 16:52:09,568 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 [2024-10-13 16:52:09,569 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:09,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:09,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2132201723, now seen corresponding path program 1 times [2024-10-13 16:52:09,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:09,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645272064] [2024-10-13 16:52:09,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:09,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:09,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:09,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645272064] [2024-10-13 16:52:09,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645272064] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:09,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973385727] [2024-10-13 16:52:09,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:09,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:09,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:09,701 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) [2024-10-13 16:52:09,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:52:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:09,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:52:09,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:09,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:09,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:09,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973385727] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:52:09,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:52:09,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:52:09,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335769157] [2024-10-13 16:52:09,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:52:09,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:52:09,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:09,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:52:09,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:52:09,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:52:09,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 122 flow. Second operand has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:09,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:09,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:52:09,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:10,054 INFO L124 PetriNetUnfolderBase]: 644/1150 cut-off events. [2024-10-13 16:52:10,055 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 16:52:10,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 1150 events. 644/1150 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8318 event pairs, 594 based on Foata normal form. 3/701 useless extension candidates. Maximal degree in co-relation 2243. Up to 996 conditions per place. [2024-10-13 16:52:10,064 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 26 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-10-13 16:52:10,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 254 flow [2024-10-13 16:52:10,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:52:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:52:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-10-13 16:52:10,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4085106382978723 [2024-10-13 16:52:10,066 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 122 flow. Second operand 10 states and 192 transitions. [2024-10-13 16:52:10,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 254 flow [2024-10-13 16:52:10,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 208 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-13 16:52:10,068 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2024-10-13 16:52:10,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-10-13 16:52:10,069 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2024-10-13 16:52:10,069 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2024-10-13 16:52:10,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:10,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:10,070 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:10,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:52:10,274 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 [2024-10-13 16:52:10,275 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:10,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2058279086, now seen corresponding path program 1 times [2024-10-13 16:52:10,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:10,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978102833] [2024-10-13 16:52:10,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:10,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:10,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978102833] [2024-10-13 16:52:10,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978102833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:10,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:52:10,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:52:10,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883043353] [2024-10-13 16:52:10,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:10,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:52:10,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:10,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:52:10,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:52:10,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 16:52:10,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:10,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:10,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 16:52:10,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:10,526 INFO L124 PetriNetUnfolderBase]: 921/1501 cut-off events. [2024-10-13 16:52:10,526 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-10-13 16:52:10,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2976 conditions, 1501 events. 921/1501 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7857 event pairs, 301 based on Foata normal form. 48/989 useless extension candidates. Maximal degree in co-relation 2942. Up to 1026 conditions per place. [2024-10-13 16:52:10,538 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 48 selfloop transitions, 3 changer transitions 1/65 dead transitions. [2024-10-13 16:52:10,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 65 transitions, 309 flow [2024-10-13 16:52:10,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:52:10,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:52:10,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-10-13 16:52:10,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6737588652482269 [2024-10-13 16:52:10,540 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 174 flow. Second operand 3 states and 95 transitions. [2024-10-13 16:52:10,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 65 transitions, 309 flow [2024-10-13 16:52:10,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 298 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-13 16:52:10,542 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 188 flow [2024-10-13 16:52:10,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-10-13 16:52:10,543 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2024-10-13 16:52:10,544 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 188 flow [2024-10-13 16:52:10,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:10,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:10,544 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:10,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:52:10,544 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:10,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:10,545 INFO L85 PathProgramCache]: Analyzing trace with hash -80674940, now seen corresponding path program 1 times [2024-10-13 16:52:10,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:10,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229041084] [2024-10-13 16:52:10,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:10,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:10,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:10,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229041084] [2024-10-13 16:52:10,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229041084] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:10,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:52:10,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:52:10,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596368576] [2024-10-13 16:52:10,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:10,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:52:10,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:52:10,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:52:10,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 16:52:10,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:10,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:10,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 16:52:10,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:10,782 INFO L124 PetriNetUnfolderBase]: 681/1097 cut-off events. [2024-10-13 16:52:10,783 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-10-13 16:52:10,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2566 conditions, 1097 events. 681/1097 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5431 event pairs, 436 based on Foata normal form. 0/804 useless extension candidates. Maximal degree in co-relation 2531. Up to 970 conditions per place. [2024-10-13 16:52:10,789 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2024-10-13 16:52:10,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 260 flow [2024-10-13 16:52:10,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:52:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:52:10,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-10-13 16:52:10,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-10-13 16:52:10,791 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 188 flow. Second operand 3 states and 77 transitions. [2024-10-13 16:52:10,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 260 flow [2024-10-13 16:52:10,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:52:10,793 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 183 flow [2024-10-13 16:52:10,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-10-13 16:52:10,794 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2024-10-13 16:52:10,794 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 183 flow [2024-10-13 16:52:10,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:10,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:10,795 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:10,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:52:10,795 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:10,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash -80674939, now seen corresponding path program 1 times [2024-10-13 16:52:10,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:10,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661280219] [2024-10-13 16:52:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:10,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:10,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:10,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:10,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661280219] [2024-10-13 16:52:10,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661280219] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:10,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:52:10,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:52:10,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176105892] [2024-10-13 16:52:10,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:10,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:52:10,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:10,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:52:10,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:52:10,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 16:52:10,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-10-13 16:52:10,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:10,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 16:52:10,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:11,023 INFO L124 PetriNetUnfolderBase]: 732/1212 cut-off events. [2024-10-13 16:52:11,023 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-10-13 16:52:11,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 1212 events. 732/1212 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6163 event pairs, 488 based on Foata normal form. 0/920 useless extension candidates. Maximal degree in co-relation 2756. Up to 968 conditions per place. [2024-10-13 16:52:11,032 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 35 selfloop transitions, 2 changer transitions 12/62 dead transitions. [2024-10-13 16:52:11,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 309 flow [2024-10-13 16:52:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:52:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:52:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-10-13 16:52:11,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-10-13 16:52:11,034 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 183 flow. Second operand 4 states and 107 transitions. [2024-10-13 16:52:11,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 309 flow [2024-10-13 16:52:11,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:52:11,036 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 185 flow [2024-10-13 16:52:11,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-10-13 16:52:11,037 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2024-10-13 16:52:11,038 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 185 flow [2024-10-13 16:52:11,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-10-13 16:52:11,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:11,038 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:11,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:52:11,038 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:11,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:11,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2140607330, now seen corresponding path program 1 times [2024-10-13 16:52:11,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:11,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780413741] [2024-10-13 16:52:11,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:11,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:11,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:11,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780413741] [2024-10-13 16:52:11,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780413741] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:11,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055495867] [2024-10-13 16:52:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:11,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:11,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:11,183 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) [2024-10-13 16:52:11,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:52:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:11,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:52:11,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:52:11,325 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:52:11,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055495867] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:11,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:52:11,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-10-13 16:52:11,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819774124] [2024-10-13 16:52:11,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:11,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:52:11,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:11,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:52:11,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:52:11,328 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 16:52:11,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2024-10-13 16:52:11,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:11,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 16:52:11,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:11,457 INFO L124 PetriNetUnfolderBase]: 380/698 cut-off events. [2024-10-13 16:52:11,457 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-10-13 16:52:11,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 698 events. 380/698 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3447 event pairs, 148 based on Foata normal form. 92/643 useless extension candidates. Maximal degree in co-relation 1568. Up to 399 conditions per place. [2024-10-13 16:52:11,463 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 33 selfloop transitions, 6 changer transitions 4/56 dead transitions. [2024-10-13 16:52:11,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 290 flow [2024-10-13 16:52:11,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:52:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:52:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-10-13 16:52:11,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-10-13 16:52:11,464 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 185 flow. Second operand 4 states and 102 transitions. [2024-10-13 16:52:11,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 290 flow [2024-10-13 16:52:11,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 284 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-13 16:52:11,466 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 178 flow [2024-10-13 16:52:11,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-10-13 16:52:11,467 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2024-10-13 16:52:11,467 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 178 flow [2024-10-13 16:52:11,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2024-10-13 16:52:11,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:11,471 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-13 16:52:11,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 16:52:11,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:11,672 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:11,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:11,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1730512680, now seen corresponding path program 2 times [2024-10-13 16:52:11,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:11,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500402590] [2024-10-13 16:52:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:11,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:11,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:11,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500402590] [2024-10-13 16:52:11,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500402590] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:11,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599361384] [2024-10-13 16:52:11,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:52:11,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:11,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:11,835 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) [2024-10-13 16:52:11,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:52:11,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:52:11,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:52:11,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:52:11,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:52:11,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:52:11,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599361384] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:52:11,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:52:11,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-13 16:52:11,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185764828] [2024-10-13 16:52:11,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:52:11,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 16:52:11,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:11,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 16:52:11,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-13 16:52:11,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:52:11,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 178 flow. Second operand has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 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) [2024-10-13 16:52:11,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:11,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:52:11,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:12,241 INFO L124 PetriNetUnfolderBase]: 240/417 cut-off events. [2024-10-13 16:52:12,241 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2024-10-13 16:52:12,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 417 events. 240/417 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1559 event pairs, 127 based on Foata normal form. 2/326 useless extension candidates. Maximal degree in co-relation 1087. Up to 339 conditions per place. [2024-10-13 16:52:12,245 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 17 selfloop transitions, 18 changer transitions 0/47 dead transitions. [2024-10-13 16:52:12,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 47 transitions, 254 flow [2024-10-13 16:52:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:52:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:52:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 245 transitions. [2024-10-13 16:52:12,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3723404255319149 [2024-10-13 16:52:12,247 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 178 flow. Second operand 14 states and 245 transitions. [2024-10-13 16:52:12,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 47 transitions, 254 flow [2024-10-13 16:52:12,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 47 transitions, 230 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-10-13 16:52:12,249 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 196 flow [2024-10-13 16:52:12,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=196, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-10-13 16:52:12,250 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2024-10-13 16:52:12,250 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 196 flow [2024-10-13 16:52:12,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 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) [2024-10-13 16:52:12,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:12,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:12,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 16:52:12,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:12,452 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:12,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:12,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1814298192, now seen corresponding path program 1 times [2024-10-13 16:52:12,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:12,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622277054] [2024-10-13 16:52:12,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:12,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:12,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:12,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:12,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622277054] [2024-10-13 16:52:12,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622277054] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:12,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31344367] [2024-10-13 16:52:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:12,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:12,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:12,869 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) [2024-10-13 16:52:12,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:52:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:12,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-13 16:52:12,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:13,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-13 16:52:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:13,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:13,700 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 21 treesize of output 19 [2024-10-13 16:52:13,706 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 28 treesize of output 22 [2024-10-13 16:52:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:13,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31344367] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:52:13,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:52:13,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-10-13 16:52:13,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224885872] [2024-10-13 16:52:13,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:52:13,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 16:52:13,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:13,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 16:52:13,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-10-13 16:52:13,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:52:13,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 196 flow. Second operand has 18 states, 18 states have (on average 16.833333333333332) internal successors, (303), 18 states have internal predecessors, (303), 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) [2024-10-13 16:52:13,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:13,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:52:13,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:15,877 INFO L124 PetriNetUnfolderBase]: 852/1745 cut-off events. [2024-10-13 16:52:15,878 INFO L125 PetriNetUnfolderBase]: For 434/434 co-relation queries the response was YES. [2024-10-13 16:52:15,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 1745 events. 852/1745 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10914 event pairs, 111 based on Foata normal form. 54/1399 useless extension candidates. Maximal degree in co-relation 3780. Up to 565 conditions per place. [2024-10-13 16:52:15,891 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 121 selfloop transitions, 40 changer transitions 5/178 dead transitions. [2024-10-13 16:52:15,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 178 transitions, 898 flow [2024-10-13 16:52:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 16:52:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 16:52:15,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 528 transitions. [2024-10-13 16:52:15,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4884366327474561 [2024-10-13 16:52:15,894 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 196 flow. Second operand 23 states and 528 transitions. [2024-10-13 16:52:15,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 178 transitions, 898 flow [2024-10-13 16:52:15,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 178 transitions, 830 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-13 16:52:15,898 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 462 flow [2024-10-13 16:52:15,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=462, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-10-13 16:52:15,899 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 39 predicate places. [2024-10-13 16:52:15,899 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 462 flow [2024-10-13 16:52:15,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.833333333333332) internal successors, (303), 18 states have internal predecessors, (303), 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) [2024-10-13 16:52:15,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:15,900 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:15,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:52:16,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:16,101 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:16,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:16,101 INFO L85 PathProgramCache]: Analyzing trace with hash -268535991, now seen corresponding path program 1 times [2024-10-13 16:52:16,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:16,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521249762] [2024-10-13 16:52:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:16,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:52:16,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:16,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521249762] [2024-10-13 16:52:16,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521249762] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:16,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:52:16,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:52:16,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941452432] [2024-10-13 16:52:16,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:16,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:52:16,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:16,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:52:16,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:52:16,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:52:16,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:16,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:16,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:52:16,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:16,358 INFO L124 PetriNetUnfolderBase]: 894/1554 cut-off events. [2024-10-13 16:52:16,358 INFO L125 PetriNetUnfolderBase]: For 13143/13143 co-relation queries the response was YES. [2024-10-13 16:52:16,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6166 conditions, 1554 events. 894/1554 cut-off events. For 13143/13143 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8795 event pairs, 321 based on Foata normal form. 18/1501 useless extension candidates. Maximal degree in co-relation 6140. Up to 1126 conditions per place. [2024-10-13 16:52:16,372 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 66 selfloop transitions, 2 changer transitions 1/79 dead transitions. [2024-10-13 16:52:16,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 628 flow [2024-10-13 16:52:16,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:52:16,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:52:16,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-13 16:52:16,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-10-13 16:52:16,373 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 462 flow. Second operand 3 states and 78 transitions. [2024-10-13 16:52:16,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 628 flow [2024-10-13 16:52:16,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 566 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-10-13 16:52:16,402 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 344 flow [2024-10-13 16:52:16,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-10-13 16:52:16,404 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 29 predicate places. [2024-10-13 16:52:16,404 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 344 flow [2024-10-13 16:52:16,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:16,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:16,404 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:16,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:52:16,405 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:16,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:16,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1850361159, now seen corresponding path program 1 times [2024-10-13 16:52:16,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:16,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054790160] [2024-10-13 16:52:16,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:16,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:17,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:17,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054790160] [2024-10-13 16:52:17,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054790160] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:17,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596826419] [2024-10-13 16:52:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:17,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:17,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:17,376 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) [2024-10-13 16:52:17,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:52:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:17,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-13 16:52:17,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:52:17,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:17,699 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:52:17,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-10-13 16:52:17,806 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:52:17,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596826419] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:17,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 16:52:17,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10, 6] total 18 [2024-10-13 16:52:17,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421043338] [2024-10-13 16:52:17,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:17,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:52:17,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:17,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:52:17,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-10-13 16:52:17,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 16:52:17,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:17,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:17,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 16:52:17,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:17,984 INFO L124 PetriNetUnfolderBase]: 594/1218 cut-off events. [2024-10-13 16:52:17,984 INFO L125 PetriNetUnfolderBase]: For 5654/5654 co-relation queries the response was YES. [2024-10-13 16:52:17,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4048 conditions, 1218 events. 594/1218 cut-off events. For 5654/5654 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6976 event pairs, 69 based on Foata normal form. 48/1245 useless extension candidates. Maximal degree in co-relation 4025. Up to 409 conditions per place. [2024-10-13 16:52:17,998 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 60 selfloop transitions, 9 changer transitions 1/83 dead transitions. [2024-10-13 16:52:17,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 556 flow [2024-10-13 16:52:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:52:18,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:52:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-10-13 16:52:18,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-10-13 16:52:18,000 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 344 flow. Second operand 4 states and 105 transitions. [2024-10-13 16:52:18,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 556 flow [2024-10-13 16:52:18,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 541 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:52:18,010 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 374 flow [2024-10-13 16:52:18,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2024-10-13 16:52:18,011 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2024-10-13 16:52:18,011 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 374 flow [2024-10-13 16:52:18,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:18,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:18,011 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:18,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 16:52:18,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:18,216 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:18,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:18,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1348424623, now seen corresponding path program 1 times [2024-10-13 16:52:18,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:18,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499107293] [2024-10-13 16:52:18,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:18,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:52:18,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:18,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499107293] [2024-10-13 16:52:18,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499107293] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:18,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404985920] [2024-10-13 16:52:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:18,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:18,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:18,304 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) [2024-10-13 16:52:18,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:52:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:18,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:52:18,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 16:52:18,410 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:52:18,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404985920] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:18,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:52:18,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2024-10-13 16:52:18,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238293262] [2024-10-13 16:52:18,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:18,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:52:18,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:18,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:52:18,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:52:18,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 16:52:18,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:18,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:18,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 16:52:18,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:18,645 INFO L124 PetriNetUnfolderBase]: 852/1692 cut-off events. [2024-10-13 16:52:18,645 INFO L125 PetriNetUnfolderBase]: For 10766/10766 co-relation queries the response was YES. [2024-10-13 16:52:18,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6263 conditions, 1692 events. 852/1692 cut-off events. For 10766/10766 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10270 event pairs, 159 based on Foata normal form. 66/1726 useless extension candidates. Maximal degree in co-relation 6238. Up to 631 conditions per place. [2024-10-13 16:52:18,665 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 62 selfloop transitions, 18 changer transitions 1/94 dead transitions. [2024-10-13 16:52:18,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 94 transitions, 727 flow [2024-10-13 16:52:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:52:18,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:52:18,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-13 16:52:18,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5797872340425532 [2024-10-13 16:52:18,666 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 374 flow. Second operand 4 states and 109 transitions. [2024-10-13 16:52:18,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 94 transitions, 727 flow [2024-10-13 16:52:18,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 712 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-13 16:52:18,680 INFO L231 Difference]: Finished difference. Result has 83 places, 79 transitions, 542 flow [2024-10-13 16:52:18,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=542, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2024-10-13 16:52:18,681 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 36 predicate places. [2024-10-13 16:52:18,681 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 542 flow [2024-10-13 16:52:18,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:18,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:18,682 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:18,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 16:52:18,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:18,887 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:18,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1850361158, now seen corresponding path program 2 times [2024-10-13 16:52:18,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:18,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955728160] [2024-10-13 16:52:18,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:18,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:19,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:19,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955728160] [2024-10-13 16:52:19,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955728160] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:19,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301347845] [2024-10-13 16:52:19,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:52:19,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:19,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:19,760 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) [2024-10-13 16:52:19,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:52:19,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:52:19,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:52:19,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:52:19,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:52:19,931 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:52:19,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301347845] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:19,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:52:19,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 12 [2024-10-13 16:52:19,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427283613] [2024-10-13 16:52:19,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:19,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:52:19,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:19,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:52:19,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-10-13 16:52:19,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 16:52:19,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 542 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:19,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:19,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 16:52:19,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:20,187 INFO L124 PetriNetUnfolderBase]: 804/1698 cut-off events. [2024-10-13 16:52:20,188 INFO L125 PetriNetUnfolderBase]: For 9507/9507 co-relation queries the response was YES. [2024-10-13 16:52:20,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6448 conditions, 1698 events. 804/1698 cut-off events. For 9507/9507 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10719 event pairs, 81 based on Foata normal form. 36/1713 useless extension candidates. Maximal degree in co-relation 6420. Up to 787 conditions per place. [2024-10-13 16:52:20,203 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 72 selfloop transitions, 10 changer transitions 1/96 dead transitions. [2024-10-13 16:52:20,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 791 flow [2024-10-13 16:52:20,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:52:20,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:52:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-10-13 16:52:20,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-10-13 16:52:20,205 INFO L175 Difference]: Start difference. First operand has 83 places, 79 transitions, 542 flow. Second operand 4 states and 104 transitions. [2024-10-13 16:52:20,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 791 flow [2024-10-13 16:52:20,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 96 transitions, 775 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 16:52:20,218 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 526 flow [2024-10-13 16:52:20,218 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=526, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2024-10-13 16:52:20,219 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 37 predicate places. [2024-10-13 16:52:20,219 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 526 flow [2024-10-13 16:52:20,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:20,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:20,219 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:20,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 16:52:20,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 16:52:20,424 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:20,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:20,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1123608725, now seen corresponding path program 1 times [2024-10-13 16:52:20,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:20,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055261067] [2024-10-13 16:52:20,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:20,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:52:20,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:20,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055261067] [2024-10-13 16:52:20,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055261067] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:20,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105496250] [2024-10-13 16:52:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:20,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:20,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:20,572 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) [2024-10-13 16:52:20,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 16:52:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:20,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 16:52:20,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:20,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:52:20,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:52:20,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105496250] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:52:20,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:52:20,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-13 16:52:20,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481013972] [2024-10-13 16:52:20,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:52:20,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 16:52:20,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:20,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 16:52:20,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-10-13 16:52:20,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:52:20,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 526 flow. Second operand has 18 states, 18 states have (on average 16.555555555555557) internal successors, (298), 18 states have internal predecessors, (298), 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) [2024-10-13 16:52:20,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:20,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:52:20,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:21,148 INFO L124 PetriNetUnfolderBase]: 558/1111 cut-off events. [2024-10-13 16:52:21,149 INFO L125 PetriNetUnfolderBase]: For 6899/6899 co-relation queries the response was YES. [2024-10-13 16:52:21,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 1111 events. 558/1111 cut-off events. For 6899/6899 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6196 event pairs, 333 based on Foata normal form. 12/1072 useless extension candidates. Maximal degree in co-relation 4499. Up to 772 conditions per place. [2024-10-13 16:52:21,158 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 33 selfloop transitions, 12 changer transitions 22/80 dead transitions. [2024-10-13 16:52:21,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 571 flow [2024-10-13 16:52:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:52:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:52:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-10-13 16:52:21,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42789598108747046 [2024-10-13 16:52:21,160 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 526 flow. Second operand 9 states and 181 transitions. [2024-10-13 16:52:21,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 571 flow [2024-10-13 16:52:21,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 80 transitions, 530 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-10-13 16:52:21,173 INFO L231 Difference]: Finished difference. Result has 78 places, 58 transitions, 336 flow [2024-10-13 16:52:21,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=336, PETRI_PLACES=78, PETRI_TRANSITIONS=58} [2024-10-13 16:52:21,173 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2024-10-13 16:52:21,173 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 58 transitions, 336 flow [2024-10-13 16:52:21,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.555555555555557) internal successors, (298), 18 states have internal predecessors, (298), 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) [2024-10-13 16:52:21,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:21,174 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:21,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 16:52:21,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 16:52:21,379 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:21,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:21,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1834377532, now seen corresponding path program 2 times [2024-10-13 16:52:21,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:21,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3358087] [2024-10-13 16:52:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:21,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:52:21,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:21,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3358087] [2024-10-13 16:52:21,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3358087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:21,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:52:21,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:52:21,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4495158] [2024-10-13 16:52:21,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:21,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:52:21,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:21,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:52:21,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:52:21,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-10-13 16:52:21,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 58 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:21,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:21,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-10-13 16:52:21,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:21,756 INFO L124 PetriNetUnfolderBase]: 1211/2063 cut-off events. [2024-10-13 16:52:21,756 INFO L125 PetriNetUnfolderBase]: For 9538/9538 co-relation queries the response was YES. [2024-10-13 16:52:21,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8093 conditions, 2063 events. 1211/2063 cut-off events. For 9538/9538 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11407 event pairs, 188 based on Foata normal form. 120/2179 useless extension candidates. Maximal degree in co-relation 8070. Up to 942 conditions per place. [2024-10-13 16:52:21,773 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 64 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2024-10-13 16:52:21,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 607 flow [2024-10-13 16:52:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:52:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:52:21,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-10-13 16:52:21,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 16:52:21,774 INFO L175 Difference]: Start difference. First operand has 78 places, 58 transitions, 336 flow. Second operand 4 states and 94 transitions. [2024-10-13 16:52:21,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 607 flow [2024-10-13 16:52:21,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 77 transitions, 569 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-10-13 16:52:21,780 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 327 flow [2024-10-13 16:52:21,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=327, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-10-13 16:52:21,780 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 21 predicate places. [2024-10-13 16:52:21,780 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 327 flow [2024-10-13 16:52:21,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:21,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:21,781 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:21,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 16:52:21,781 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:21,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:21,782 INFO L85 PathProgramCache]: Analyzing trace with hash -219267832, now seen corresponding path program 1 times [2024-10-13 16:52:21,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:21,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147080852] [2024-10-13 16:52:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:22,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:22,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147080852] [2024-10-13 16:52:22,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147080852] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:22,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590055421] [2024-10-13 16:52:22,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:22,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:22,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:22,345 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:52:22,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 16:52:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:22,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-13 16:52:22,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:22,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:23,205 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-10-13 16:52:23,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 43 [2024-10-13 16:52:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:23,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590055421] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:52:23,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:52:23,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2024-10-13 16:52:23,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791859932] [2024-10-13 16:52:23,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:52:23,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-13 16:52:23,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:23,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-13 16:52:23,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2024-10-13 16:52:23,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:52:23,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 327 flow. Second operand has 32 states, 32 states have (on average 16.5) internal successors, (528), 32 states have internal predecessors, (528), 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) [2024-10-13 16:52:23,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:23,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:52:23,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:25,720 INFO L124 PetriNetUnfolderBase]: 2279/4549 cut-off events. [2024-10-13 16:52:25,721 INFO L125 PetriNetUnfolderBase]: For 19932/19932 co-relation queries the response was YES. [2024-10-13 16:52:25,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16426 conditions, 4549 events. 2279/4549 cut-off events. For 19932/19932 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 32967 event pairs, 164 based on Foata normal form. 168/4705 useless extension candidates. Maximal degree in co-relation 16405. Up to 1495 conditions per place. [2024-10-13 16:52:25,762 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 186 selfloop transitions, 80 changer transitions 5/285 dead transitions. [2024-10-13 16:52:25,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 285 transitions, 2037 flow [2024-10-13 16:52:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-13 16:52:25,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-10-13 16:52:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 759 transitions. [2024-10-13 16:52:25,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47496871088861076 [2024-10-13 16:52:25,769 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 327 flow. Second operand 34 states and 759 transitions. [2024-10-13 16:52:25,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 285 transitions, 2037 flow [2024-10-13 16:52:25,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 285 transitions, 2031 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-13 16:52:25,783 INFO L231 Difference]: Finished difference. Result has 114 places, 138 transitions, 1373 flow [2024-10-13 16:52:25,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1373, PETRI_PLACES=114, PETRI_TRANSITIONS=138} [2024-10-13 16:52:25,784 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 67 predicate places. [2024-10-13 16:52:25,784 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 138 transitions, 1373 flow [2024-10-13 16:52:25,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 16.5) internal successors, (528), 32 states have internal predecessors, (528), 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) [2024-10-13 16:52:25,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:25,785 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:25,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 16:52:25,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 16:52:25,988 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:25,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:25,989 INFO L85 PathProgramCache]: Analyzing trace with hash 257360822, now seen corresponding path program 1 times [2024-10-13 16:52:25,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:25,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916593569] [2024-10-13 16:52:25,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:25,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:27,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:27,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916593569] [2024-10-13 16:52:27,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916593569] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:27,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060514576] [2024-10-13 16:52:27,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:27,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:27,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:27,238 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:52:27,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 16:52:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:27,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-13 16:52:27,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:52:27,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:27,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:52:27,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-10-13 16:52:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:52:27,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060514576] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:52:27,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:52:27,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 4] total 24 [2024-10-13 16:52:27,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096937313] [2024-10-13 16:52:27,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:52:27,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 16:52:27,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:27,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 16:52:27,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2024-10-13 16:52:27,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:52:27,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 138 transitions, 1373 flow. Second operand has 26 states, 26 states have (on average 16.923076923076923) internal successors, (440), 26 states have internal predecessors, (440), 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) [2024-10-13 16:52:27,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:27,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:52:27,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:29,220 INFO L124 PetriNetUnfolderBase]: 3095/6275 cut-off events. [2024-10-13 16:52:29,220 INFO L125 PetriNetUnfolderBase]: For 68538/68538 co-relation queries the response was YES. [2024-10-13 16:52:29,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29327 conditions, 6275 events. 3095/6275 cut-off events. For 68538/68538 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 48821 event pairs, 153 based on Foata normal form. 318/6575 useless extension candidates. Maximal degree in co-relation 29291. Up to 2023 conditions per place. [2024-10-13 16:52:29,286 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 188 selfloop transitions, 76 changer transitions 6/284 dead transitions. [2024-10-13 16:52:29,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 284 transitions, 3014 flow [2024-10-13 16:52:29,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-13 16:52:29,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-13 16:52:29,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 545 transitions. [2024-10-13 16:52:29,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46382978723404256 [2024-10-13 16:52:29,288 INFO L175 Difference]: Start difference. First operand has 114 places, 138 transitions, 1373 flow. Second operand 25 states and 545 transitions. [2024-10-13 16:52:29,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 284 transitions, 3014 flow [2024-10-13 16:52:29,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 284 transitions, 2685 flow, removed 159 selfloop flow, removed 5 redundant places. [2024-10-13 16:52:29,343 INFO L231 Difference]: Finished difference. Result has 144 places, 166 transitions, 1693 flow [2024-10-13 16:52:29,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1693, PETRI_PLACES=144, PETRI_TRANSITIONS=166} [2024-10-13 16:52:29,344 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 97 predicate places. [2024-10-13 16:52:29,344 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 166 transitions, 1693 flow [2024-10-13 16:52:29,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.923076923076923) internal successors, (440), 26 states have internal predecessors, (440), 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) [2024-10-13 16:52:29,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:29,344 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:29,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-13 16:52:29,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 16:52:29,545 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:29,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:29,546 INFO L85 PathProgramCache]: Analyzing trace with hash -997958886, now seen corresponding path program 2 times [2024-10-13 16:52:29,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:29,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022568502] [2024-10-13 16:52:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:29,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:30,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:30,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:30,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022568502] [2024-10-13 16:52:30,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022568502] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:30,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925537081] [2024-10-13 16:52:30,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:52:30,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:30,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:30,188 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:52:30,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 16:52:30,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:52:30,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:52:30,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-13 16:52:30,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:30,380 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 [2024-10-13 16:52:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:30,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:31,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2024-10-13 16:52:31,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:52:31,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 143 [2024-10-13 16:52:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:31,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925537081] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:52:31,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:52:31,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2024-10-13 16:52:31,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266624591] [2024-10-13 16:52:31,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:52:31,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-13 16:52:31,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:31,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-13 16:52:31,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2024-10-13 16:52:31,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:52:31,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 166 transitions, 1693 flow. Second operand has 35 states, 35 states have (on average 16.37142857142857) internal successors, (573), 35 states have internal predecessors, (573), 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) [2024-10-13 16:52:31,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:31,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:52:31,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:35,600 INFO L124 PetriNetUnfolderBase]: 5328/10509 cut-off events. [2024-10-13 16:52:35,600 INFO L125 PetriNetUnfolderBase]: For 152916/152916 co-relation queries the response was YES. [2024-10-13 16:52:35,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53281 conditions, 10509 events. 5328/10509 cut-off events. For 152916/152916 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 86349 event pairs, 401 based on Foata normal form. 372/10843 useless extension candidates. Maximal degree in co-relation 53233. Up to 2773 conditions per place. [2024-10-13 16:52:35,690 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 252 selfloop transitions, 196 changer transitions 6/468 dead transitions. [2024-10-13 16:52:35,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 468 transitions, 5427 flow [2024-10-13 16:52:35,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-13 16:52:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-10-13 16:52:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 877 transitions. [2024-10-13 16:52:35,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4664893617021277 [2024-10-13 16:52:35,693 INFO L175 Difference]: Start difference. First operand has 144 places, 166 transitions, 1693 flow. Second operand 40 states and 877 transitions. [2024-10-13 16:52:35,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 468 transitions, 5427 flow [2024-10-13 16:52:35,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 468 transitions, 5271 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-10-13 16:52:35,930 INFO L231 Difference]: Finished difference. Result has 191 places, 296 transitions, 4447 flow [2024-10-13 16:52:35,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4447, PETRI_PLACES=191, PETRI_TRANSITIONS=296} [2024-10-13 16:52:35,931 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 144 predicate places. [2024-10-13 16:52:35,931 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 296 transitions, 4447 flow [2024-10-13 16:52:35,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 16.37142857142857) internal successors, (573), 35 states have internal predecessors, (573), 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) [2024-10-13 16:52:35,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:35,932 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:35,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 16:52:36,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 16:52:36,137 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:36,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:36,137 INFO L85 PathProgramCache]: Analyzing trace with hash -997958887, now seen corresponding path program 2 times [2024-10-13 16:52:36,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:36,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570005160] [2024-10-13 16:52:36,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:36,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:37,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:37,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570005160] [2024-10-13 16:52:37,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570005160] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:37,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21486383] [2024-10-13 16:52:37,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:52:37,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:37,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:37,050 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:52:37,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 16:52:37,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:52:37,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:52:37,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-13 16:52:37,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:37,282 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 [2024-10-13 16:52:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:37,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:38,188 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 80 treesize of output 72 [2024-10-13 16:52:38,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:52:38,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 143 [2024-10-13 16:52:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:38,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21486383] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:52:38,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:52:38,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 31 [2024-10-13 16:52:38,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644586921] [2024-10-13 16:52:38,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:52:38,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-13 16:52:38,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:38,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-13 16:52:38,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2024-10-13 16:52:39,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:52:39,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 296 transitions, 4447 flow. Second operand has 33 states, 33 states have (on average 16.454545454545453) internal successors, (543), 33 states have internal predecessors, (543), 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) [2024-10-13 16:52:39,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:39,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:52:39,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:42,249 INFO L124 PetriNetUnfolderBase]: 5454/10815 cut-off events. [2024-10-13 16:52:42,250 INFO L125 PetriNetUnfolderBase]: For 253720/253720 co-relation queries the response was YES. [2024-10-13 16:52:42,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62523 conditions, 10815 events. 5454/10815 cut-off events. For 253720/253720 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 89264 event pairs, 377 based on Foata normal form. 342/11116 useless extension candidates. Maximal degree in co-relation 62457. Up to 4272 conditions per place. [2024-10-13 16:52:42,502 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 332 selfloop transitions, 105 changer transitions 7/458 dead transitions. [2024-10-13 16:52:42,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 458 transitions, 6573 flow [2024-10-13 16:52:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-13 16:52:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-13 16:52:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 692 transitions. [2024-10-13 16:52:42,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4601063829787234 [2024-10-13 16:52:42,507 INFO L175 Difference]: Start difference. First operand has 191 places, 296 transitions, 4447 flow. Second operand 32 states and 692 transitions. [2024-10-13 16:52:42,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 458 transitions, 6573 flow [2024-10-13 16:52:43,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 458 transitions, 5327 flow, removed 597 selfloop flow, removed 16 redundant places. [2024-10-13 16:52:43,052 INFO L231 Difference]: Finished difference. Result has 215 places, 305 transitions, 4113 flow [2024-10-13 16:52:43,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3507, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4113, PETRI_PLACES=215, PETRI_TRANSITIONS=305} [2024-10-13 16:52:43,053 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 168 predicate places. [2024-10-13 16:52:43,053 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 305 transitions, 4113 flow [2024-10-13 16:52:43,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 16.454545454545453) internal successors, (543), 33 states have internal predecessors, (543), 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) [2024-10-13 16:52:43,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:43,054 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:43,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-13 16:52:43,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:43,254 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:43,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:43,255 INFO L85 PathProgramCache]: Analyzing trace with hash 507440421, now seen corresponding path program 3 times [2024-10-13 16:52:43,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:43,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785319852] [2024-10-13 16:52:43,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:43,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:44,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:44,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785319852] [2024-10-13 16:52:44,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785319852] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:44,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071287082] [2024-10-13 16:52:44,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:52:44,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:44,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:44,361 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:52:44,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 16:52:44,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 16:52:44,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:52:44,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 16:52:44,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:52:44,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:44,784 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:52:44,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2024-10-13 16:52:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:52:44,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071287082] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:52:44,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:52:44,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 20 [2024-10-13 16:52:44,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541595203] [2024-10-13 16:52:44,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:52:44,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-13 16:52:44,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:44,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-13 16:52:44,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-10-13 16:52:45,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:52:45,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 305 transitions, 4113 flow. Second operand has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 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) [2024-10-13 16:52:45,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:45,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:52:45,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:47,446 INFO L124 PetriNetUnfolderBase]: 5256/10489 cut-off events. [2024-10-13 16:52:47,446 INFO L125 PetriNetUnfolderBase]: For 157980/157980 co-relation queries the response was YES. [2024-10-13 16:52:47,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52025 conditions, 10489 events. 5256/10489 cut-off events. For 157980/157980 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 86139 event pairs, 377 based on Foata normal form. 108/10571 useless extension candidates. Maximal degree in co-relation 51953. Up to 4585 conditions per place. [2024-10-13 16:52:47,562 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 299 selfloop transitions, 110 changer transitions 8/431 dead transitions. [2024-10-13 16:52:47,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 431 transitions, 5472 flow [2024-10-13 16:52:47,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-13 16:52:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-13 16:52:47,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 576 transitions. [2024-10-13 16:52:47,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45390070921985815 [2024-10-13 16:52:47,564 INFO L175 Difference]: Start difference. First operand has 215 places, 305 transitions, 4113 flow. Second operand 27 states and 576 transitions. [2024-10-13 16:52:47,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 431 transitions, 5472 flow [2024-10-13 16:52:48,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 431 transitions, 5140 flow, removed 81 selfloop flow, removed 24 redundant places. [2024-10-13 16:52:48,229 INFO L231 Difference]: Finished difference. Result has 219 places, 304 transitions, 3986 flow [2024-10-13 16:52:48,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3737, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3986, PETRI_PLACES=219, PETRI_TRANSITIONS=304} [2024-10-13 16:52:48,230 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 172 predicate places. [2024-10-13 16:52:48,230 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 304 transitions, 3986 flow [2024-10-13 16:52:48,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 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) [2024-10-13 16:52:48,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:48,230 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:48,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-13 16:52:48,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:48,431 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:48,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:48,431 INFO L85 PathProgramCache]: Analyzing trace with hash 815974286, now seen corresponding path program 4 times [2024-10-13 16:52:48,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:48,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443147661] [2024-10-13 16:52:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:48,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:52:48,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:48,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443147661] [2024-10-13 16:52:48,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443147661] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:48,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633136506] [2024-10-13 16:52:48,580 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 16:52:48,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:48,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:48,582 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:52:48,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 16:52:48,668 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 16:52:48,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:52:48,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:52:48,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 16:52:48,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:52:48,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633136506] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:52:48,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:52:48,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 5] total 16 [2024-10-13 16:52:48,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354818598] [2024-10-13 16:52:48,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:52:48,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 16:52:48,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:48,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 16:52:48,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-10-13 16:52:48,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:52:48,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 304 transitions, 3986 flow. Second operand has 18 states, 18 states have (on average 17.555555555555557) internal successors, (316), 18 states have internal predecessors, (316), 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) [2024-10-13 16:52:48,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:48,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:52:48,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:50,591 INFO L124 PetriNetUnfolderBase]: 3654/8305 cut-off events. [2024-10-13 16:52:50,591 INFO L125 PetriNetUnfolderBase]: For 126596/126596 co-relation queries the response was YES. [2024-10-13 16:52:50,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34533 conditions, 8305 events. 3654/8305 cut-off events. For 126596/126596 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 73848 event pairs, 389 based on Foata normal form. 1296/9555 useless extension candidates. Maximal degree in co-relation 34467. Up to 1273 conditions per place. [2024-10-13 16:52:50,654 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 75 selfloop transitions, 64 changer transitions 162/315 dead transitions. [2024-10-13 16:52:50,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 315 transitions, 3641 flow [2024-10-13 16:52:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 16:52:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 16:52:50,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 473 transitions. [2024-10-13 16:52:50,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47922998986828774 [2024-10-13 16:52:50,655 INFO L175 Difference]: Start difference. First operand has 219 places, 304 transitions, 3986 flow. Second operand 21 states and 473 transitions. [2024-10-13 16:52:50,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 315 transitions, 3641 flow [2024-10-13 16:52:50,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 315 transitions, 3176 flow, removed 83 selfloop flow, removed 42 redundant places. [2024-10-13 16:52:50,861 INFO L231 Difference]: Finished difference. Result has 198 places, 129 transitions, 1521 flow [2024-10-13 16:52:50,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1521, PETRI_PLACES=198, PETRI_TRANSITIONS=129} [2024-10-13 16:52:50,862 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 151 predicate places. [2024-10-13 16:52:50,862 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 129 transitions, 1521 flow [2024-10-13 16:52:50,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.555555555555557) internal successors, (316), 18 states have internal predecessors, (316), 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) [2024-10-13 16:52:50,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:50,862 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:50,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-13 16:52:51,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:51,063 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:52:51,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:51,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1267789669, now seen corresponding path program 5 times [2024-10-13 16:52:51,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:51,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149169869] [2024-10-13 16:52:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:51,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:52,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:52,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149169869] [2024-10-13 16:52:52,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149169869] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:52,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529972139] [2024-10-13 16:52:52,079 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 16:52:52,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:52,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:52,080 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:52:52,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 16:52:52,163 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-13 16:52:52,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:52:52,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-13 16:52:52,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:52,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-13 16:52:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:52,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:54,041 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 115 treesize of output 103 [2024-10-13 16:52:54,116 INFO L349 Elim1Store]: treesize reduction 18, result has 82.5 percent of original size [2024-10-13 16:52:54,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 302 treesize of output 287 [2024-10-13 16:52:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:58,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529972139] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:52:58,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:52:58,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 44 [2024-10-13 16:52:58,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788317316] [2024-10-13 16:52:58,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:52:58,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-10-13 16:52:58,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:58,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-10-13 16:52:58,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1800, Unknown=0, NotChecked=0, Total=2070 [2024-10-13 16:52:59,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:52:59,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 129 transitions, 1521 flow. Second operand has 46 states, 46 states have (on average 16.369565217391305) internal successors, (753), 46 states have internal predecessors, (753), 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) [2024-10-13 16:52:59,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:59,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:52:59,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:53:05,478 INFO L124 PetriNetUnfolderBase]: 5861/11810 cut-off events. [2024-10-13 16:53:05,478 INFO L125 PetriNetUnfolderBase]: For 182632/182632 co-relation queries the response was YES. [2024-10-13 16:53:05,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59718 conditions, 11810 events. 5861/11810 cut-off events. For 182632/182632 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 101225 event pairs, 358 based on Foata normal form. 348/12141 useless extension candidates. Maximal degree in co-relation 59665. Up to 3379 conditions per place. [2024-10-13 16:53:05,625 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 414 selfloop transitions, 218 changer transitions 16/662 dead transitions. [2024-10-13 16:53:05,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 662 transitions, 7527 flow [2024-10-13 16:53:05,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-10-13 16:53:05,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-10-13 16:53:05,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 1563 transitions. [2024-10-13 16:53:05,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47507598784194527 [2024-10-13 16:53:05,629 INFO L175 Difference]: Start difference. First operand has 198 places, 129 transitions, 1521 flow. Second operand 70 states and 1563 transitions. [2024-10-13 16:53:05,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 662 transitions, 7527 flow [2024-10-13 16:53:06,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 662 transitions, 6873 flow, removed 297 selfloop flow, removed 22 redundant places. [2024-10-13 16:53:06,209 INFO L231 Difference]: Finished difference. Result has 233 places, 316 transitions, 5207 flow [2024-10-13 16:53:06,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=5207, PETRI_PLACES=233, PETRI_TRANSITIONS=316} [2024-10-13 16:53:06,209 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 186 predicate places. [2024-10-13 16:53:06,210 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 316 transitions, 5207 flow [2024-10-13 16:53:06,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 16.369565217391305) internal successors, (753), 46 states have internal predecessors, (753), 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) [2024-10-13 16:53:06,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:53:06,210 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:53:06,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-13 16:53:06,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 16:53:06,411 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:53:06,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:53:06,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1331895836, now seen corresponding path program 3 times [2024-10-13 16:53:06,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:53:06,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183934759] [2024-10-13 16:53:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:53:06,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:53:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:53:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:53:07,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:53:07,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183934759] [2024-10-13 16:53:07,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183934759] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:53:07,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188534946] [2024-10-13 16:53:07,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:53:07,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:53:07,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:53:07,148 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:53:07,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 16:53:07,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-13 16:53:07,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:53:07,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 16:53:07,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:53:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-13 16:53:07,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:53:07,417 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-13 16:53:07,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-10-13 16:53:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:53:07,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188534946] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:53:07,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:53:07,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 4, 6] total 24 [2024-10-13 16:53:07,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462692644] [2024-10-13 16:53:07,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:53:07,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 16:53:07,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:53:07,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 16:53:07,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2024-10-13 16:53:07,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:53:07,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 316 transitions, 5207 flow. Second operand has 26 states, 26 states have (on average 17.076923076923077) internal successors, (444), 26 states have internal predecessors, (444), 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) [2024-10-13 16:53:07,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:53:07,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:53:07,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:53:10,588 INFO L124 PetriNetUnfolderBase]: 5951/11910 cut-off events. [2024-10-13 16:53:10,588 INFO L125 PetriNetUnfolderBase]: For 366119/366119 co-relation queries the response was YES. [2024-10-13 16:53:10,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80210 conditions, 11910 events. 5951/11910 cut-off events. For 366119/366119 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 101322 event pairs, 376 based on Foata normal form. 96/11987 useless extension candidates. Maximal degree in co-relation 80131. Up to 5569 conditions per place. [2024-10-13 16:53:10,714 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 334 selfloop transitions, 64 changer transitions 8/420 dead transitions. [2024-10-13 16:53:10,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 420 transitions, 7092 flow [2024-10-13 16:53:10,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 16:53:10,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 16:53:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 488 transitions. [2024-10-13 16:53:10,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4514338575393155 [2024-10-13 16:53:10,716 INFO L175 Difference]: Start difference. First operand has 233 places, 316 transitions, 5207 flow. Second operand 23 states and 488 transitions. [2024-10-13 16:53:10,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 420 transitions, 7092 flow [2024-10-13 16:53:11,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 420 transitions, 5913 flow, removed 563 selfloop flow, removed 17 redundant places. [2024-10-13 16:53:11,570 INFO L231 Difference]: Finished difference. Result has 241 places, 317 transitions, 4351 flow [2024-10-13 16:53:11,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4020, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4351, PETRI_PLACES=241, PETRI_TRANSITIONS=317} [2024-10-13 16:53:11,571 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 194 predicate places. [2024-10-13 16:53:11,571 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 317 transitions, 4351 flow [2024-10-13 16:53:11,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.076923076923077) internal successors, (444), 26 states have internal predecessors, (444), 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) [2024-10-13 16:53:11,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:53:11,571 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:53:11,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-13 16:53:11,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:53:11,772 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:53:11,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:53:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1843363683, now seen corresponding path program 6 times [2024-10-13 16:53:11,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:53:11,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945707215] [2024-10-13 16:53:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:53:11,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:53:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:53:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:53:12,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:53:12,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945707215] [2024-10-13 16:53:12,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945707215] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:53:12,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945477982] [2024-10-13 16:53:12,520 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 16:53:12,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:53:12,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:53:12,522 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:53:12,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 16:53:12,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-13 16:53:12,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:53:12,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-13 16:53:12,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:53:12,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-13 16:53:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:53:13,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:53:14,175 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 115 treesize of output 103 [2024-10-13 16:53:14,247 INFO L349 Elim1Store]: treesize reduction 46, result has 55.3 percent of original size [2024-10-13 16:53:14,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 302 treesize of output 259 [2024-10-13 16:53:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:53:15,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945477982] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:53:15,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:53:15,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2024-10-13 16:53:15,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797037713] [2024-10-13 16:53:15,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:53:15,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-13 16:53:15,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:53:15,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-13 16:53:15,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1645, Unknown=0, NotChecked=0, Total=1892 [2024-10-13 16:53:15,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:53:15,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 317 transitions, 4351 flow. Second operand has 44 states, 44 states have (on average 16.431818181818183) internal successors, (723), 44 states have internal predecessors, (723), 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) [2024-10-13 16:53:15,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:53:15,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:53:15,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:53:20,133 INFO L124 PetriNetUnfolderBase]: 8297/16548 cut-off events. [2024-10-13 16:53:20,133 INFO L125 PetriNetUnfolderBase]: For 623874/623874 co-relation queries the response was YES. [2024-10-13 16:53:20,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108126 conditions, 16548 events. 8297/16548 cut-off events. For 623874/623874 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 144414 event pairs, 568 based on Foata normal form. 720/17249 useless extension candidates. Maximal degree in co-relation 108044. Up to 4075 conditions per place. [2024-10-13 16:53:20,345 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 304 selfloop transitions, 276 changer transitions 25/619 dead transitions. [2024-10-13 16:53:20,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 619 transitions, 9514 flow [2024-10-13 16:53:20,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-13 16:53:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-10-13 16:53:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 824 transitions. [2024-10-13 16:53:20,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46136618141097424 [2024-10-13 16:53:20,347 INFO L175 Difference]: Start difference. First operand has 241 places, 317 transitions, 4351 flow. Second operand 38 states and 824 transitions. [2024-10-13 16:53:20,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 619 transitions, 9514 flow [2024-10-13 16:53:21,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 619 transitions, 9132 flow, removed 119 selfloop flow, removed 19 redundant places. [2024-10-13 16:53:21,615 INFO L231 Difference]: Finished difference. Result has 271 places, 431 transitions, 7594 flow [2024-10-13 16:53:21,615 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3963, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7594, PETRI_PLACES=271, PETRI_TRANSITIONS=431} [2024-10-13 16:53:21,616 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 224 predicate places. [2024-10-13 16:53:21,616 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 431 transitions, 7594 flow [2024-10-13 16:53:21,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 16.431818181818183) internal successors, (723), 44 states have internal predecessors, (723), 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) [2024-10-13 16:53:21,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:53:21,616 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:53:21,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-13 16:53:21,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:53:21,817 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:53:21,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:53:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash -386840604, now seen corresponding path program 4 times [2024-10-13 16:53:21,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:53:21,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187855484] [2024-10-13 16:53:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:53:21,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:53:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:53:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:53:22,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:53:22,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187855484] [2024-10-13 16:53:22,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187855484] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:53:22,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026351718] [2024-10-13 16:53:22,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 16:53:22,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:53:22,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:53:22,547 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:53:22,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-13 16:53:22,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 16:53:22,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:53:22,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-13 16:53:22,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:53:22,837 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 16:53:22,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:53:22,893 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-13 16:53:22,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-10-13 16:53:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-13 16:53:22,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026351718] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:53:22,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:53:22,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 4] total 25 [2024-10-13 16:53:22,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605272747] [2024-10-13 16:53:22,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:53:22,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-13 16:53:22,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:53:22,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-13 16:53:22,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2024-10-13 16:53:23,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:53:23,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 431 transitions, 7594 flow. Second operand has 27 states, 27 states have (on average 16.666666666666668) internal successors, (450), 27 states have internal predecessors, (450), 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) [2024-10-13 16:53:23,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:53:23,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:53:23,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand