./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/array-eq-trans.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/array-eq-trans.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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:41:05,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:41:05,501 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:41:05,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:41:05,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:41:05,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:41:05,532 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:41:05,532 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:41:05,533 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:41:05,533 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:41:05,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:41:05,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:41:05,534 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:41:05,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:41:05,535 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:41:05,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:41:05,535 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:41:05,535 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:41:05,536 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:41:05,536 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:41:05,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:41:05,540 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:41:05,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:41:05,541 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:41:05,541 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:41:05,541 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:41:05,542 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:41:05,542 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:41:05,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:41:05,543 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:41:05,543 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:41:05,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:41:05,544 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:41:05,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:41:05,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:41:05,548 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:41:05,548 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:41:05,548 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:41:05,548 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:41:05,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:41:05,549 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:41:05,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:41:05,550 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:41:05,550 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:41:05,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2024-11-12 20:41:05,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:41:05,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:41:05,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:41:05,817 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:41:05,817 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:41:05,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-12 20:41:07,218 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:41:07,402 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:41:07,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-12 20:41:07,410 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb05fc87a/61fb814b24944b398a40fc97883d5ccb/FLAG2312654bc [2024-11-12 20:41:07,423 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb05fc87a/61fb814b24944b398a40fc97883d5ccb [2024-11-12 20:41:07,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:41:07,426 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:41:07,427 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:41:07,427 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:41:07,432 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:41:07,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:41:07" (1/1) ... [2024-11-12 20:41:07,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e8e4b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07, skipping insertion in model container [2024-11-12 20:41:07,433 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:41:07" (1/1) ... [2024-11-12 20:41:07,457 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:41:07,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:41:07,634 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:41:07,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:41:07,668 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:41:07,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07 WrapperNode [2024-11-12 20:41:07,669 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:41:07,670 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:41:07,670 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:41:07,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:41:07,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07" (1/1) ... [2024-11-12 20:41:07,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07" (1/1) ... [2024-11-12 20:41:07,712 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 202 [2024-11-12 20:41:07,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:41:07,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:41:07,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:41:07,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:41:07,722 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07" (1/1) ... [2024-11-12 20:41:07,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07" (1/1) ... [2024-11-12 20:41:07,725 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07" (1/1) ... [2024-11-12 20:41:07,745 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-12 20:41:07,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07" (1/1) ... [2024-11-12 20:41:07,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07" (1/1) ... [2024-11-12 20:41:07,752 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07" (1/1) ... [2024-11-12 20:41:07,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07" (1/1) ... [2024-11-12 20:41:07,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07" (1/1) ... [2024-11-12 20:41:07,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07" (1/1) ... [2024-11-12 20:41:07,762 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:41:07,763 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:41:07,763 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:41:07,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:41:07,764 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07" (1/1) ... [2024-11-12 20:41:07,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:41:07,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:07,795 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 20:41:07,802 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 20:41:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:41:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:41:07,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:41:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:41:07,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:41:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 20:41:07,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 20:41:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:41:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:41:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:41:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:41:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 20:41:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:41:07,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:41:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:41:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:41:07,847 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 20:41:07,976 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:41:07,978 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:41:08,436 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:41:08,437 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:41:08,713 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:41:08,713 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-12 20:41:08,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:08 BoogieIcfgContainer [2024-11-12 20:41:08,714 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:41:08,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:41:08,717 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:41:08,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:41:08,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:41:07" (1/3) ... [2024-11-12 20:41:08,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39447c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:08, skipping insertion in model container [2024-11-12 20:41:08,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:07" (2/3) ... [2024-11-12 20:41:08,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39447c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:08, skipping insertion in model container [2024-11-12 20:41:08,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:08" (3/3) ... [2024-11-12 20:41:08,723 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2024-11-12 20:41:08,740 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:41:08,740 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-12 20:41:08,740 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:41:08,787 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 20:41:08,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 62 transitions, 145 flow [2024-11-12 20:41:08,886 INFO L124 PetriNetUnfolderBase]: 9/59 cut-off events. [2024-11-12 20:41:08,889 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 20:41:08,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 9/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-11-12 20:41:08,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 62 transitions, 145 flow [2024-11-12 20:41:08,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 57 transitions, 129 flow [2024-11-12 20:41:08,913 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:41:08,951 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;@2c8965ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:41:08,951 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-12 20:41:08,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:41:08,957 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:41:08,957 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:41:08,958 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:08,958 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:41:08,959 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:08,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:08,969 INFO L85 PathProgramCache]: Analyzing trace with hash 770478, now seen corresponding path program 1 times [2024-11-12 20:41:08,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:08,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123148805] [2024-11-12 20:41:08,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:08,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:09,201 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 20:41:09,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:09,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123148805] [2024-11-12 20:41:09,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123148805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:09,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:09,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:41:09,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518842764] [2024-11-12 20:41:09,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:09,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:09,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:09,263 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-12 20:41:09,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 20:41:09,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:09,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-12 20:41:09,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:09,657 INFO L124 PetriNetUnfolderBase]: 1728/2695 cut-off events. [2024-11-12 20:41:09,657 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-12 20:41:09,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5111 conditions, 2695 events. 1728/2695 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14562 event pairs, 995 based on Foata normal form. 3/1816 useless extension candidates. Maximal degree in co-relation 4712. Up to 2276 conditions per place. [2024-11-12 20:41:09,682 INFO L140 encePairwiseOnDemand]: 46/62 looper letters, 41 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-11-12 20:41:09,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 249 flow [2024-11-12 20:41:09,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:09,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:09,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-12 20:41:09,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5201612903225806 [2024-11-12 20:41:09,698 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 129 flow. Second operand 4 states and 129 transitions. [2024-11-12 20:41:09,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 249 flow [2024-11-12 20:41:09,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 240 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:41:09,708 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 208 flow [2024-11-12 20:41:09,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2024-11-12 20:41:09,717 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-11-12 20:41:09,717 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 208 flow [2024-11-12 20:41:09,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 20:41:09,718 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:09,718 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:41:09,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:41:09,719 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:09,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:09,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1479239291, now seen corresponding path program 1 times [2024-11-12 20:41:09,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:09,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327256046] [2024-11-12 20:41:09,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:09,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:09,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:09,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:09,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327256046] [2024-11-12 20:41:09,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327256046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:09,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075632527] [2024-11-12 20:41:09,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:09,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:09,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:09,904 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 20:41:09,915 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 20:41:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:09,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:41:09,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:10,026 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:41:10,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075632527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:10,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:41:10,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-12 20:41:10,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717962368] [2024-11-12 20:41:10,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:10,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:41:10,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:41:10,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:41:10,065 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-12 20:41:10,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 20:41:10,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:10,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-12 20:41:10,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:10,330 INFO L124 PetriNetUnfolderBase]: 1728/2692 cut-off events. [2024-11-12 20:41:10,330 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-12 20:41:10,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5088 conditions, 2692 events. 1728/2692 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14544 event pairs, 995 based on Foata normal form. 3/1818 useless extension candidates. Maximal degree in co-relation 5015. Up to 2261 conditions per place. [2024-11-12 20:41:10,345 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 31 selfloop transitions, 17 changer transitions 0/63 dead transitions. [2024-11-12 20:41:10,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 292 flow [2024-11-12 20:41:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:41:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:41:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-11-12 20:41:10,348 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-11-12 20:41:10,348 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 208 flow. Second operand 6 states and 159 transitions. [2024-11-12 20:41:10,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 292 flow [2024-11-12 20:41:10,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:41:10,352 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 230 flow [2024-11-12 20:41:10,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-11-12 20:41:10,354 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2024-11-12 20:41:10,355 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 230 flow [2024-11-12 20:41:10,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 20:41:10,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:10,356 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:41:10,370 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 20:41:10,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:10,557 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:10,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:10,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1388221465, now seen corresponding path program 1 times [2024-11-12 20:41:10,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:10,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220455705] [2024-11-12 20:41:10,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:10,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:10,646 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 20:41:10,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:10,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220455705] [2024-11-12 20:41:10,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220455705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:10,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187019809] [2024-11-12 20:41:10,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:10,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:10,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:10,650 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 20:41:10,651 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 20:41:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:10,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:41:10,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:10,737 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 20:41:10,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:10,773 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 20:41:10,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187019809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:10,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:10,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-12 20:41:10,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044480] [2024-11-12 20:41:10,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:10,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:41:10,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:10,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:41:10,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:41:10,812 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-12 20:41:10,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 230 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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 20:41:10,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:10,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-12 20:41:10,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:11,138 INFO L124 PetriNetUnfolderBase]: 1737/2728 cut-off events. [2024-11-12 20:41:11,139 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-11-12 20:41:11,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 2728 events. 1737/2728 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 14903 event pairs, 995 based on Foata normal form. 9/1860 useless extension candidates. Maximal degree in co-relation 5017. Up to 2276 conditions per place. [2024-11-12 20:41:11,154 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 38 selfloop transitions, 37 changer transitions 0/90 dead transitions. [2024-11-12 20:41:11,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 90 transitions, 554 flow [2024-11-12 20:41:11,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:41:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:41:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-11-12 20:41:11,158 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-11-12 20:41:11,159 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 230 flow. Second operand 10 states and 264 transitions. [2024-11-12 20:41:11,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 90 transitions, 554 flow [2024-11-12 20:41:11,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 90 transitions, 471 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-12 20:41:11,163 INFO L231 Difference]: Finished difference. Result has 68 places, 90 transitions, 445 flow [2024-11-12 20:41:11,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=445, PETRI_PLACES=68, PETRI_TRANSITIONS=90} [2024-11-12 20:41:11,164 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-12 20:41:11,165 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 90 transitions, 445 flow [2024-11-12 20:41:11,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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 20:41:11,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:11,166 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:11,181 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 20:41:11,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-12 20:41:11,370 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:11,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:11,370 INFO L85 PathProgramCache]: Analyzing trace with hash 2068068255, now seen corresponding path program 1 times [2024-11-12 20:41:11,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:11,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921604379] [2024-11-12 20:41:11,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:11,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:11,411 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 20:41:11,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:11,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921604379] [2024-11-12 20:41:11,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921604379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:11,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:11,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:41:11,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243399884] [2024-11-12 20:41:11,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:11,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:11,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:11,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:11,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:11,417 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-12 20:41:11,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 90 transitions, 445 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:11,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:11,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-12 20:41:11,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:11,631 INFO L124 PetriNetUnfolderBase]: 2009/3084 cut-off events. [2024-11-12 20:41:11,632 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-11-12 20:41:11,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5978 conditions, 3084 events. 2009/3084 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 16788 event pairs, 829 based on Foata normal form. 86/2159 useless extension candidates. Maximal degree in co-relation 5880. Up to 1981 conditions per place. [2024-11-12 20:41:11,649 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 87 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-11-12 20:41:11,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 660 flow [2024-11-12 20:41:11,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:11,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:11,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-11-12 20:41:11,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5766129032258065 [2024-11-12 20:41:11,651 INFO L175 Difference]: Start difference. First operand has 68 places, 90 transitions, 445 flow. Second operand 4 states and 143 transitions. [2024-11-12 20:41:11,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 660 flow [2024-11-12 20:41:11,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 106 transitions, 623 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-12 20:41:11,656 INFO L231 Difference]: Finished difference. Result has 68 places, 89 transitions, 412 flow [2024-11-12 20:41:11,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=412, PETRI_PLACES=68, PETRI_TRANSITIONS=89} [2024-11-12 20:41:11,657 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-12 20:41:11,658 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 89 transitions, 412 flow [2024-11-12 20:41:11,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:11,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:11,658 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:11,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:41:11,659 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:11,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:11,659 INFO L85 PathProgramCache]: Analyzing trace with hash -314392714, now seen corresponding path program 1 times [2024-11-12 20:41:11,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:11,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555358748] [2024-11-12 20:41:11,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:11,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:11,713 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 20:41:11,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:11,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555358748] [2024-11-12 20:41:11,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555358748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:11,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:11,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:41:11,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057412217] [2024-11-12 20:41:11,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:11,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:11,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:11,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:11,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:11,720 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-12 20:41:11,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 89 transitions, 412 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:11,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:11,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-12 20:41:11,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:12,042 INFO L124 PetriNetUnfolderBase]: 3164/4652 cut-off events. [2024-11-12 20:41:12,042 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2024-11-12 20:41:12,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9464 conditions, 4652 events. 3164/4652 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 24920 event pairs, 657 based on Foata normal form. 86/3558 useless extension candidates. Maximal degree in co-relation 9370. Up to 2383 conditions per place. [2024-11-12 20:41:12,069 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 112 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-11-12 20:41:12,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 131 transitions, 738 flow [2024-11-12 20:41:12,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:12,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:12,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-12 20:41:12,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2024-11-12 20:41:12,070 INFO L175 Difference]: Start difference. First operand has 68 places, 89 transitions, 412 flow. Second operand 4 states and 168 transitions. [2024-11-12 20:41:12,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 131 transitions, 738 flow [2024-11-12 20:41:12,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 131 transitions, 728 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:41:12,074 INFO L231 Difference]: Finished difference. Result has 70 places, 91 transitions, 426 flow [2024-11-12 20:41:12,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=426, PETRI_PLACES=70, PETRI_TRANSITIONS=91} [2024-11-12 20:41:12,075 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2024-11-12 20:41:12,075 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 91 transitions, 426 flow [2024-11-12 20:41:12,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:12,076 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:12,076 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:12,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:41:12,076 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:12,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:12,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1767512434, now seen corresponding path program 1 times [2024-11-12 20:41:12,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:12,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422019935] [2024-11-12 20:41:12,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:12,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:12,114 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 20:41:12,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:12,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422019935] [2024-11-12 20:41:12,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422019935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:12,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:12,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:41:12,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419786537] [2024-11-12 20:41:12,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:12,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:12,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:12,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:12,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:12,120 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-12 20:41:12,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 91 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 20:41:12,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:12,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-12 20:41:12,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:12,554 INFO L124 PetriNetUnfolderBase]: 5476/8026 cut-off events. [2024-11-12 20:41:12,554 INFO L125 PetriNetUnfolderBase]: For 1195/1297 co-relation queries the response was YES. [2024-11-12 20:41:12,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16805 conditions, 8026 events. 5476/8026 cut-off events. For 1195/1297 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 45427 event pairs, 1108 based on Foata normal form. 152/6208 useless extension candidates. Maximal degree in co-relation 16709. Up to 4449 conditions per place. [2024-11-12 20:41:12,616 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 116 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2024-11-12 20:41:12,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 134 transitions, 779 flow [2024-11-12 20:41:12,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-12 20:41:12,617 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6733870967741935 [2024-11-12 20:41:12,618 INFO L175 Difference]: Start difference. First operand has 70 places, 91 transitions, 426 flow. Second operand 4 states and 167 transitions. [2024-11-12 20:41:12,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 134 transitions, 779 flow [2024-11-12 20:41:12,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 134 transitions, 775 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:41:12,623 INFO L231 Difference]: Finished difference. Result has 74 places, 93 transitions, 446 flow [2024-11-12 20:41:12,623 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=74, PETRI_TRANSITIONS=93} [2024-11-12 20:41:12,624 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2024-11-12 20:41:12,624 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 93 transitions, 446 flow [2024-11-12 20:41:12,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 20:41:12,624 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:12,624 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:12,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:41:12,624 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:12,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:12,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1456205597, now seen corresponding path program 1 times [2024-11-12 20:41:12,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:12,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335623650] [2024-11-12 20:41:12,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:12,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:12,675 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 20:41:12,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:12,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335623650] [2024-11-12 20:41:12,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335623650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:12,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:12,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:41:12,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982430828] [2024-11-12 20:41:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:12,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:12,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:12,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:12,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:12,684 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-12 20:41:12,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 93 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 20:41:12,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:12,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-12 20:41:12,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:13,493 INFO L124 PetriNetUnfolderBase]: 8504/12528 cut-off events. [2024-11-12 20:41:13,493 INFO L125 PetriNetUnfolderBase]: For 3516/3966 co-relation queries the response was YES. [2024-11-12 20:41:13,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27627 conditions, 12528 events. 8504/12528 cut-off events. For 3516/3966 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 74671 event pairs, 2163 based on Foata normal form. 224/10503 useless extension candidates. Maximal degree in co-relation 27529. Up to 6413 conditions per place. [2024-11-12 20:41:13,573 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 119 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2024-11-12 20:41:13,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 824 flow [2024-11-12 20:41:13,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:13,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:13,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-12 20:41:13,575 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-12 20:41:13,575 INFO L175 Difference]: Start difference. First operand has 74 places, 93 transitions, 446 flow. Second operand 4 states and 164 transitions. [2024-11-12 20:41:13,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 824 flow [2024-11-12 20:41:13,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 137 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:41:13,580 INFO L231 Difference]: Finished difference. Result has 78 places, 95 transitions, 466 flow [2024-11-12 20:41:13,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=78, PETRI_TRANSITIONS=95} [2024-11-12 20:41:13,581 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2024-11-12 20:41:13,581 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 95 transitions, 466 flow [2024-11-12 20:41:13,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 20:41:13,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:13,581 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:13,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:41:13,582 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:13,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:13,582 INFO L85 PathProgramCache]: Analyzing trace with hash 130547706, now seen corresponding path program 1 times [2024-11-12 20:41:13,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:13,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555133360] [2024-11-12 20:41:13,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:13,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:41:13,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:13,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555133360] [2024-11-12 20:41:13,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555133360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:13,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:13,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:41:13,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770307662] [2024-11-12 20:41:13,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:13,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:13,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:13,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:13,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:13,685 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-12 20:41:13,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 95 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 20:41:13,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:13,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-12 20:41:13,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:14,685 INFO L124 PetriNetUnfolderBase]: 9178/14736 cut-off events. [2024-11-12 20:41:14,685 INFO L125 PetriNetUnfolderBase]: For 4978/5117 co-relation queries the response was YES. [2024-11-12 20:41:14,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33377 conditions, 14736 events. 9178/14736 cut-off events. For 4978/5117 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 101326 event pairs, 6652 based on Foata normal form. 0/13048 useless extension candidates. Maximal degree in co-relation 33220. Up to 9737 conditions per place. [2024-11-12 20:41:14,788 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 124 selfloop transitions, 10 changer transitions 0/151 dead transitions. [2024-11-12 20:41:14,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 151 transitions, 1002 flow [2024-11-12 20:41:14,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:41:14,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:41:14,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-11-12 20:41:14,789 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6258064516129033 [2024-11-12 20:41:14,790 INFO L175 Difference]: Start difference. First operand has 78 places, 95 transitions, 466 flow. Second operand 5 states and 194 transitions. [2024-11-12 20:41:14,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 151 transitions, 1002 flow [2024-11-12 20:41:14,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 151 transitions, 999 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:41:14,798 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 558 flow [2024-11-12 20:41:14,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2024-11-12 20:41:14,799 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2024-11-12 20:41:14,800 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 558 flow [2024-11-12 20:41:14,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 20:41:14,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:14,800 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:14,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 20:41:14,800 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:14,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:14,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1804449395, now seen corresponding path program 1 times [2024-11-12 20:41:14,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:14,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366324059] [2024-11-12 20:41:14,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:14,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:41:14,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:14,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366324059] [2024-11-12 20:41:14,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366324059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:14,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:14,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:41:14,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213095132] [2024-11-12 20:41:14,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:14,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:41:14,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:41:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:41:14,875 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-12 20:41:14,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 20:41:14,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:14,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-12 20:41:14,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:16,182 INFO L124 PetriNetUnfolderBase]: 11462/18144 cut-off events. [2024-11-12 20:41:16,182 INFO L125 PetriNetUnfolderBase]: For 6345/6757 co-relation queries the response was YES. [2024-11-12 20:41:16,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41392 conditions, 18144 events. 11462/18144 cut-off events. For 6345/6757 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 125296 event pairs, 4982 based on Foata normal form. 0/16680 useless extension candidates. Maximal degree in co-relation 41174. Up to 6489 conditions per place. [2024-11-12 20:41:16,310 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 139 selfloop transitions, 14 changer transitions 0/170 dead transitions. [2024-11-12 20:41:16,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 170 transitions, 1137 flow [2024-11-12 20:41:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:41:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:41:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 235 transitions. [2024-11-12 20:41:16,312 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6317204301075269 [2024-11-12 20:41:16,312 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 558 flow. Second operand 6 states and 235 transitions. [2024-11-12 20:41:16,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 170 transitions, 1137 flow [2024-11-12 20:41:16,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 170 transitions, 1133 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 20:41:16,325 INFO L231 Difference]: Finished difference. Result has 89 places, 106 transitions, 637 flow [2024-11-12 20:41:16,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=637, PETRI_PLACES=89, PETRI_TRANSITIONS=106} [2024-11-12 20:41:16,326 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2024-11-12 20:41:16,326 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 106 transitions, 637 flow [2024-11-12 20:41:16,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 20:41:16,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:16,327 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-12 20:41:16,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:41:16,327 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:16,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:16,328 INFO L85 PathProgramCache]: Analyzing trace with hash 844002644, now seen corresponding path program 2 times [2024-11-12 20:41:16,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:16,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896362378] [2024-11-12 20:41:16,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:16,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:16,462 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 20:41:16,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:16,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896362378] [2024-11-12 20:41:16,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896362378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:16,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471909790] [2024-11-12 20:41:16,463 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:41:16,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:16,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:16,465 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 20:41:16,467 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 20:41:16,528 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:41:16,529 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:41:16,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 20:41:16,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:16,571 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 20:41:16,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:16,595 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 20:41:16,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471909790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:16,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:16,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-12 20:41:16,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363226094] [2024-11-12 20:41:16,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:16,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 20:41:16,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:16,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 20:41:16,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-12 20:41:16,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-12 20:41:16,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 106 transitions, 637 flow. Second operand has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 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 20:41:16,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:16,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-12 20:41:16,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:18,196 INFO L124 PetriNetUnfolderBase]: 11469/18852 cut-off events. [2024-11-12 20:41:18,197 INFO L125 PetriNetUnfolderBase]: For 7689/7729 co-relation queries the response was YES. [2024-11-12 20:41:18,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43454 conditions, 18852 events. 11469/18852 cut-off events. For 7689/7729 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 138441 event pairs, 8454 based on Foata normal form. 8/17969 useless extension candidates. Maximal degree in co-relation 43134. Up to 15729 conditions per place. [2024-11-12 20:41:18,296 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 40 selfloop transitions, 61 changer transitions 0/115 dead transitions. [2024-11-12 20:41:18,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 115 transitions, 902 flow [2024-11-12 20:41:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 20:41:18,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 20:41:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 519 transitions. [2024-11-12 20:41:18,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3487903225806452 [2024-11-12 20:41:18,300 INFO L175 Difference]: Start difference. First operand has 89 places, 106 transitions, 637 flow. Second operand 24 states and 519 transitions. [2024-11-12 20:41:18,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 115 transitions, 902 flow [2024-11-12 20:41:18,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 115 transitions, 888 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-12 20:41:18,322 INFO L231 Difference]: Finished difference. Result has 111 places, 115 transitions, 833 flow [2024-11-12 20:41:18,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=833, PETRI_PLACES=111, PETRI_TRANSITIONS=115} [2024-11-12 20:41:18,323 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 53 predicate places. [2024-11-12 20:41:18,323 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 115 transitions, 833 flow [2024-11-12 20:41:18,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 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 20:41:18,324 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:18,324 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:18,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 20:41:18,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:18,525 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:18,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash 610272312, now seen corresponding path program 1 times [2024-11-12 20:41:18,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:18,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173013305] [2024-11-12 20:41:18,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:18,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:41:18,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:18,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173013305] [2024-11-12 20:41:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173013305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:18,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:18,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:41:18,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250243806] [2024-11-12 20:41:18,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:18,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:18,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:18,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:18,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:18,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-12 20:41:18,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 833 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 20:41:18,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:18,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-12 20:41:18,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:19,661 INFO L124 PetriNetUnfolderBase]: 9752/15640 cut-off events. [2024-11-12 20:41:19,661 INFO L125 PetriNetUnfolderBase]: For 6269/6469 co-relation queries the response was YES. [2024-11-12 20:41:19,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36428 conditions, 15640 events. 9752/15640 cut-off events. For 6269/6469 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 108079 event pairs, 7166 based on Foata normal form. 0/14999 useless extension candidates. Maximal degree in co-relation 36187. Up to 12337 conditions per place. [2024-11-12 20:41:19,776 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 130 selfloop transitions, 12 changer transitions 5/163 dead transitions. [2024-11-12 20:41:19,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 163 transitions, 1428 flow [2024-11-12 20:41:19,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:41:19,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:41:19,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-11-12 20:41:19,777 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2024-11-12 20:41:19,777 INFO L175 Difference]: Start difference. First operand has 111 places, 115 transitions, 833 flow. Second operand 5 states and 190 transitions. [2024-11-12 20:41:19,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 163 transitions, 1428 flow [2024-11-12 20:41:19,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 163 transitions, 1225 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-11-12 20:41:19,789 INFO L231 Difference]: Finished difference. Result has 105 places, 114 transitions, 695 flow [2024-11-12 20:41:19,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=695, PETRI_PLACES=105, PETRI_TRANSITIONS=114} [2024-11-12 20:41:19,790 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 47 predicate places. [2024-11-12 20:41:19,790 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 114 transitions, 695 flow [2024-11-12 20:41:19,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 20:41:19,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:19,790 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:19,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 20:41:19,790 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:19,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1384429299, now seen corresponding path program 1 times [2024-11-12 20:41:19,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:19,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012968221] [2024-11-12 20:41:19,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:19,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 20:41:19,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:19,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012968221] [2024-11-12 20:41:19,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012968221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:19,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:19,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:41:19,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491352041] [2024-11-12 20:41:19,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:19,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:41:19,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:19,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:41:19,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:41:19,857 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-12 20:41:19,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 114 transitions, 695 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 20:41:19,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:19,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-12 20:41:19,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:21,013 INFO L124 PetriNetUnfolderBase]: 8401/12979 cut-off events. [2024-11-12 20:41:21,013 INFO L125 PetriNetUnfolderBase]: For 5611/6166 co-relation queries the response was YES. [2024-11-12 20:41:21,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31061 conditions, 12979 events. 8401/12979 cut-off events. For 5611/6166 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 82405 event pairs, 3460 based on Foata normal form. 67/12995 useless extension candidates. Maximal degree in co-relation 30838. Up to 5531 conditions per place. [2024-11-12 20:41:21,084 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 144 selfloop transitions, 14 changer transitions 3/177 dead transitions. [2024-11-12 20:41:21,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 177 transitions, 1273 flow [2024-11-12 20:41:21,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:41:21,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:41:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2024-11-12 20:41:21,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6263440860215054 [2024-11-12 20:41:21,086 INFO L175 Difference]: Start difference. First operand has 105 places, 114 transitions, 695 flow. Second operand 6 states and 233 transitions. [2024-11-12 20:41:21,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 177 transitions, 1273 flow [2024-11-12 20:41:21,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 177 transitions, 1249 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:41:21,097 INFO L231 Difference]: Finished difference. Result has 107 places, 114 transitions, 704 flow [2024-11-12 20:41:21,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=704, PETRI_PLACES=107, PETRI_TRANSITIONS=114} [2024-11-12 20:41:21,098 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 49 predicate places. [2024-11-12 20:41:21,098 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 114 transitions, 704 flow [2024-11-12 20:41:21,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 20:41:21,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:21,099 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:21,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 20:41:21,099 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:21,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:21,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1148795679, now seen corresponding path program 1 times [2024-11-12 20:41:21,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:21,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843156908] [2024-11-12 20:41:21,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:21,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:41:21,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:21,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843156908] [2024-11-12 20:41:21,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843156908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:21,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:21,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:41:21,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054624217] [2024-11-12 20:41:21,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:21,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:41:21,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:21,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:41:21,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:41:21,174 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-12 20:41:21,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 114 transitions, 704 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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 20:41:21,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:21,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-12 20:41:21,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:22,421 INFO L124 PetriNetUnfolderBase]: 10798/17310 cut-off events. [2024-11-12 20:41:22,422 INFO L125 PetriNetUnfolderBase]: For 8586/8923 co-relation queries the response was YES. [2024-11-12 20:41:22,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41470 conditions, 17310 events. 10798/17310 cut-off events. For 8586/8923 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 120328 event pairs, 5144 based on Foata normal form. 262/17517 useless extension candidates. Maximal degree in co-relation 41247. Up to 6048 conditions per place. [2024-11-12 20:41:22,554 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 129 selfloop transitions, 19 changer transitions 1/165 dead transitions. [2024-11-12 20:41:22,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 165 transitions, 1172 flow [2024-11-12 20:41:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:41:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:41:22,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-11-12 20:41:22,555 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-12 20:41:22,556 INFO L175 Difference]: Start difference. First operand has 107 places, 114 transitions, 704 flow. Second operand 5 states and 205 transitions. [2024-11-12 20:41:22,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 165 transitions, 1172 flow [2024-11-12 20:41:22,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 1143 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:41:22,574 INFO L231 Difference]: Finished difference. Result has 108 places, 113 transitions, 709 flow [2024-11-12 20:41:22,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=709, PETRI_PLACES=108, PETRI_TRANSITIONS=113} [2024-11-12 20:41:22,574 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 50 predicate places. [2024-11-12 20:41:22,575 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 113 transitions, 709 flow [2024-11-12 20:41:22,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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 20:41:22,575 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:22,575 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-12 20:41:22,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 20:41:22,575 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:22,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:22,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1617871485, now seen corresponding path program 1 times [2024-11-12 20:41:22,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:22,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178969883] [2024-11-12 20:41:22,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:22,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:22,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:22,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178969883] [2024-11-12 20:41:22,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178969883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:22,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046140640] [2024-11-12 20:41:22,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:22,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:22,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:22,764 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 20:41:22,765 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 20:41:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:22,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 20:41:22,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:22,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:23,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046140640] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:23,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:23,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-12 20:41:23,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008420557] [2024-11-12 20:41:23,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:23,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 20:41:23,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:23,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 20:41:23,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-12 20:41:23,139 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-12 20:41:23,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 113 transitions, 709 flow. Second operand has 28 states, 28 states have (on average 19.071428571428573) internal successors, (534), 28 states have internal predecessors, (534), 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 20:41:23,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:23,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-12 20:41:23,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:24,813 INFO L124 PetriNetUnfolderBase]: 10723/17788 cut-off events. [2024-11-12 20:41:24,813 INFO L125 PetriNetUnfolderBase]: For 10565/10597 co-relation queries the response was YES. [2024-11-12 20:41:24,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43070 conditions, 17788 events. 10723/17788 cut-off events. For 10565/10597 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 130493 event pairs, 7960 based on Foata normal form. 42/17671 useless extension candidates. Maximal degree in co-relation 42138. Up to 14797 conditions per place. [2024-11-12 20:41:24,953 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 43 selfloop transitions, 126 changer transitions 0/183 dead transitions. [2024-11-12 20:41:24,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 183 transitions, 1621 flow [2024-11-12 20:41:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-12 20:41:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-12 20:41:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 628 transitions. [2024-11-12 20:41:24,955 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38957816377171217 [2024-11-12 20:41:24,955 INFO L175 Difference]: Start difference. First operand has 108 places, 113 transitions, 709 flow. Second operand 26 states and 628 transitions. [2024-11-12 20:41:24,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 183 transitions, 1621 flow [2024-11-12 20:41:24,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 183 transitions, 1588 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:41:24,981 INFO L231 Difference]: Finished difference. Result has 138 places, 183 transitions, 1586 flow [2024-11-12 20:41:24,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1586, PETRI_PLACES=138, PETRI_TRANSITIONS=183} [2024-11-12 20:41:24,981 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 80 predicate places. [2024-11-12 20:41:24,982 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 183 transitions, 1586 flow [2024-11-12 20:41:24,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 19.071428571428573) internal successors, (534), 28 states have internal predecessors, (534), 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 20:41:24,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:24,982 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:24,999 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 20:41:25,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:25,183 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:25,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:25,183 INFO L85 PathProgramCache]: Analyzing trace with hash -873364429, now seen corresponding path program 1 times [2024-11-12 20:41:25,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:25,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998688921] [2024-11-12 20:41:25,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:25,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:25,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:25,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998688921] [2024-11-12 20:41:25,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998688921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:25,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645853133] [2024-11-12 20:41:25,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:25,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:25,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:25,314 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 20:41:25,315 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 20:41:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:25,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:41:25,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:25,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:25,544 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:25,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645853133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:25,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:25,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-12 20:41:25,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034447306] [2024-11-12 20:41:25,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:25,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 20:41:25,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:25,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 20:41:25,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-12 20:41:25,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-12 20:41:25,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 183 transitions, 1586 flow. Second operand has 21 states, 21 states have (on average 17.952380952380953) internal successors, (377), 21 states have internal predecessors, (377), 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 20:41:25,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:25,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-12 20:41:25,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:31,145 INFO L124 PetriNetUnfolderBase]: 33758/52405 cut-off events. [2024-11-12 20:41:31,145 INFO L125 PetriNetUnfolderBase]: For 31274/32940 co-relation queries the response was YES. [2024-11-12 20:41:31,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128344 conditions, 52405 events. 33758/52405 cut-off events. For 31274/32940 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 413082 event pairs, 13312 based on Foata normal form. 870/52940 useless extension candidates. Maximal degree in co-relation 127706. Up to 7493 conditions per place. [2024-11-12 20:41:31,703 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 591 selfloop transitions, 268 changer transitions 40/912 dead transitions. [2024-11-12 20:41:31,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 912 transitions, 8602 flow [2024-11-12 20:41:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-12 20:41:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-12 20:41:31,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1182 transitions. [2024-11-12 20:41:31,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4056280027453672 [2024-11-12 20:41:31,708 INFO L175 Difference]: Start difference. First operand has 138 places, 183 transitions, 1586 flow. Second operand 47 states and 1182 transitions. [2024-11-12 20:41:31,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 912 transitions, 8602 flow [2024-11-12 20:41:31,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 912 transitions, 6929 flow, removed 600 selfloop flow, removed 12 redundant places. [2024-11-12 20:41:31,794 INFO L231 Difference]: Finished difference. Result has 184 places, 430 transitions, 3944 flow [2024-11-12 20:41:31,795 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3944, PETRI_PLACES=184, PETRI_TRANSITIONS=430} [2024-11-12 20:41:31,795 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 126 predicate places. [2024-11-12 20:41:31,796 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 430 transitions, 3944 flow [2024-11-12 20:41:31,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.952380952380953) internal successors, (377), 21 states have internal predecessors, (377), 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 20:41:31,796 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:31,796 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:31,810 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 20:41:31,996 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,SelfDestructingSolverStorable14 [2024-11-12 20:41:31,997 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:31,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:31,997 INFO L85 PathProgramCache]: Analyzing trace with hash -553337275, now seen corresponding path program 1 times [2024-11-12 20:41:31,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:31,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127266113] [2024-11-12 20:41:31,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:31,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:41:32,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:32,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127266113] [2024-11-12 20:41:32,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127266113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:32,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:32,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:41:32,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899508279] [2024-11-12 20:41:32,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:32,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:41:32,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:32,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:41:32,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:41:32,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-12 20:41:32,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 430 transitions, 3944 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 20:41:32,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:32,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-12 20:41:32,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:36,377 INFO L124 PetriNetUnfolderBase]: 28077/44707 cut-off events. [2024-11-12 20:41:36,377 INFO L125 PetriNetUnfolderBase]: For 47741/48743 co-relation queries the response was YES. [2024-11-12 20:41:37,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115286 conditions, 44707 events. 28077/44707 cut-off events. For 47741/48743 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 354169 event pairs, 12342 based on Foata normal form. 236/44865 useless extension candidates. Maximal degree in co-relation 114697. Up to 19610 conditions per place. [2024-11-12 20:41:37,186 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 414 selfloop transitions, 40 changer transitions 15/485 dead transitions. [2024-11-12 20:41:37,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 485 transitions, 5132 flow [2024-11-12 20:41:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:41:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:41:37,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2024-11-12 20:41:37,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6419354838709678 [2024-11-12 20:41:37,187 INFO L175 Difference]: Start difference. First operand has 184 places, 430 transitions, 3944 flow. Second operand 5 states and 199 transitions. [2024-11-12 20:41:37,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 485 transitions, 5132 flow [2024-11-12 20:41:37,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 485 transitions, 5055 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-11-12 20:41:37,299 INFO L231 Difference]: Finished difference. Result has 183 places, 426 transitions, 3900 flow [2024-11-12 20:41:37,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3869, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3900, PETRI_PLACES=183, PETRI_TRANSITIONS=426} [2024-11-12 20:41:37,300 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 125 predicate places. [2024-11-12 20:41:37,300 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 426 transitions, 3900 flow [2024-11-12 20:41:37,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 20:41:37,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:37,300 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:37,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 20:41:37,300 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:37,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:37,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1636799628, now seen corresponding path program 1 times [2024-11-12 20:41:37,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:37,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960189322] [2024-11-12 20:41:37,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:37,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:41:37,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:37,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960189322] [2024-11-12 20:41:37,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960189322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:37,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738416411] [2024-11-12 20:41:37,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:37,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:37,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:37,393 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 20:41:37,394 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 20:41:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:37,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:41:37,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:37,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:37,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738416411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:37,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:37,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-12 20:41:37,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731647444] [2024-11-12 20:41:37,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:37,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 20:41:37,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:37,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 20:41:37,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-12 20:41:37,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-12 20:41:37,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 426 transitions, 3900 flow. Second operand has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 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 20:41:37,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:37,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-12 20:41:37,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:41,919 INFO L124 PetriNetUnfolderBase]: 25309/38811 cut-off events. [2024-11-12 20:41:41,920 INFO L125 PetriNetUnfolderBase]: For 48412/49310 co-relation queries the response was YES. [2024-11-12 20:41:42,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103420 conditions, 38811 events. 25309/38811 cut-off events. For 48412/49310 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 287694 event pairs, 8714 based on Foata normal form. 882/39186 useless extension candidates. Maximal degree in co-relation 102816. Up to 8526 conditions per place. [2024-11-12 20:41:42,342 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 392 selfloop transitions, 194 changer transitions 12/610 dead transitions. [2024-11-12 20:41:42,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 610 transitions, 5926 flow [2024-11-12 20:41:42,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 20:41:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 20:41:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 466 transitions. [2024-11-12 20:41:42,344 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44212523719165087 [2024-11-12 20:41:42,344 INFO L175 Difference]: Start difference. First operand has 183 places, 426 transitions, 3900 flow. Second operand 17 states and 466 transitions. [2024-11-12 20:41:42,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 610 transitions, 5926 flow [2024-11-12 20:41:42,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 610 transitions, 5833 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:41:42,438 INFO L231 Difference]: Finished difference. Result has 196 places, 427 transitions, 4218 flow [2024-11-12 20:41:42,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4218, PETRI_PLACES=196, PETRI_TRANSITIONS=427} [2024-11-12 20:41:42,438 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 138 predicate places. [2024-11-12 20:41:42,439 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 427 transitions, 4218 flow [2024-11-12 20:41:42,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 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 20:41:42,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:42,439 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, 1] [2024-11-12 20:41:42,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 20:41:42,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 20:41:42,643 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:42,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:42,644 INFO L85 PathProgramCache]: Analyzing trace with hash -168509946, now seen corresponding path program 1 times [2024-11-12 20:41:42,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:42,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579311877] [2024-11-12 20:41:42,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:42,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:41:42,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:42,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579311877] [2024-11-12 20:41:42,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579311877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:42,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105813452] [2024-11-12 20:41:42,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:42,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:42,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:42,722 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 20:41:42,723 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 20:41:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:42,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:41:42,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:42,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:42,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105813452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:42,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:42,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2024-11-12 20:41:42,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976151245] [2024-11-12 20:41:42,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:42,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 20:41:42,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 20:41:42,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-12 20:41:43,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-12 20:41:43,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 427 transitions, 4218 flow. Second operand has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:43,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:43,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-12 20:41:43,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:46,723 INFO L124 PetriNetUnfolderBase]: 22650/34631 cut-off events. [2024-11-12 20:41:46,723 INFO L125 PetriNetUnfolderBase]: For 53814/54182 co-relation queries the response was YES. [2024-11-12 20:41:47,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95673 conditions, 34631 events. 22650/34631 cut-off events. For 53814/54182 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 249922 event pairs, 8754 based on Foata normal form. 748/34948 useless extension candidates. Maximal degree in co-relation 95042. Up to 7803 conditions per place. [2024-11-12 20:41:47,153 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 450 selfloop transitions, 163 changer transitions 32/656 dead transitions. [2024-11-12 20:41:47,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 656 transitions, 6910 flow [2024-11-12 20:41:47,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 20:41:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 20:41:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 473 transitions. [2024-11-12 20:41:47,154 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4487666034155598 [2024-11-12 20:41:47,154 INFO L175 Difference]: Start difference. First operand has 196 places, 427 transitions, 4218 flow. Second operand 17 states and 473 transitions. [2024-11-12 20:41:47,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 656 transitions, 6910 flow [2024-11-12 20:41:47,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 656 transitions, 6749 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-11-12 20:41:47,259 INFO L231 Difference]: Finished difference. Result has 203 places, 426 transitions, 4460 flow [2024-11-12 20:41:47,259 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4460, PETRI_PLACES=203, PETRI_TRANSITIONS=426} [2024-11-12 20:41:47,260 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 145 predicate places. [2024-11-12 20:41:47,260 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 426 transitions, 4460 flow [2024-11-12 20:41:47,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:47,260 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:47,260 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:47,273 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 20:41:47,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:47,461 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:47,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash -260381577, now seen corresponding path program 1 times [2024-11-12 20:41:47,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:47,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143677238] [2024-11-12 20:41:47,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:47,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 20:41:47,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:47,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143677238] [2024-11-12 20:41:47,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143677238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:47,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249213267] [2024-11-12 20:41:47,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:47,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:47,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:47,561 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 20:41:47,562 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 20:41:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:47,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:41:47,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:47,727 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 20:41:47,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 20:41:47,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249213267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:47,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:47,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-12 20:41:47,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055641204] [2024-11-12 20:41:47,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:47,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 20:41:47,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:47,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 20:41:47,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-12 20:41:47,875 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-12 20:41:47,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 426 transitions, 4460 flow. Second operand has 19 states, 19 states have (on average 18.36842105263158) internal successors, (349), 19 states have internal predecessors, (349), 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 20:41:47,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:47,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-12 20:41:47,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:54,481 INFO L124 PetriNetUnfolderBase]: 42605/64528 cut-off events. [2024-11-12 20:41:54,481 INFO L125 PetriNetUnfolderBase]: For 109402/110136 co-relation queries the response was YES. [2024-11-12 20:41:55,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180402 conditions, 64528 events. 42605/64528 cut-off events. For 109402/110136 co-relation queries the response was YES. Maximal size of possible extension queue 1814. Compared 492051 event pairs, 13463 based on Foata normal form. 854/65185 useless extension candidates. Maximal degree in co-relation 179753. Up to 12343 conditions per place. [2024-11-12 20:41:55,339 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 274 selfloop transitions, 348 changer transitions 20/653 dead transitions. [2024-11-12 20:41:55,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 653 transitions, 6848 flow [2024-11-12 20:41:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:41:55,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:41:55,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 428 transitions. [2024-11-12 20:41:55,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4930875576036866 [2024-11-12 20:41:55,341 INFO L175 Difference]: Start difference. First operand has 203 places, 426 transitions, 4460 flow. Second operand 14 states and 428 transitions. [2024-11-12 20:41:55,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 653 transitions, 6848 flow [2024-11-12 20:41:55,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 653 transitions, 6574 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-11-12 20:41:55,533 INFO L231 Difference]: Finished difference. Result has 206 places, 431 transitions, 5003 flow [2024-11-12 20:41:55,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=4272, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5003, PETRI_PLACES=206, PETRI_TRANSITIONS=431} [2024-11-12 20:41:55,534 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 148 predicate places. [2024-11-12 20:41:55,534 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 431 transitions, 5003 flow [2024-11-12 20:41:55,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.36842105263158) internal successors, (349), 19 states have internal predecessors, (349), 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 20:41:55,535 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:55,535 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:55,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 20:41:55,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:55,735 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:41:55,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash -754914406, now seen corresponding path program 2 times [2024-11-12 20:41:55,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:55,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324961029] [2024-11-12 20:41:55,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:55,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 20:41:55,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:55,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324961029] [2024-11-12 20:41:55,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324961029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:55,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590461740] [2024-11-12 20:41:55,787 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:41:55,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:55,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:55,789 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 20:41:55,790 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 20:41:55,859 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:41:55,859 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:41:55,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:41:55,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:55,891 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 20:41:55,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:55,919 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 20:41:55,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590461740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:55,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:55,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2024-11-12 20:41:55,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416346954] [2024-11-12 20:41:55,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:55,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:41:55,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:55,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:41:55,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:41:55,925 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-12 20:41:55,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 431 transitions, 5003 flow. Second operand has 9 states, 9 states have (on average 25.333333333333332) internal successors, (228), 9 states have internal predecessors, (228), 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 20:41:55,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:55,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-12 20:41:55,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand