./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-prod-cons.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 7225a3dc80a635bdf8bc0a0aebf3fff6c385d87e3635c30eb2fdc2ad9b10efb0 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:47:38,608 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:47:38,649 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:47:38,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:47:38,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:47:38,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:47:38,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:47:38,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:47:38,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:47:38,684 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:47:38,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:47:38,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:47:38,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:47:38,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:47:38,687 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:47:38,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:47:38,688 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:47:38,688 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:47:38,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:47:38,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:47:38,689 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:47:38,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:47:38,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:47:38,692 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:47:38,692 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:47:38,692 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:47:38,692 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:47:38,693 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:47:38,693 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:47:38,693 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:47:38,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:47:38,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:47:38,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:47:38,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:47:38,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:47:38,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:47:38,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:47:38,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:47:38,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:47:38,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:47:38,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:47:38,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:47:38,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:47:38,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:47:38,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7225a3dc80a635bdf8bc0a0aebf3fff6c385d87e3635c30eb2fdc2ad9b10efb0 [2024-11-12 20:47:38,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:47:38,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:47:38,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:47:38,927 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:47:38,928 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:47:38,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2024-11-12 20:47:40,262 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:47:40,430 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:47:40,431 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2024-11-12 20:47:40,442 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/242f1823a/6f2dfda2e57f4880832b2b2699e3d91e/FLAG2fd9c21bf [2024-11-12 20:47:40,459 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/242f1823a/6f2dfda2e57f4880832b2b2699e3d91e [2024-11-12 20:47:40,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:47:40,464 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:47:40,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:47:40,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:47:40,472 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:47:40,473 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:47:40" (1/1) ... [2024-11-12 20:47:40,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fafead1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40, skipping insertion in model container [2024-11-12 20:47:40,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:47:40" (1/1) ... [2024-11-12 20:47:40,503 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:47:40,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:47:40,746 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:47:40,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:47:40,804 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:47:40,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40 WrapperNode [2024-11-12 20:47:40,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:47:40,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:47:40,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:47:40,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:47:40,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40" (1/1) ... [2024-11-12 20:47:40,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40" (1/1) ... [2024-11-12 20:47:40,856 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 168 [2024-11-12 20:47:40,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:47:40,858 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:47:40,859 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:47:40,859 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:47:40,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40" (1/1) ... [2024-11-12 20:47:40,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40" (1/1) ... [2024-11-12 20:47:40,874 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40" (1/1) ... [2024-11-12 20:47:40,908 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-12 20:47:40,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40" (1/1) ... [2024-11-12 20:47:40,909 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40" (1/1) ... [2024-11-12 20:47:40,919 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40" (1/1) ... [2024-11-12 20:47:40,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40" (1/1) ... [2024-11-12 20:47:40,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40" (1/1) ... [2024-11-12 20:47:40,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40" (1/1) ... [2024-11-12 20:47:40,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:47:40,936 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:47:40,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:47:40,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:47:40,940 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40" (1/1) ... [2024-11-12 20:47:40,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:47:40,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:40,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 20:47:40,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 20:47:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:47:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:47:41,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:47:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:47:41,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:47:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 20:47:41,023 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 20:47:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:47:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:47:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:47:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:47:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 20:47:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 20:47:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 20:47:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:47:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:47:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:47:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:47:41,026 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:47:41,135 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:47:41,138 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:47:41,502 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:47:41,503 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:47:41,686 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:47:41,686 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-12 20:47:41,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:47:41 BoogieIcfgContainer [2024-11-12 20:47:41,687 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:47:41,689 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:47:41,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:47:41,692 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:47:41,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:47:40" (1/3) ... [2024-11-12 20:47:41,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5387b19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:47:41, skipping insertion in model container [2024-11-12 20:47:41,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:40" (2/3) ... [2024-11-12 20:47:41,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5387b19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:47:41, skipping insertion in model container [2024-11-12 20:47:41,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:47:41" (3/3) ... [2024-11-12 20:47:41,697 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2024-11-12 20:47:41,713 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:47:41,713 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-12 20:47:41,713 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:47:41,778 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 20:47:41,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 119 flow [2024-11-12 20:47:41,838 INFO L124 PetriNetUnfolderBase]: 4/46 cut-off events. [2024-11-12 20:47:41,838 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 20:47:41,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 4/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 126 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-11-12 20:47:41,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 49 transitions, 119 flow [2024-11-12 20:47:41,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 43 transitions, 98 flow [2024-11-12 20:47:41,864 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:47:41,870 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;@5fc60fb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:47:41,870 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-12 20:47:41,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:47:41,874 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:47:41,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:47:41,874 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:41,875 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:47:41,876 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:41,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:41,881 INFO L85 PathProgramCache]: Analyzing trace with hash 500006, now seen corresponding path program 1 times [2024-11-12 20:47:41,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:41,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447771542] [2024-11-12 20:47:41,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:41,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:42,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:42,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:42,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447771542] [2024-11-12 20:47:42,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447771542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:42,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:42,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:42,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162619099] [2024-11-12 20:47:42,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:42,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:42,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:42,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:42,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-12 20:47:42,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:42,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:42,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-12 20:47:42,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:42,382 INFO L124 PetriNetUnfolderBase]: 777/1391 cut-off events. [2024-11-12 20:47:42,382 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-12 20:47:42,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 1391 events. 777/1391 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8374 event pairs, 617 based on Foata normal form. 1/1063 useless extension candidates. Maximal degree in co-relation 2550. Up to 1131 conditions per place. [2024-11-12 20:47:42,403 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 23 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-11-12 20:47:42,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 146 flow [2024-11-12 20:47:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:42,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-12 20:47:42,438 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-11-12 20:47:42,439 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 98 flow. Second operand 4 states and 94 transitions. [2024-11-12 20:47:42,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 146 flow [2024-11-12 20:47:42,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 140 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:47:42,448 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 94 flow [2024-11-12 20:47:42,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-11-12 20:47:42,458 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-11-12 20:47:42,458 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 94 flow [2024-11-12 20:47:42,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:42,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:42,459 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-12 20:47:42,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:47:42,463 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:42,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:42,466 INFO L85 PathProgramCache]: Analyzing trace with hash 15500688, now seen corresponding path program 1 times [2024-11-12 20:47:42,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:42,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703117216] [2024-11-12 20:47:42,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:42,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:42,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:42,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703117216] [2024-11-12 20:47:42,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703117216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:42,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:42,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:42,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363498751] [2024-11-12 20:47:42,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:42,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:42,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:42,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:42,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:42,608 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-12 20:47:42,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:42,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:42,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-12 20:47:42,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:42,768 INFO L124 PetriNetUnfolderBase]: 778/1395 cut-off events. [2024-11-12 20:47:42,769 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-12 20:47:42,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 1395 events. 778/1395 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8401 event pairs, 617 based on Foata normal form. 1/1067 useless extension candidates. Maximal degree in co-relation 2641. Up to 1136 conditions per place. [2024-11-12 20:47:42,778 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 26 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-11-12 20:47:42,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 166 flow [2024-11-12 20:47:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:42,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:42,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-11-12 20:47:42,781 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4846938775510204 [2024-11-12 20:47:42,781 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 94 flow. Second operand 4 states and 95 transitions. [2024-11-12 20:47:42,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 166 flow [2024-11-12 20:47:42,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:47:42,784 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 113 flow [2024-11-12 20:47:42,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, 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=113, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-11-12 20:47:42,786 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2024-11-12 20:47:42,786 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 113 flow [2024-11-12 20:47:42,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:42,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:42,787 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:47:42,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:47:42,787 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:42,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2074985736, now seen corresponding path program 1 times [2024-11-12 20:47:42,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:42,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809686070] [2024-11-12 20:47:42,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:42,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:42,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:42,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809686070] [2024-11-12 20:47:42,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809686070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:42,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287897481] [2024-11-12 20:47:42,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:42,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:42,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:42,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:42,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:47:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:42,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:47:42,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:42,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:43,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:43,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287897481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:43,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:43,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-12 20:47:43,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977325311] [2024-11-12 20:47:43,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:43,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:47:43,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:43,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:47:43,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:47:43,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-12 20:47:43,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 113 flow. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:43,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:43,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-12 20:47:43,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:43,260 INFO L124 PetriNetUnfolderBase]: 781/1407 cut-off events. [2024-11-12 20:47:43,260 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-12 20:47:43,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 1407 events. 781/1407 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8527 event pairs, 617 based on Foata normal form. 0/1075 useless extension candidates. Maximal degree in co-relation 2648. Up to 1139 conditions per place. [2024-11-12 20:47:43,266 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 26 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-11-12 20:47:43,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 227 flow [2024-11-12 20:47:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:47:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:47:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-11-12 20:47:43,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4122448979591837 [2024-11-12 20:47:43,271 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 113 flow. Second operand 10 states and 202 transitions. [2024-11-12 20:47:43,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 227 flow [2024-11-12 20:47:43,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:43,273 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 190 flow [2024-11-12 20:47:43,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=190, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-11-12 20:47:43,274 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-11-12 20:47:43,274 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 190 flow [2024-11-12 20:47:43,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:43,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:43,275 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:43,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:47:43,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:43,476 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:43,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:43,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1441425958, now seen corresponding path program 1 times [2024-11-12 20:47:43,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:43,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15311715] [2024-11-12 20:47:43,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:43,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:43,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:43,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15311715] [2024-11-12 20:47:43,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15311715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:43,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:43,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:43,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313648525] [2024-11-12 20:47:43,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:43,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:43,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:43,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:43,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:43,581 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-12 20:47:43,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:43,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:43,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-12 20:47:43,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:43,742 INFO L124 PetriNetUnfolderBase]: 897/1653 cut-off events. [2024-11-12 20:47:43,742 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-12 20:47:43,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 1653 events. 897/1653 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10024 event pairs, 733 based on Foata normal form. 34/1357 useless extension candidates. Maximal degree in co-relation 3172. Up to 1143 conditions per place. [2024-11-12 20:47:43,752 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 35 selfloop transitions, 2 changer transitions 14/65 dead transitions. [2024-11-12 20:47:43,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 65 transitions, 324 flow [2024-11-12 20:47:43,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:43,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:43,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-11-12 20:47:43,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-11-12 20:47:43,754 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 190 flow. Second operand 4 states and 118 transitions. [2024-11-12 20:47:43,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 65 transitions, 324 flow [2024-11-12 20:47:43,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 294 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-12 20:47:43,758 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 168 flow [2024-11-12 20:47:43,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-11-12 20:47:43,758 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2024-11-12 20:47:43,759 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 168 flow [2024-11-12 20:47:43,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:43,759 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:43,759 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:43,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:47:43,759 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:43,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:43,761 INFO L85 PathProgramCache]: Analyzing trace with hash -279816382, now seen corresponding path program 1 times [2024-11-12 20:47:43,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:43,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641539134] [2024-11-12 20:47:43,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:43,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:43,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:43,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641539134] [2024-11-12 20:47:43,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641539134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:43,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815640963] [2024-11-12 20:47:43,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:43,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:43,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:43,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:43,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:47:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:43,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:47:43,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:43,958 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:47:43,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815640963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:43,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:47:43,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-12 20:47:43,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812251541] [2024-11-12 20:47:43,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:43,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:43,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:43,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:43,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:47:43,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-12 20:47:43,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:43,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:43,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-12 20:47:43,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:44,064 INFO L124 PetriNetUnfolderBase]: 571/1059 cut-off events. [2024-11-12 20:47:44,065 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2024-11-12 20:47:44,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2150 conditions, 1059 events. 571/1059 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5848 event pairs, 456 based on Foata normal form. 0/892 useless extension candidates. Maximal degree in co-relation 2128. Up to 849 conditions per place. [2024-11-12 20:47:44,072 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 34 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2024-11-12 20:47:44,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 230 flow [2024-11-12 20:47:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:44,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-12 20:47:44,074 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-11-12 20:47:44,074 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 168 flow. Second operand 3 states and 80 transitions. [2024-11-12 20:47:44,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 230 flow [2024-11-12 20:47:44,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 49 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:47:44,076 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 158 flow [2024-11-12 20:47:44,077 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-11-12 20:47:44,078 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2024-11-12 20:47:44,078 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 158 flow [2024-11-12 20:47:44,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:44,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:44,079 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:44,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 20:47:44,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:44,281 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:44,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:44,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1679413092, now seen corresponding path program 1 times [2024-11-12 20:47:44,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:44,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354144911] [2024-11-12 20:47:44,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:44,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:44,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:44,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354144911] [2024-11-12 20:47:44,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354144911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:44,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:44,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:47:44,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162732252] [2024-11-12 20:47:44,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:44,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:44,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:44,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:44,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:44,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-12 20:47:44,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:44,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:44,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-12 20:47:44,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:44,489 INFO L124 PetriNetUnfolderBase]: 784/1423 cut-off events. [2024-11-12 20:47:44,489 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-12 20:47:44,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2867 conditions, 1423 events. 784/1423 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8177 event pairs, 296 based on Foata normal form. 44/1184 useless extension candidates. Maximal degree in co-relation 2854. Up to 626 conditions per place. [2024-11-12 20:47:44,496 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 58 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2024-11-12 20:47:44,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 342 flow [2024-11-12 20:47:44,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:44,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-12 20:47:44,498 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-12 20:47:44,498 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 158 flow. Second operand 4 states and 112 transitions. [2024-11-12 20:47:44,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 342 flow [2024-11-12 20:47:44,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 341 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:44,500 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 170 flow [2024-11-12 20:47:44,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-11-12 20:47:44,500 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-11-12 20:47:44,501 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 170 flow [2024-11-12 20:47:44,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:44,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:44,501 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:44,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:47:44,501 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:44,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1295344994, now seen corresponding path program 1 times [2024-11-12 20:47:44,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:44,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503674353] [2024-11-12 20:47:44,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:44,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:44,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:44,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:44,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503674353] [2024-11-12 20:47:44,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503674353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:44,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:44,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:44,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868244331] [2024-11-12 20:47:44,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:44,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:44,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:44,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:44,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:47:44,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-12 20:47:44,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:44,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:44,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-12 20:47:44,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:44,696 INFO L124 PetriNetUnfolderBase]: 687/1260 cut-off events. [2024-11-12 20:47:44,696 INFO L125 PetriNetUnfolderBase]: For 332/363 co-relation queries the response was YES. [2024-11-12 20:47:44,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 1260 events. 687/1260 cut-off events. For 332/363 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6780 event pairs, 220 based on Foata normal form. 49/1183 useless extension candidates. Maximal degree in co-relation 2887. Up to 782 conditions per place. [2024-11-12 20:47:44,705 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 43 selfloop transitions, 2 changer transitions 4/62 dead transitions. [2024-11-12 20:47:44,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 306 flow [2024-11-12 20:47:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:44,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-12 20:47:44,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-12 20:47:44,707 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 170 flow. Second operand 3 states and 91 transitions. [2024-11-12 20:47:44,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 306 flow [2024-11-12 20:47:44,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 300 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:47:44,712 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 179 flow [2024-11-12 20:47:44,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-11-12 20:47:44,714 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2024-11-12 20:47:44,714 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 179 flow [2024-11-12 20:47:44,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:44,715 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:44,715 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:44,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:47:44,715 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:44,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:44,716 INFO L85 PathProgramCache]: Analyzing trace with hash 522198821, now seen corresponding path program 1 times [2024-11-12 20:47:44,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:44,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240928306] [2024-11-12 20:47:44,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:44,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:44,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:44,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240928306] [2024-11-12 20:47:44,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240928306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:44,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:44,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:47:44,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312671656] [2024-11-12 20:47:44,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:44,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:47:44,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:44,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:47:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:47:44,787 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-12 20:47:44,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:44,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:44,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-12 20:47:44,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:44,970 INFO L124 PetriNetUnfolderBase]: 687/1302 cut-off events. [2024-11-12 20:47:44,970 INFO L125 PetriNetUnfolderBase]: For 473/497 co-relation queries the response was YES. [2024-11-12 20:47:44,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2958 conditions, 1302 events. 687/1302 cut-off events. For 473/497 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7378 event pairs, 167 based on Foata normal form. 24/1196 useless extension candidates. Maximal degree in co-relation 2942. Up to 532 conditions per place. [2024-11-12 20:47:44,976 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 52 selfloop transitions, 6 changer transitions 3/73 dead transitions. [2024-11-12 20:47:44,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 73 transitions, 363 flow [2024-11-12 20:47:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:47:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:47:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-12 20:47:44,978 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-11-12 20:47:44,978 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 179 flow. Second operand 5 states and 129 transitions. [2024-11-12 20:47:44,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 73 transitions, 363 flow [2024-11-12 20:47:44,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 351 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-12 20:47:44,981 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 179 flow [2024-11-12 20:47:44,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2024-11-12 20:47:44,982 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2024-11-12 20:47:44,982 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 179 flow [2024-11-12 20:47:44,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:44,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:44,982 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-12 20:47:44,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 20:47:44,983 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:44,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:44,983 INFO L85 PathProgramCache]: Analyzing trace with hash -278817904, now seen corresponding path program 2 times [2024-11-12 20:47:44,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:44,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007448898] [2024-11-12 20:47:44,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:44,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:45,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:45,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007448898] [2024-11-12 20:47:45,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007448898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:45,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032093909] [2024-11-12 20:47:45,114 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:47:45,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:45,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:45,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:45,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:47:45,170 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:47:45,170 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:47:45,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 20:47:45,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:47:45,212 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:47:45,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032093909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:45,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:45,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-12 20:47:45,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232418084] [2024-11-12 20:47:45,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:45,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 20:47:45,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:45,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 20:47:45,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-12 20:47:45,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-12 20:47:45,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 179 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:45,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:45,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-12 20:47:45,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:45,497 INFO L124 PetriNetUnfolderBase]: 530/1017 cut-off events. [2024-11-12 20:47:45,498 INFO L125 PetriNetUnfolderBase]: For 591/598 co-relation queries the response was YES. [2024-11-12 20:47:45,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 1017 events. 530/1017 cut-off events. For 591/598 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5372 event pairs, 403 based on Foata normal form. 9/870 useless extension candidates. Maximal degree in co-relation 2408. Up to 791 conditions per place. [2024-11-12 20:47:45,504 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 21 selfloop transitions, 18 changer transitions 0/50 dead transitions. [2024-11-12 20:47:45,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 50 transitions, 261 flow [2024-11-12 20:47:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:47:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:47:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 263 transitions. [2024-11-12 20:47:45,506 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38338192419825073 [2024-11-12 20:47:45,506 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 179 flow. Second operand 14 states and 263 transitions. [2024-11-12 20:47:45,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 50 transitions, 261 flow [2024-11-12 20:47:45,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 50 transitions, 237 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-11-12 20:47:45,509 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 195 flow [2024-11-12 20:47:45,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=195, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2024-11-12 20:47:45,509 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2024-11-12 20:47:45,510 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 195 flow [2024-11-12 20:47:45,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:45,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:45,510 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:45,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 20:47:45,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:45,711 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:45,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:45,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1746797091, now seen corresponding path program 1 times [2024-11-12 20:47:45,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:45,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530174429] [2024-11-12 20:47:45,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:45,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:46,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:46,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530174429] [2024-11-12 20:47:46,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530174429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:46,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965237758] [2024-11-12 20:47:46,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:46,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:46,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:46,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:46,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:47:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:46,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-12 20:47:46,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:46,213 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 [2024-11-12 20:47:46,540 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 15 treesize of output 7 [2024-11-12 20:47:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:46,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:46,904 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 20 treesize of output 18 [2024-11-12 20:47:46,911 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 26 treesize of output 20 [2024-11-12 20:47:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:46,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965237758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:46,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:46,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-12 20:47:46,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789813898] [2024-11-12 20:47:46,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:46,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-12 20:47:46,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:46,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-12 20:47:46,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-11-12 20:47:47,139 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-12 20:47:47,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 195 flow. Second operand has 20 states, 20 states have (on average 17.8) internal successors, (356), 20 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:47,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:47,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-12 20:47:47,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:48,386 INFO L124 PetriNetUnfolderBase]: 1403/2630 cut-off events. [2024-11-12 20:47:48,387 INFO L125 PetriNetUnfolderBase]: For 599/672 co-relation queries the response was YES. [2024-11-12 20:47:48,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5786 conditions, 2630 events. 1403/2630 cut-off events. For 599/672 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16214 event pairs, 331 based on Foata normal form. 73/2498 useless extension candidates. Maximal degree in co-relation 5774. Up to 756 conditions per place. [2024-11-12 20:47:48,399 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 114 selfloop transitions, 25 changer transitions 8/158 dead transitions. [2024-11-12 20:47:48,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 158 transitions, 807 flow [2024-11-12 20:47:48,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 20:47:48,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 20:47:48,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 375 transitions. [2024-11-12 20:47:48,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-11-12 20:47:48,401 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 195 flow. Second operand 15 states and 375 transitions. [2024-11-12 20:47:48,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 158 transitions, 807 flow [2024-11-12 20:47:48,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 158 transitions, 747 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-11-12 20:47:48,406 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 263 flow [2024-11-12 20:47:48,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=263, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2024-11-12 20:47:48,407 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 21 predicate places. [2024-11-12 20:47:48,408 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 263 flow [2024-11-12 20:47:48,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 17.8) internal successors, (356), 20 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:48,408 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:48,408 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:48,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 20:47:48,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:48,609 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:48,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:48,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2124995856, now seen corresponding path program 1 times [2024-11-12 20:47:48,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:48,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320014007] [2024-11-12 20:47:48,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:48,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:49,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:49,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320014007] [2024-11-12 20:47:49,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320014007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:49,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91930538] [2024-11-12 20:47:49,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:49,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:49,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:49,158 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:49,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 20:47:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:49,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 20:47:49,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:49,339 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:49,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:47:49,388 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 19 [2024-11-12 20:47:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 20:47:49,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91930538] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:49,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 20:47:49,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 16 [2024-11-12 20:47:49,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569769399] [2024-11-12 20:47:49,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:49,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:47:49,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:49,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:47:49,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-12 20:47:49,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-12 20:47:49,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:49,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:49,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-12 20:47:49,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:49,726 INFO L124 PetriNetUnfolderBase]: 1573/2888 cut-off events. [2024-11-12 20:47:49,726 INFO L125 PetriNetUnfolderBase]: For 1950/2031 co-relation queries the response was YES. [2024-11-12 20:47:49,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7392 conditions, 2888 events. 1573/2888 cut-off events. For 1950/2031 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 17523 event pairs, 213 based on Foata normal form. 145/2933 useless extension candidates. Maximal degree in co-relation 7378. Up to 767 conditions per place. [2024-11-12 20:47:49,745 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 71 selfloop transitions, 12 changer transitions 4/98 dead transitions. [2024-11-12 20:47:49,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 98 transitions, 562 flow [2024-11-12 20:47:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:47:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:47:49,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-11-12 20:47:49,747 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6040816326530613 [2024-11-12 20:47:49,747 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 263 flow. Second operand 5 states and 148 transitions. [2024-11-12 20:47:49,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 98 transitions, 562 flow [2024-11-12 20:47:49,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 98 transitions, 542 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-12 20:47:49,759 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 323 flow [2024-11-12 20:47:49,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2024-11-12 20:47:49,759 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 23 predicate places. [2024-11-12 20:47:49,760 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 323 flow [2024-11-12 20:47:49,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:49,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:49,760 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:49,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 20:47:49,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-12 20:47:49,962 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:49,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1100904540, now seen corresponding path program 1 times [2024-11-12 20:47:49,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:49,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046927012] [2024-11-12 20:47:49,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:49,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:50,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:50,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046927012] [2024-11-12 20:47:50,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046927012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:50,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451903674] [2024-11-12 20:47:50,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:50,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:50,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:50,073 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:50,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 20:47:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:50,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:47:50,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:50,179 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:47:50,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451903674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:50,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:47:50,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-12 20:47:50,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706888884] [2024-11-12 20:47:50,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:50,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:50,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:50,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:50,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:47:50,180 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-12 20:47:50,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:50,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:50,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-12 20:47:50,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:50,588 INFO L124 PetriNetUnfolderBase]: 3398/6173 cut-off events. [2024-11-12 20:47:50,589 INFO L125 PetriNetUnfolderBase]: For 10188/10323 co-relation queries the response was YES. [2024-11-12 20:47:50,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17919 conditions, 6173 events. 3398/6173 cut-off events. For 10188/10323 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 42084 event pairs, 808 based on Foata normal form. 199/6153 useless extension candidates. Maximal degree in co-relation 17901. Up to 1950 conditions per place. [2024-11-12 20:47:50,621 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 94 selfloop transitions, 13 changer transitions 0/118 dead transitions. [2024-11-12 20:47:50,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 118 transitions, 847 flow [2024-11-12 20:47:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:50,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-12 20:47:50,623 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6581632653061225 [2024-11-12 20:47:50,623 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 323 flow. Second operand 4 states and 129 transitions. [2024-11-12 20:47:50,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 118 transitions, 847 flow [2024-11-12 20:47:50,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 831 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:50,646 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 458 flow [2024-11-12 20:47:50,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=458, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2024-11-12 20:47:50,647 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 27 predicate places. [2024-11-12 20:47:50,647 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 458 flow [2024-11-12 20:47:50,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:50,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:50,647 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:50,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 20:47:50,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:50,848 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:50,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:50,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1844992855, now seen corresponding path program 2 times [2024-11-12 20:47:50,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:50,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626353467] [2024-11-12 20:47:50,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:50,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:51,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:51,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626353467] [2024-11-12 20:47:51,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626353467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:51,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587019356] [2024-11-12 20:47:51,496 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:47:51,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:51,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:51,498 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:51,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 20:47:51,557 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:47:51,557 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:47:51,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 20:47:51,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 20:47:51,654 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:47:51,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587019356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:51,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:47:51,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 13 [2024-11-12 20:47:51,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487794463] [2024-11-12 20:47:51,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:51,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:47:51,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:51,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:47:51,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-12 20:47:51,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-12 20:47:51,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 458 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:51,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:51,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-12 20:47:51,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:52,052 INFO L124 PetriNetUnfolderBase]: 3302/6081 cut-off events. [2024-11-12 20:47:52,052 INFO L125 PetriNetUnfolderBase]: For 11990/12143 co-relation queries the response was YES. [2024-11-12 20:47:52,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18278 conditions, 6081 events. 3302/6081 cut-off events. For 11990/12143 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 41742 event pairs, 355 based on Foata normal form. 231/6109 useless extension candidates. Maximal degree in co-relation 18257. Up to 2373 conditions per place. [2024-11-12 20:47:52,090 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 80 selfloop transitions, 14 changer transitions 4/109 dead transitions. [2024-11-12 20:47:52,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 777 flow [2024-11-12 20:47:52,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:47:52,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:47:52,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-11-12 20:47:52,094 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-12 20:47:52,094 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 458 flow. Second operand 5 states and 147 transitions. [2024-11-12 20:47:52,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 777 flow [2024-11-12 20:47:52,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 109 transitions, 750 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-12 20:47:52,128 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 453 flow [2024-11-12 20:47:52,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2024-11-12 20:47:52,128 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 29 predicate places. [2024-11-12 20:47:52,128 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 453 flow [2024-11-12 20:47:52,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:52,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:52,129 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:52,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 20:47:52,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:52,330 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:52,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash 621955739, now seen corresponding path program 1 times [2024-11-12 20:47:52,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:52,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256856655] [2024-11-12 20:47:52,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:52,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:52,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:52,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:52,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256856655] [2024-11-12 20:47:52,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256856655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:52,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640421161] [2024-11-12 20:47:52,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:52,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:52,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:52,448 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:52,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 20:47:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:52,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 20:47:52,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:52,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:47:52,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640421161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:52,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:52,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-12 20:47:52,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698053153] [2024-11-12 20:47:52,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:52,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 20:47:52,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:52,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 20:47:52,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-12 20:47:52,720 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-12 20:47:52,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 453 flow. Second operand has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:52,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:52,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-12 20:47:52,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:53,111 INFO L124 PetriNetUnfolderBase]: 2340/4441 cut-off events. [2024-11-12 20:47:53,111 INFO L125 PetriNetUnfolderBase]: For 9110/9225 co-relation queries the response was YES. [2024-11-12 20:47:53,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13024 conditions, 4441 events. 2340/4441 cut-off events. For 9110/9225 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 29410 event pairs, 1647 based on Foata normal form. 119/4344 useless extension candidates. Maximal degree in co-relation 13003. Up to 3010 conditions per place. [2024-11-12 20:47:53,139 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 36 selfloop transitions, 12 changer transitions 30/89 dead transitions. [2024-11-12 20:47:53,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 89 transitions, 586 flow [2024-11-12 20:47:53,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 20:47:53,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 20:47:53,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-11-12 20:47:53,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-11-12 20:47:53,141 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 453 flow. Second operand 8 states and 184 transitions. [2024-11-12 20:47:53,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 89 transitions, 586 flow [2024-11-12 20:47:53,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 551 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:47:53,150 INFO L231 Difference]: Finished difference. Result has 79 places, 59 transitions, 313 flow [2024-11-12 20:47:53,150 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=313, PETRI_PLACES=79, PETRI_TRANSITIONS=59} [2024-11-12 20:47:53,150 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 30 predicate places. [2024-11-12 20:47:53,151 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 59 transitions, 313 flow [2024-11-12 20:47:53,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:53,151 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:53,151 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:53,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 20:47:53,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-12 20:47:53,352 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:53,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:53,353 INFO L85 PathProgramCache]: Analyzing trace with hash 560903853, now seen corresponding path program 2 times [2024-11-12 20:47:53,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:53,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737286106] [2024-11-12 20:47:53,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:53,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:53,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:53,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737286106] [2024-11-12 20:47:53,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737286106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:53,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567637629] [2024-11-12 20:47:53,794 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:47:53,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:53,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:53,798 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:53,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 20:47:53,871 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:47:53,872 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:47:53,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-12 20:47:53,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:53,938 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 [2024-11-12 20:47:54,198 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-12 20:47:54,198 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 23 treesize of output 10 [2024-11-12 20:47:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:54,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:54,811 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 41 treesize of output 37 [2024-11-12 20:47:54,819 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-12 20:47:54,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 55 treesize of output 47 [2024-11-12 20:47:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:54,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567637629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:54,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:54,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2024-11-12 20:47:54,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227575542] [2024-11-12 20:47:54,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:54,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-12 20:47:54,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:54,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-12 20:47:54,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 20:47:55,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-12 20:47:55,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 59 transitions, 313 flow. Second operand has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:55,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:55,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-12 20:47:55,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:58,088 INFO L124 PetriNetUnfolderBase]: 5412/10120 cut-off events. [2024-11-12 20:47:58,088 INFO L125 PetriNetUnfolderBase]: For 20425/20667 co-relation queries the response was YES. [2024-11-12 20:47:58,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29071 conditions, 10120 events. 5412/10120 cut-off events. For 20425/20667 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 75489 event pairs, 994 based on Foata normal form. 458/10272 useless extension candidates. Maximal degree in co-relation 29050. Up to 1919 conditions per place. [2024-11-12 20:47:58,220 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 356 selfloop transitions, 62 changer transitions 16/445 dead transitions. [2024-11-12 20:47:58,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 445 transitions, 2733 flow [2024-11-12 20:47:58,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-12 20:47:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-12 20:47:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1038 transitions. [2024-11-12 20:47:58,225 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5295918367346939 [2024-11-12 20:47:58,225 INFO L175 Difference]: Start difference. First operand has 79 places, 59 transitions, 313 flow. Second operand 40 states and 1038 transitions. [2024-11-12 20:47:58,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 445 transitions, 2733 flow [2024-11-12 20:47:58,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 445 transitions, 2689 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-12 20:47:58,247 INFO L231 Difference]: Finished difference. Result has 128 places, 111 transitions, 1022 flow [2024-11-12 20:47:58,248 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1022, PETRI_PLACES=128, PETRI_TRANSITIONS=111} [2024-11-12 20:47:58,249 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 79 predicate places. [2024-11-12 20:47:58,249 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 1022 flow [2024-11-12 20:47:58,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:58,251 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:58,251 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:58,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 20:47:58,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-12 20:47:58,456 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:47:58,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:58,459 INFO L85 PathProgramCache]: Analyzing trace with hash 320535901, now seen corresponding path program 3 times [2024-11-12 20:47:58,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:58,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574898863] [2024-11-12 20:47:58,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:58,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:58,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:58,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574898863] [2024-11-12 20:47:58,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574898863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:58,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589179820] [2024-11-12 20:47:58,871 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 20:47:58,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:58,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:58,872 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:58,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 20:47:58,931 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 20:47:58,931 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:47:58,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:47:58,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 20:47:59,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:59,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:47:59,076 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 19 [2024-11-12 20:47:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 20:47:59,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589179820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:59,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:59,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 23 [2024-11-12 20:47:59,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732163861] [2024-11-12 20:47:59,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:59,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-12 20:47:59,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:59,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-12 20:47:59,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-11-12 20:47:59,321 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-12 20:47:59,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 111 transitions, 1022 flow. Second operand has 25 states, 25 states have (on average 18.12) internal successors, (453), 25 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:59,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:59,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-12 20:47:59,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:01,699 INFO L124 PetriNetUnfolderBase]: 7732/14654 cut-off events. [2024-11-12 20:48:01,699 INFO L125 PetriNetUnfolderBase]: For 107842/108198 co-relation queries the response was YES. [2024-11-12 20:48:01,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53563 conditions, 14654 events. 7732/14654 cut-off events. For 107842/108198 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 112965 event pairs, 454 based on Foata normal form. 674/14744 useless extension candidates. Maximal degree in co-relation 53522. Up to 2163 conditions per place. [2024-11-12 20:48:01,793 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 403 selfloop transitions, 83 changer transitions 20/517 dead transitions. [2024-11-12 20:48:01,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 517 transitions, 4139 flow [2024-11-12 20:48:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-12 20:48:01,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-12 20:48:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1070 transitions. [2024-11-12 20:48:01,796 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5459183673469388 [2024-11-12 20:48:01,796 INFO L175 Difference]: Start difference. First operand has 128 places, 111 transitions, 1022 flow. Second operand 40 states and 1070 transitions. [2024-11-12 20:48:01,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 517 transitions, 4139 flow [2024-11-12 20:48:02,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 517 transitions, 3809 flow, removed 149 selfloop flow, removed 10 redundant places. [2024-11-12 20:48:02,026 INFO L231 Difference]: Finished difference. Result has 170 places, 143 transitions, 1453 flow [2024-11-12 20:48:02,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1453, PETRI_PLACES=170, PETRI_TRANSITIONS=143} [2024-11-12 20:48:02,027 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 121 predicate places. [2024-11-12 20:48:02,027 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 1453 flow [2024-11-12 20:48:02,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 18.12) internal successors, (453), 25 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:02,027 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:02,027 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:02,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-12 20:48:02,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 20:48:02,228 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:48:02,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash 372327168, now seen corresponding path program 1 times [2024-11-12 20:48:02,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:02,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837942267] [2024-11-12 20:48:02,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:02,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:02,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:02,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837942267] [2024-11-12 20:48:02,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837942267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:02,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158875878] [2024-11-12 20:48:02,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:02,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:02,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:02,870 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:02,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 20:48:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:02,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-12 20:48:02,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:03,425 INFO L349 Elim1Store]: treesize reduction 38, result has 15.6 percent of original size [2024-11-12 20:48:03,425 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 46 treesize of output 19 [2024-11-12 20:48:03,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:03,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:03,713 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2024-11-12 20:48:03,713 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 48 treesize of output 43 [2024-11-12 20:48:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:04,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158875878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:04,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:04,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2024-11-12 20:48:04,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704137561] [2024-11-12 20:48:04,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:04,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-12 20:48:04,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:04,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-12 20:48:04,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1022, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 20:48:04,474 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-12 20:48:04,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 143 transitions, 1453 flow. Second operand has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:04,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:04,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-12 20:48:04,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:09,316 INFO L124 PetriNetUnfolderBase]: 13910/26638 cut-off events. [2024-11-12 20:48:09,317 INFO L125 PetriNetUnfolderBase]: For 294540/295292 co-relation queries the response was YES. [2024-11-12 20:48:09,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107520 conditions, 26638 events. 13910/26638 cut-off events. For 294540/295292 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 228511 event pairs, 904 based on Foata normal form. 1752/27506 useless extension candidates. Maximal degree in co-relation 107465. Up to 8299 conditions per place. [2024-11-12 20:48:09,604 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 338 selfloop transitions, 117 changer transitions 8/474 dead transitions. [2024-11-12 20:48:09,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 474 transitions, 4998 flow [2024-11-12 20:48:09,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-12 20:48:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-12 20:48:09,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 767 transitions. [2024-11-12 20:48:09,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5217687074829932 [2024-11-12 20:48:09,606 INFO L175 Difference]: Start difference. First operand has 170 places, 143 transitions, 1453 flow. Second operand 30 states and 767 transitions. [2024-11-12 20:48:09,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 474 transitions, 4998 flow [2024-11-12 20:48:10,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 474 transitions, 4247 flow, removed 246 selfloop flow, removed 26 redundant places. [2024-11-12 20:48:10,876 INFO L231 Difference]: Finished difference. Result has 186 places, 218 transitions, 2707 flow [2024-11-12 20:48:10,876 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2707, PETRI_PLACES=186, PETRI_TRANSITIONS=218} [2024-11-12 20:48:10,876 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 137 predicate places. [2024-11-12 20:48:10,876 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 218 transitions, 2707 flow [2024-11-12 20:48:10,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:10,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:10,877 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:10,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-12 20:48:11,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 20:48:11,077 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:48:11,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:11,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2125079227, now seen corresponding path program 4 times [2024-11-12 20:48:11,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:11,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693602026] [2024-11-12 20:48:11,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:11,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:11,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:11,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693602026] [2024-11-12 20:48:11,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693602026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:11,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615205440] [2024-11-12 20:48:11,506 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 20:48:11,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:11,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:11,508 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:11,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 20:48:11,579 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 20:48:11,580 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:48:11,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-12 20:48:11,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:11,943 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-12 20:48:11,944 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 23 treesize of output 10 [2024-11-12 20:48:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:11,960 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:12,042 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-12 20:48:12,043 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 [2024-11-12 20:48:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:12,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615205440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:12,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:12,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2024-11-12 20:48:12,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293843779] [2024-11-12 20:48:12,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:12,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-12 20:48:12,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:12,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-12 20:48:12,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 20:48:12,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-12 20:48:12,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 218 transitions, 2707 flow. Second operand has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:12,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:12,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-12 20:48:12,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:19,525 INFO L124 PetriNetUnfolderBase]: 20182/37704 cut-off events. [2024-11-12 20:48:19,525 INFO L125 PetriNetUnfolderBase]: For 601675/603225 co-relation queries the response was YES. [2024-11-12 20:48:19,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164682 conditions, 37704 events. 20182/37704 cut-off events. For 601675/603225 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 325507 event pairs, 3054 based on Foata normal form. 1202/37474 useless extension candidates. Maximal degree in co-relation 164622. Up to 5355 conditions per place. [2024-11-12 20:48:19,966 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 384 selfloop transitions, 210 changer transitions 0/605 dead transitions. [2024-11-12 20:48:19,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 605 transitions, 7443 flow [2024-11-12 20:48:19,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-12 20:48:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-12 20:48:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 828 transitions. [2024-11-12 20:48:19,971 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5450954575378538 [2024-11-12 20:48:19,971 INFO L175 Difference]: Start difference. First operand has 186 places, 218 transitions, 2707 flow. Second operand 31 states and 828 transitions. [2024-11-12 20:48:19,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 605 transitions, 7443 flow [2024-11-12 20:48:22,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 605 transitions, 6669 flow, removed 348 selfloop flow, removed 15 redundant places. [2024-11-12 20:48:22,572 INFO L231 Difference]: Finished difference. Result has 211 places, 324 transitions, 4832 flow [2024-11-12 20:48:22,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=4832, PETRI_PLACES=211, PETRI_TRANSITIONS=324} [2024-11-12 20:48:22,573 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 162 predicate places. [2024-11-12 20:48:22,573 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 324 transitions, 4832 flow [2024-11-12 20:48:22,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:22,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:22,573 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:22,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-12 20:48:22,774 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 [2024-11-12 20:48:22,774 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:48:22,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash -539618824, now seen corresponding path program 2 times [2024-11-12 20:48:22,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:22,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813781476] [2024-11-12 20:48:22,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:22,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:23,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:23,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813781476] [2024-11-12 20:48:23,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813781476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:23,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943705675] [2024-11-12 20:48:23,458 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:48:23,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:23,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:23,459 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:23,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 20:48:23,523 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:48:23,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:48:23,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-12 20:48:23,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:23,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:24,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:24,238 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 49 treesize of output 51 [2024-11-12 20:48:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:24,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943705675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:24,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:24,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2024-11-12 20:48:24,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674195942] [2024-11-12 20:48:24,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:24,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-12 20:48:24,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:24,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-12 20:48:24,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 20:48:24,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-12 20:48:24,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 324 transitions, 4832 flow. Second operand has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:24,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:24,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-12 20:48:24,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:32,868 INFO L124 PetriNetUnfolderBase]: 22474/42538 cut-off events. [2024-11-12 20:48:32,868 INFO L125 PetriNetUnfolderBase]: For 701070/702728 co-relation queries the response was YES. [2024-11-12 20:48:33,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196617 conditions, 42538 events. 22474/42538 cut-off events. For 701070/702728 co-relation queries the response was YES. Maximal size of possible extension queue 974. Compared 380770 event pairs, 2480 based on Foata normal form. 1162/42194 useless extension candidates. Maximal degree in co-relation 196546. Up to 21128 conditions per place. [2024-11-12 20:48:33,446 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 607 selfloop transitions, 140 changer transitions 56/814 dead transitions. [2024-11-12 20:48:33,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 814 transitions, 9616 flow [2024-11-12 20:48:33,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-12 20:48:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-12 20:48:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1227 transitions. [2024-11-12 20:48:33,453 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.532783326096396 [2024-11-12 20:48:33,453 INFO L175 Difference]: Start difference. First operand has 211 places, 324 transitions, 4832 flow. Second operand 47 states and 1227 transitions. [2024-11-12 20:48:33,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 814 transitions, 9616 flow [2024-11-12 20:48:40,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 814 transitions, 8018 flow, removed 757 selfloop flow, removed 11 redundant places. [2024-11-12 20:48:40,448 INFO L231 Difference]: Finished difference. Result has 255 places, 383 transitions, 5317 flow [2024-11-12 20:48:40,448 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3621, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=5317, PETRI_PLACES=255, PETRI_TRANSITIONS=383} [2024-11-12 20:48:40,448 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 206 predicate places. [2024-11-12 20:48:40,448 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 383 transitions, 5317 flow [2024-11-12 20:48:40,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:40,449 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:40,449 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:40,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-12 20:48:40,651 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 [2024-11-12 20:48:40,651 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:48:40,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:40,652 INFO L85 PathProgramCache]: Analyzing trace with hash -625542526, now seen corresponding path program 3 times [2024-11-12 20:48:40,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:40,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052105204] [2024-11-12 20:48:40,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:40,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:41,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:41,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052105204] [2024-11-12 20:48:41,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052105204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:41,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711953130] [2024-11-12 20:48:41,557 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 20:48:41,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:41,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:41,558 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:41,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 20:48:41,621 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 20:48:41,621 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:48:41,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 20:48:41,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 20:48:41,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:41,980 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:41,980 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 49 treesize of output 51 [2024-11-12 20:48:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 20:48:42,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711953130] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:42,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:42,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 25 [2024-11-12 20:48:42,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982126022] [2024-11-12 20:48:42,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:42,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-12 20:48:42,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:42,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-12 20:48:42,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2024-11-12 20:48:42,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-12 20:48:42,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 383 transitions, 5317 flow. Second operand has 27 states, 27 states have (on average 18.037037037037038) internal successors, (487), 27 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:42,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:42,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-12 20:48:42,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:51,053 INFO L124 PetriNetUnfolderBase]: 26553/50380 cut-off events. [2024-11-12 20:48:51,053 INFO L125 PetriNetUnfolderBase]: For 758928/760727 co-relation queries the response was YES. [2024-11-12 20:48:51,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220297 conditions, 50380 events. 26553/50380 cut-off events. For 758928/760727 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 462384 event pairs, 3443 based on Foata normal form. 1341/50004 useless extension candidates. Maximal degree in co-relation 220221. Up to 28177 conditions per place. [2024-11-12 20:48:52,121 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 568 selfloop transitions, 113 changer transitions 32/724 dead transitions. [2024-11-12 20:48:52,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 724 transitions, 8843 flow [2024-11-12 20:48:52,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-12 20:48:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-12 20:48:52,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 831 transitions. [2024-11-12 20:48:52,123 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5139146567717996 [2024-11-12 20:48:52,123 INFO L175 Difference]: Start difference. First operand has 255 places, 383 transitions, 5317 flow. Second operand 33 states and 831 transitions. [2024-11-12 20:48:52,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 724 transitions, 8843 flow [2024-11-12 20:48:59,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 724 transitions, 8300 flow, removed 233 selfloop flow, removed 20 redundant places. [2024-11-12 20:48:59,743 INFO L231 Difference]: Finished difference. Result has 273 places, 442 transitions, 5962 flow [2024-11-12 20:48:59,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4820, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=5962, PETRI_PLACES=273, PETRI_TRANSITIONS=442} [2024-11-12 20:48:59,744 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 224 predicate places. [2024-11-12 20:48:59,744 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 442 transitions, 5962 flow [2024-11-12 20:48:59,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 18.037037037037038) internal successors, (487), 27 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:59,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:59,744 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:59,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-12 20:48:59,945 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 [2024-11-12 20:48:59,945 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:48:59,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:59,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1538980965, now seen corresponding path program 5 times [2024-11-12 20:48:59,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:59,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489396516] [2024-11-12 20:48:59,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:59,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:49:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:49:00,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:49:00,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489396516] [2024-11-12 20:49:00,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489396516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:49:00,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111306225] [2024-11-12 20:49:00,563 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 20:49:00,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:49:00,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:49:00,565 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:49:00,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 20:49:00,644 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-12 20:49:00,644 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:49:00,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 20:49:00,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:49:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 20:49:00,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:49:01,040 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:49:01,041 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 50 treesize of output 52 [2024-11-12 20:49:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 20:49:01,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111306225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:49:01,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:49:01,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 6] total 27 [2024-11-12 20:49:01,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943609546] [2024-11-12 20:49:01,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:49:01,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-12 20:49:01,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:49:01,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-12 20:49:01,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2024-11-12 20:49:01,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-12 20:49:01,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 442 transitions, 5962 flow. Second operand has 29 states, 29 states have (on average 17.96551724137931) internal successors, (521), 29 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:49:01,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:49:01,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-12 20:49:01,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand