./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 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/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-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:20:48,932 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:20:49,008 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:20:49,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:20:49,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:20:49,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:20:49,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:20:49,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:20:49,043 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:20:49,044 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:20:49,044 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:20:49,044 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:20:49,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:20:49,047 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:20:49,048 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:20:49,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:20:49,048 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:20:49,048 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:20:49,049 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:20:49,049 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:20:49,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:20:49,050 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:20:49,050 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:20:49,050 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:20:49,050 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:20:49,051 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:20:49,051 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:20:49,051 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:20:49,051 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:20:49,052 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:20:49,052 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:20:49,052 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:20:49,052 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:20:49,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:20:49,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:20:49,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:20:49,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:20:49,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:20:49,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:20:49,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:20:49,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:20:49,055 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:20:49,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:20:49,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:20:49,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2024-11-10 22:20:49,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:20:49,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:20:49,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:20:49,401 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:20:49,402 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:20:49,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-10 22:20:50,731 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:20:50,920 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:20:50,921 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-10 22:20:50,929 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/926f2fe3d/28a56930d0744ccb8b26710bad9c7efe/FLAGfadfd729e [2024-11-10 22:20:50,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/926f2fe3d/28a56930d0744ccb8b26710bad9c7efe [2024-11-10 22:20:50,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:20:50,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:20:50,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:20:50,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:20:50,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:20:50,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:20:50" (1/1) ... [2024-11-10 22:20:50,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff18570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:50, skipping insertion in model container [2024-11-10 22:20:50,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:20:50" (1/1) ... [2024-11-10 22:20:50,973 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:20:51,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:20:51,230 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:20:51,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:20:51,274 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:20:51,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:51 WrapperNode [2024-11-10 22:20:51,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:20:51,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:20:51,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:20:51,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:20:51,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:51" (1/1) ... [2024-11-10 22:20:51,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:51" (1/1) ... [2024-11-10 22:20:51,329 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 199 [2024-11-10 22:20:51,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:20:51,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:20:51,330 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:20:51,330 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:20:51,340 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:51" (1/1) ... [2024-11-10 22:20:51,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:51" (1/1) ... [2024-11-10 22:20:51,343 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:51" (1/1) ... [2024-11-10 22:20:51,363 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]. [2024-11-10 22:20:51,364 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:51" (1/1) ... [2024-11-10 22:20:51,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:51" (1/1) ... [2024-11-10 22:20:51,376 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:51" (1/1) ... [2024-11-10 22:20:51,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:51" (1/1) ... [2024-11-10 22:20:51,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:51" (1/1) ... [2024-11-10 22:20:51,380 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:51" (1/1) ... [2024-11-10 22:20:51,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:20:51,383 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:20:51,384 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:20:51,384 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:20:51,385 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:51" (1/1) ... [2024-11-10 22:20:51,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:20:51,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:20:51,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:20:51,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:20:51,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:20:51,476 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:20:51,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:20:51,476 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:20:51,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:20:51,476 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:20:51,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:20:51,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:20:51,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:20:51,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:20:51,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:20:51,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:20:51,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:20:51,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:20:51,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:20:51,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:20:51,479 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:20:51,617 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:20:51,620 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:20:52,010 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:20:52,010 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:20:52,344 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:20:52,345 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:20:52,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:20:52 BoogieIcfgContainer [2024-11-10 22:20:52,346 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:20:52,348 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:20:52,348 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:20:52,353 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:20:52,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:20:50" (1/3) ... [2024-11-10 22:20:52,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585b665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:20:52, skipping insertion in model container [2024-11-10 22:20:52,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:51" (2/3) ... [2024-11-10 22:20:52,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585b665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:20:52, skipping insertion in model container [2024-11-10 22:20:52,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:20:52" (3/3) ... [2024-11-10 22:20:52,358 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2024-11-10 22:20:52,376 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:20:52,376 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-10 22:20:52,376 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:20:52,438 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:20:52,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 77 transitions, 175 flow [2024-11-10 22:20:52,508 INFO L124 PetriNetUnfolderBase]: 15/74 cut-off events. [2024-11-10 22:20:52,509 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:20:52,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 74 events. 15/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 159 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 60. Up to 3 conditions per place. [2024-11-10 22:20:52,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 77 transitions, 175 flow [2024-11-10 22:20:52,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 72 transitions, 159 flow [2024-11-10 22:20:52,527 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:20:52,533 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;@21a88265, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:20:52,533 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-10 22:20:52,538 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:20:52,538 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:20:52,538 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:20:52,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:20:52,539 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:20:52,539 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:20:52,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:20:52,545 INFO L85 PathProgramCache]: Analyzing trace with hash 20690671, now seen corresponding path program 1 times [2024-11-10 22:20:52,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:20:52,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184209094] [2024-11-10 22:20:52,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:20:52,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:20:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:20:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:20:52,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:20:52,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184209094] [2024-11-10 22:20:52,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184209094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:20:52,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:20:52,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:20:52,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216978846] [2024-11-10 22:20:52,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:20:52,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:20:52,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:20:52,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:20:52,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:20:52,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 77 [2024-11-10 22:20:53,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 72 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:53,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:20:53,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 77 [2024-11-10 22:20:53,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:20:53,546 INFO L124 PetriNetUnfolderBase]: 1540/2647 cut-off events. [2024-11-10 22:20:53,546 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-10 22:20:53,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4747 conditions, 2647 events. 1540/2647 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 16627 event pairs, 930 based on Foata normal form. 468/2643 useless extension candidates. Maximal degree in co-relation 4362. Up to 1960 conditions per place. [2024-11-10 22:20:53,579 INFO L140 encePairwiseOnDemand]: 55/77 looper letters, 38 selfloop transitions, 10 changer transitions 0/75 dead transitions. [2024-11-10 22:20:53,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 261 flow [2024-11-10 22:20:53,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:20:53,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:20:53,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-10 22:20:53,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5941558441558441 [2024-11-10 22:20:53,594 INFO L175 Difference]: Start difference. First operand has 67 places, 72 transitions, 159 flow. Second operand 4 states and 183 transitions. [2024-11-10 22:20:53,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 261 flow [2024-11-10 22:20:53,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 75 transitions, 252 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:20:53,604 INFO L231 Difference]: Finished difference. Result has 68 places, 75 transitions, 226 flow [2024-11-10 22:20:53,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=68, PETRI_TRANSITIONS=75} [2024-11-10 22:20:53,612 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2024-11-10 22:20:53,612 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 75 transitions, 226 flow [2024-11-10 22:20:53,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:53,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:20:53,613 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:20:53,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:20:53,614 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:20:53,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:20:53,614 INFO L85 PathProgramCache]: Analyzing trace with hash -22794488, now seen corresponding path program 1 times [2024-11-10 22:20:53,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:20:53,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45747250] [2024-11-10 22:20:53,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:20:53,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:20:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:20:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:20:53,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:20:53,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45747250] [2024-11-10 22:20:53,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45747250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:20:53,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597485592] [2024-11-10 22:20:53,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:20:53,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:20:53,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:20:53,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:20:53,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:20:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:20:53,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:20:53,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:20:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:20:53,891 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:20:53,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597485592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:20:53,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:20:53,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:20:53,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824989655] [2024-11-10 22:20:53,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:20:53,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:20:53,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:20:53,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:20:53,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:20:53,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 77 [2024-11-10 22:20:53,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 75 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:53,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:20:53,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 77 [2024-11-10 22:20:53,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:20:54,280 INFO L124 PetriNetUnfolderBase]: 1540/2644 cut-off events. [2024-11-10 22:20:54,281 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-10 22:20:54,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4724 conditions, 2644 events. 1540/2644 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 16622 event pairs, 930 based on Foata normal form. 3/2175 useless extension candidates. Maximal degree in co-relation 4645. Up to 1945 conditions per place. [2024-11-10 22:20:54,298 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 28 selfloop transitions, 17 changer transitions 0/72 dead transitions. [2024-11-10 22:20:54,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 72 transitions, 304 flow [2024-11-10 22:20:54,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:20:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:20:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2024-11-10 22:20:54,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4935064935064935 [2024-11-10 22:20:54,301 INFO L175 Difference]: Start difference. First operand has 68 places, 75 transitions, 226 flow. Second operand 6 states and 228 transitions. [2024-11-10 22:20:54,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 72 transitions, 304 flow [2024-11-10 22:20:54,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:20:54,306 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 248 flow [2024-11-10 22:20:54,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-11-10 22:20:54,307 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2024-11-10 22:20:54,308 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 248 flow [2024-11-10 22:20:54,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:54,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:20:54,309 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:20:54,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 22:20:54,509 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 [2024-11-10 22:20:54,510 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:20:54,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:20:54,512 INFO L85 PathProgramCache]: Analyzing trace with hash -706628562, now seen corresponding path program 1 times [2024-11-10 22:20:54,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:20:54,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414748321] [2024-11-10 22:20:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:20:54,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:20:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:20:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:20:54,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:20:54,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414748321] [2024-11-10 22:20:54,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414748321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:20:54,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727173476] [2024-11-10 22:20:54,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:20:54,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:20:54,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:20:54,667 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:20:54,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:20:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:20:54,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:20:54,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:20:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:20:54,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:20:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:20:54,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727173476] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:20:54,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:20:54,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:20:54,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33040865] [2024-11-10 22:20:54,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:20:54,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:20:54,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:20:54,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:20:54,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:20:54,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 77 [2024-11-10 22:20:54,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 248 flow. Second operand has 12 states, 12 states have (on average 31.083333333333332) internal successors, (373), 12 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:54,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:20:54,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 77 [2024-11-10 22:20:54,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:20:55,314 INFO L124 PetriNetUnfolderBase]: 1549/2698 cut-off events. [2024-11-10 22:20:55,315 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2024-11-10 22:20:55,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4883 conditions, 2698 events. 1549/2698 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 17104 event pairs, 930 based on Foata normal form. 9/2238 useless extension candidates. Maximal degree in co-relation 4647. Up to 1960 conditions per place. [2024-11-10 22:20:55,335 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 35 selfloop transitions, 37 changer transitions 0/99 dead transitions. [2024-11-10 22:20:55,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 99 transitions, 566 flow [2024-11-10 22:20:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:20:55,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:20:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 381 transitions. [2024-11-10 22:20:55,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4948051948051948 [2024-11-10 22:20:55,339 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 248 flow. Second operand 10 states and 381 transitions. [2024-11-10 22:20:55,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 99 transitions, 566 flow [2024-11-10 22:20:55,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 99 transitions, 483 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-10 22:20:55,343 INFO L231 Difference]: Finished difference. Result has 77 places, 99 transitions, 463 flow [2024-11-10 22:20:55,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=463, PETRI_PLACES=77, PETRI_TRANSITIONS=99} [2024-11-10 22:20:55,346 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2024-11-10 22:20:55,346 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 99 transitions, 463 flow [2024-11-10 22:20:55,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.083333333333332) internal successors, (373), 12 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:55,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:20:55,347 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:20:55,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 22:20:55,551 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 [2024-11-10 22:20:55,552 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:20:55,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:20:55,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1339302171, now seen corresponding path program 1 times [2024-11-10 22:20:55,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:20:55,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876641680] [2024-11-10 22:20:55,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:20:55,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:20:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:20:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:20:55,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:20:55,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876641680] [2024-11-10 22:20:55,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876641680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:20:55,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:20:55,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:20:55,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861853612] [2024-11-10 22:20:55,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:20:55,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:20:55,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:20:55,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:20:55,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:20:55,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 77 [2024-11-10 22:20:55,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 99 transitions, 463 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:55,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:20:55,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 77 [2024-11-10 22:20:55,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:20:56,120 INFO L124 PetriNetUnfolderBase]: 2890/4661 cut-off events. [2024-11-10 22:20:56,121 INFO L125 PetriNetUnfolderBase]: For 260/260 co-relation queries the response was YES. [2024-11-10 22:20:56,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8793 conditions, 4661 events. 2890/4661 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 29894 event pairs, 613 based on Foata normal form. 86/4024 useless extension candidates. Maximal degree in co-relation 8689. Up to 2214 conditions per place. [2024-11-10 22:20:56,156 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 105 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2024-11-10 22:20:56,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 136 transitions, 761 flow [2024-11-10 22:20:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:20:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:20:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-11-10 22:20:56,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-10 22:20:56,159 INFO L175 Difference]: Start difference. First operand has 77 places, 99 transitions, 463 flow. Second operand 4 states and 210 transitions. [2024-11-10 22:20:56,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 136 transitions, 761 flow [2024-11-10 22:20:56,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 136 transitions, 724 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-10 22:20:56,165 INFO L231 Difference]: Finished difference. Result has 80 places, 101 transitions, 448 flow [2024-11-10 22:20:56,165 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=448, PETRI_PLACES=80, PETRI_TRANSITIONS=101} [2024-11-10 22:20:56,166 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-11-10 22:20:56,166 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 101 transitions, 448 flow [2024-11-10 22:20:56,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:56,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:20:56,167 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:20:56,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:20:56,167 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:20:56,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:20:56,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2120879230, now seen corresponding path program 1 times [2024-11-10 22:20:56,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:20:56,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773660331] [2024-11-10 22:20:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:20:56,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:20:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:20:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:20:56,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:20:56,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773660331] [2024-11-10 22:20:56,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773660331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:20:56,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:20:56,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:20:56,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119234488] [2024-11-10 22:20:56,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:20:56,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:20:56,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:20:56,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:20:56,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:20:56,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 77 [2024-11-10 22:20:56,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 101 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:56,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:20:56,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 77 [2024-11-10 22:20:56,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:20:56,635 INFO L124 PetriNetUnfolderBase]: 3053/5027 cut-off events. [2024-11-10 22:20:56,635 INFO L125 PetriNetUnfolderBase]: For 805/843 co-relation queries the response was YES. [2024-11-10 22:20:56,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9954 conditions, 5027 events. 3053/5027 cut-off events. For 805/843 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 33144 event pairs, 1338 based on Foata normal form. 152/4484 useless extension candidates. Maximal degree in co-relation 9852. Up to 2851 conditions per place. [2024-11-10 22:20:56,709 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 85 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2024-11-10 22:20:56,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 116 transitions, 668 flow [2024-11-10 22:20:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:20:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:20:56,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2024-11-10 22:20:56,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6006493506493507 [2024-11-10 22:20:56,711 INFO L175 Difference]: Start difference. First operand has 80 places, 101 transitions, 448 flow. Second operand 4 states and 185 transitions. [2024-11-10 22:20:56,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 116 transitions, 668 flow [2024-11-10 22:20:56,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 116 transitions, 665 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:20:56,715 INFO L231 Difference]: Finished difference. Result has 81 places, 100 transitions, 450 flow [2024-11-10 22:20:56,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=450, PETRI_PLACES=81, PETRI_TRANSITIONS=100} [2024-11-10 22:20:56,716 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 14 predicate places. [2024-11-10 22:20:56,716 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 100 transitions, 450 flow [2024-11-10 22:20:56,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:56,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:20:56,717 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:20:56,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:20:56,717 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:20:56,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:20:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1322747347, now seen corresponding path program 1 times [2024-11-10 22:20:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:20:56,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594501845] [2024-11-10 22:20:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:20:56,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:20:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:20:56,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:20:56,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:20:56,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594501845] [2024-11-10 22:20:56,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594501845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:20:56,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:20:56,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:20:56,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616430728] [2024-11-10 22:20:56,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:20:56,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:20:56,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:20:56,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:20:56,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:20:56,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 77 [2024-11-10 22:20:56,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 100 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:56,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:20:56,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 77 [2024-11-10 22:20:56,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:20:57,383 INFO L124 PetriNetUnfolderBase]: 4375/7087 cut-off events. [2024-11-10 22:20:57,383 INFO L125 PetriNetUnfolderBase]: For 1531/1681 co-relation queries the response was YES. [2024-11-10 22:20:57,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14641 conditions, 7087 events. 4375/7087 cut-off events. For 1531/1681 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 47666 event pairs, 1017 based on Foata normal form. 152/6784 useless extension candidates. Maximal degree in co-relation 14539. Up to 3161 conditions per place. [2024-11-10 22:20:57,428 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 107 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2024-11-10 22:20:57,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 138 transitions, 777 flow [2024-11-10 22:20:57,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:20:57,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:20:57,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 205 transitions. [2024-11-10 22:20:57,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6655844155844156 [2024-11-10 22:20:57,430 INFO L175 Difference]: Start difference. First operand has 81 places, 100 transitions, 450 flow. Second operand 4 states and 205 transitions. [2024-11-10 22:20:57,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 138 transitions, 777 flow [2024-11-10 22:20:57,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 138 transitions, 767 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:20:57,435 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 464 flow [2024-11-10 22:20:57,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=464, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2024-11-10 22:20:57,436 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 16 predicate places. [2024-11-10 22:20:57,436 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 464 flow [2024-11-10 22:20:57,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:57,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:20:57,437 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:20:57,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:20:57,437 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:20:57,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:20:57,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1645256539, now seen corresponding path program 1 times [2024-11-10 22:20:57,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:20:57,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339324068] [2024-11-10 22:20:57,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:20:57,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:20:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:20:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:20:57,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:20:57,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339324068] [2024-11-10 22:20:57,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339324068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:20:57,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:20:57,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:20:57,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994818632] [2024-11-10 22:20:57,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:20:57,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:20:57,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:20:57,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:20:57,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:20:57,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 77 [2024-11-10 22:20:57,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:57,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:20:57,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 77 [2024-11-10 22:20:57,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:20:58,574 INFO L124 PetriNetUnfolderBase]: 7559/11871 cut-off events. [2024-11-10 22:20:58,575 INFO L125 PetriNetUnfolderBase]: For 3259/3649 co-relation queries the response was YES. [2024-11-10 22:20:58,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25336 conditions, 11871 events. 7559/11871 cut-off events. For 3259/3649 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 81373 event pairs, 1880 based on Foata normal form. 224/11234 useless extension candidates. Maximal degree in co-relation 25232. Up to 5561 conditions per place. [2024-11-10 22:20:58,664 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 111 selfloop transitions, 3 changer transitions 0/141 dead transitions. [2024-11-10 22:20:58,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 141 transitions, 816 flow [2024-11-10 22:20:58,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:20:58,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:20:58,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2024-11-10 22:20:58,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6623376623376623 [2024-11-10 22:20:58,666 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 464 flow. Second operand 4 states and 204 transitions. [2024-11-10 22:20:58,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 141 transitions, 816 flow [2024-11-10 22:20:58,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 141 transitions, 812 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:20:58,675 INFO L231 Difference]: Finished difference. Result has 87 places, 104 transitions, 484 flow [2024-11-10 22:20:58,676 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=484, PETRI_PLACES=87, PETRI_TRANSITIONS=104} [2024-11-10 22:20:58,676 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 20 predicate places. [2024-11-10 22:20:58,677 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 104 transitions, 484 flow [2024-11-10 22:20:58,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:58,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:20:58,677 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:20:58,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:20:58,678 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:20:58,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:20:58,678 INFO L85 PathProgramCache]: Analyzing trace with hash -633655229, now seen corresponding path program 2 times [2024-11-10 22:20:58,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:20:58,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853990850] [2024-11-10 22:20:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:20:58,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:20:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:20:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:20:58,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:20:58,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853990850] [2024-11-10 22:20:58,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853990850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:20:58,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422095351] [2024-11-10 22:20:58,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:20:58,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:20:58,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:20:58,870 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:20:58,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:20:58,943 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:20:58,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:20:58,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:20:58,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:20:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:20:59,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:20:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:20:59,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422095351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:20:59,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:20:59,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:20:59,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496920610] [2024-11-10 22:20:59,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:20:59,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:20:59,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:20:59,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:20:59,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:20:59,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 77 [2024-11-10 22:20:59,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 104 transitions, 484 flow. Second operand has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:20:59,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:20:59,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 77 [2024-11-10 22:20:59,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:00,428 INFO L124 PetriNetUnfolderBase]: 6490/11068 cut-off events. [2024-11-10 22:21:00,429 INFO L125 PetriNetUnfolderBase]: For 3923/3971 co-relation queries the response was YES. [2024-11-10 22:21:00,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24521 conditions, 11068 events. 6490/11068 cut-off events. For 3923/3971 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 83380 event pairs, 4480 based on Foata normal form. 4/10745 useless extension candidates. Maximal degree in co-relation 24365. Up to 8699 conditions per place. [2024-11-10 22:21:00,493 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 44 selfloop transitions, 60 changer transitions 0/127 dead transitions. [2024-11-10 22:21:00,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 127 transitions, 771 flow [2024-11-10 22:21:00,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:21:00,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:21:00,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 750 transitions. [2024-11-10 22:21:00,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40584415584415584 [2024-11-10 22:21:00,497 INFO L175 Difference]: Start difference. First operand has 87 places, 104 transitions, 484 flow. Second operand 24 states and 750 transitions. [2024-11-10 22:21:00,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 127 transitions, 771 flow [2024-11-10 22:21:00,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 127 transitions, 769 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:21:00,507 INFO L231 Difference]: Finished difference. Result has 111 places, 122 transitions, 706 flow [2024-11-10 22:21:00,508 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=706, PETRI_PLACES=111, PETRI_TRANSITIONS=122} [2024-11-10 22:21:00,511 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 44 predicate places. [2024-11-10 22:21:00,511 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 122 transitions, 706 flow [2024-11-10 22:21:00,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:00,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:00,512 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:00,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:21:00,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:00,716 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:21:00,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:00,717 INFO L85 PathProgramCache]: Analyzing trace with hash 840782439, now seen corresponding path program 1 times [2024-11-10 22:21:00,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:00,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794025249] [2024-11-10 22:21:00,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:00,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:21:00,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:00,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794025249] [2024-11-10 22:21:00,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794025249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:00,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:21:00,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:21:00,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648991928] [2024-11-10 22:21:00,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:00,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:21:00,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:00,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:21:00,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:21:00,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-11-10 22:21:00,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 122 transitions, 706 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:00,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:00,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-11-10 22:21:00,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:01,900 INFO L124 PetriNetUnfolderBase]: 7659/13219 cut-off events. [2024-11-10 22:21:01,900 INFO L125 PetriNetUnfolderBase]: For 4922/4972 co-relation queries the response was YES. [2024-11-10 22:21:01,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29069 conditions, 13219 events. 7659/13219 cut-off events. For 4922/4972 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 103453 event pairs, 5324 based on Foata normal form. 193/13070 useless extension candidates. Maximal degree in co-relation 28958. Up to 8752 conditions per place. [2024-11-10 22:21:01,978 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 158 selfloop transitions, 11 changer transitions 0/194 dead transitions. [2024-11-10 22:21:01,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 194 transitions, 1480 flow [2024-11-10 22:21:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:21:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:21:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2024-11-10 22:21:01,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625974025974026 [2024-11-10 22:21:01,980 INFO L175 Difference]: Start difference. First operand has 111 places, 122 transitions, 706 flow. Second operand 5 states and 241 transitions. [2024-11-10 22:21:01,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 194 transitions, 1480 flow [2024-11-10 22:21:01,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 194 transitions, 1303 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-11-10 22:21:01,993 INFO L231 Difference]: Finished difference. Result has 109 places, 131 transitions, 704 flow [2024-11-10 22:21:01,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=704, PETRI_PLACES=109, PETRI_TRANSITIONS=131} [2024-11-10 22:21:01,994 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 42 predicate places. [2024-11-10 22:21:01,994 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 131 transitions, 704 flow [2024-11-10 22:21:01,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:01,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:01,994 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:01,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:21:01,995 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:21:01,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:01,995 INFO L85 PathProgramCache]: Analyzing trace with hash -461916073, now seen corresponding path program 1 times [2024-11-10 22:21:01,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:01,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634345936] [2024-11-10 22:21:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:01,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:21:02,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:02,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634345936] [2024-11-10 22:21:02,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634345936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:02,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:21:02,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:21:02,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208142677] [2024-11-10 22:21:02,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:02,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:21:02,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:02,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:21:02,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:21:02,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-11-10 22:21:02,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 131 transitions, 704 flow. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:02,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:02,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-11-10 22:21:02,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:03,444 INFO L124 PetriNetUnfolderBase]: 8576/14740 cut-off events. [2024-11-10 22:21:03,444 INFO L125 PetriNetUnfolderBase]: For 5633/6047 co-relation queries the response was YES. [2024-11-10 22:21:03,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32744 conditions, 14740 events. 8576/14740 cut-off events. For 5633/6047 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 115945 event pairs, 3500 based on Foata normal form. 247/14689 useless extension candidates. Maximal degree in co-relation 32616. Up to 5043 conditions per place. [2024-11-10 22:21:03,517 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 162 selfloop transitions, 15 changer transitions 0/202 dead transitions. [2024-11-10 22:21:03,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 202 transitions, 1375 flow [2024-11-10 22:21:03,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:21:03,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:21:03,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 286 transitions. [2024-11-10 22:21:03,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-10 22:21:03,519 INFO L175 Difference]: Start difference. First operand has 109 places, 131 transitions, 704 flow. Second operand 6 states and 286 transitions. [2024-11-10 22:21:03,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 202 transitions, 1375 flow [2024-11-10 22:21:03,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 202 transitions, 1373 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:21:03,534 INFO L231 Difference]: Finished difference. Result has 115 places, 135 transitions, 785 flow [2024-11-10 22:21:03,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=785, PETRI_PLACES=115, PETRI_TRANSITIONS=135} [2024-11-10 22:21:03,535 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 48 predicate places. [2024-11-10 22:21:03,535 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 135 transitions, 785 flow [2024-11-10 22:21:03,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:03,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:03,536 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:03,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:21:03,536 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:21:03,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:03,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1173548910, now seen corresponding path program 1 times [2024-11-10 22:21:03,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:03,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994581021] [2024-11-10 22:21:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:03,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:21:03,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:03,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994581021] [2024-11-10 22:21:03,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994581021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:03,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:21:03,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:21:03,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010730979] [2024-11-10 22:21:03,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:03,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:21:03,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:03,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:21:03,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:21:03,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-11-10 22:21:03,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 135 transitions, 785 flow. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:03,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:03,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-11-10 22:21:03,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:04,730 INFO L124 PetriNetUnfolderBase]: 7826/13446 cut-off events. [2024-11-10 22:21:04,730 INFO L125 PetriNetUnfolderBase]: For 6343/6649 co-relation queries the response was YES. [2024-11-10 22:21:04,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30778 conditions, 13446 events. 7826/13446 cut-off events. For 6343/6649 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 104005 event pairs, 3339 based on Foata normal form. 39/13190 useless extension candidates. Maximal degree in co-relation 30646. Up to 5928 conditions per place. [2024-11-10 22:21:04,963 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 157 selfloop transitions, 15 changer transitions 1/198 dead transitions. [2024-11-10 22:21:04,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 198 transitions, 1399 flow [2024-11-10 22:21:04,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:21:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:21:04,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 284 transitions. [2024-11-10 22:21:04,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6147186147186147 [2024-11-10 22:21:04,972 INFO L175 Difference]: Start difference. First operand has 115 places, 135 transitions, 785 flow. Second operand 6 states and 284 transitions. [2024-11-10 22:21:04,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 198 transitions, 1399 flow [2024-11-10 22:21:04,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 198 transitions, 1385 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:21:04,996 INFO L231 Difference]: Finished difference. Result has 119 places, 135 transitions, 809 flow [2024-11-10 22:21:04,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=809, PETRI_PLACES=119, PETRI_TRANSITIONS=135} [2024-11-10 22:21:04,998 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 52 predicate places. [2024-11-10 22:21:04,998 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 135 transitions, 809 flow [2024-11-10 22:21:04,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:04,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:04,999 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:05,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 22:21:05,000 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:21:05,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:05,001 INFO L85 PathProgramCache]: Analyzing trace with hash -798858561, now seen corresponding path program 1 times [2024-11-10 22:21:05,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:05,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676489438] [2024-11-10 22:21:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:05,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:21:05,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:05,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676489438] [2024-11-10 22:21:05,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676489438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:05,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:21:05,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:21:05,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800482204] [2024-11-10 22:21:05,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:05,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:21:05,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:05,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:21:05,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:21:05,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-11-10 22:21:05,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 135 transitions, 809 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:05,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:05,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-11-10 22:21:05,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:06,267 INFO L124 PetriNetUnfolderBase]: 6969/12088 cut-off events. [2024-11-10 22:21:06,268 INFO L125 PetriNetUnfolderBase]: For 6630/6685 co-relation queries the response was YES. [2024-11-10 22:21:06,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28138 conditions, 12088 events. 6969/12088 cut-off events. For 6630/6685 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 92770 event pairs, 4839 based on Foata normal form. 45/11808 useless extension candidates. Maximal degree in co-relation 28003. Up to 9102 conditions per place. [2024-11-10 22:21:06,337 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 152 selfloop transitions, 12 changer transitions 3/192 dead transitions. [2024-11-10 22:21:06,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 192 transitions, 1451 flow [2024-11-10 22:21:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:21:06,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:21:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2024-11-10 22:21:06,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6155844155844156 [2024-11-10 22:21:06,341 INFO L175 Difference]: Start difference. First operand has 119 places, 135 transitions, 809 flow. Second operand 5 states and 237 transitions. [2024-11-10 22:21:06,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 192 transitions, 1451 flow [2024-11-10 22:21:06,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 192 transitions, 1423 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:21:06,357 INFO L231 Difference]: Finished difference. Result has 120 places, 134 transitions, 803 flow [2024-11-10 22:21:06,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=803, PETRI_PLACES=120, PETRI_TRANSITIONS=134} [2024-11-10 22:21:06,359 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 53 predicate places. [2024-11-10 22:21:06,359 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 134 transitions, 803 flow [2024-11-10 22:21:06,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:06,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:06,359 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1] [2024-11-10 22:21:06,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 22:21:06,360 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:21:06,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:06,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1936899392, now seen corresponding path program 1 times [2024-11-10 22:21:06,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:06,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24739780] [2024-11-10 22:21:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:06,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:06,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:06,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24739780] [2024-11-10 22:21:06,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24739780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:06,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898006067] [2024-11-10 22:21:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:06,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:06,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:06,566 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:21:06,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:21:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:06,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 22:21:06,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:06,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:06,923 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:06,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898006067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:06,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:06,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-10 22:21:06,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254986189] [2024-11-10 22:21:06,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:06,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 22:21:06,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:06,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 22:21:06,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-10 22:21:07,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 77 [2024-11-10 22:21:07,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 134 transitions, 803 flow. Second operand has 28 states, 28 states have (on average 31.071428571428573) internal successors, (870), 28 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:07,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:07,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 77 [2024-11-10 22:21:07,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:08,696 INFO L124 PetriNetUnfolderBase]: 7011/12445 cut-off events. [2024-11-10 22:21:08,696 INFO L125 PetriNetUnfolderBase]: For 8425/8434 co-relation queries the response was YES. [2024-11-10 22:21:08,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29387 conditions, 12445 events. 7011/12445 cut-off events. For 8425/8434 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 97432 event pairs, 4839 based on Foata normal form. 42/12099 useless extension candidates. Maximal degree in co-relation 29035. Up to 9499 conditions per place. [2024-11-10 22:21:08,786 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 40 selfloop transitions, 127 changer transitions 0/204 dead transitions. [2024-11-10 22:21:08,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 204 transitions, 1718 flow [2024-11-10 22:21:08,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 22:21:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-10 22:21:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 937 transitions. [2024-11-10 22:21:08,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.468031968031968 [2024-11-10 22:21:08,795 INFO L175 Difference]: Start difference. First operand has 120 places, 134 transitions, 803 flow. Second operand 26 states and 937 transitions. [2024-11-10 22:21:08,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 204 transitions, 1718 flow [2024-11-10 22:21:08,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 204 transitions, 1680 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:21:08,824 INFO L231 Difference]: Finished difference. Result has 148 places, 204 transitions, 1684 flow [2024-11-10 22:21:08,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1684, PETRI_PLACES=148, PETRI_TRANSITIONS=204} [2024-11-10 22:21:08,827 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 81 predicate places. [2024-11-10 22:21:08,828 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 204 transitions, 1684 flow [2024-11-10 22:21:08,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 31.071428571428573) internal successors, (870), 28 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:08,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:08,829 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:08,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:21:09,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:09,035 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:21:09,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:09,035 INFO L85 PathProgramCache]: Analyzing trace with hash 126359625, now seen corresponding path program 1 times [2024-11-10 22:21:09,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:09,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364640348] [2024-11-10 22:21:09,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:09,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 22:21:09,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:09,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364640348] [2024-11-10 22:21:09,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364640348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:09,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:21:09,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:21:09,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053475473] [2024-11-10 22:21:09,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:09,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:21:09,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:09,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:21:09,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:21:09,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-11-10 22:21:09,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 204 transitions, 1684 flow. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:09,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:09,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-11-10 22:21:09,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:10,695 INFO L124 PetriNetUnfolderBase]: 7942/14039 cut-off events. [2024-11-10 22:21:10,695 INFO L125 PetriNetUnfolderBase]: For 9909/10278 co-relation queries the response was YES. [2024-11-10 22:21:10,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33319 conditions, 14039 events. 7942/14039 cut-off events. For 9909/10278 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 110999 event pairs, 3376 based on Foata normal form. 213/13931 useless extension candidates. Maximal degree in co-relation 32947. Up to 4947 conditions per place. [2024-11-10 22:21:10,760 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 189 selfloop transitions, 34 changer transitions 1/249 dead transitions. [2024-11-10 22:21:10,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 249 transitions, 2286 flow [2024-11-10 22:21:10,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:21:10,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:21:10,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 278 transitions. [2024-11-10 22:21:10,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6017316017316018 [2024-11-10 22:21:10,761 INFO L175 Difference]: Start difference. First operand has 148 places, 204 transitions, 1684 flow. Second operand 6 states and 278 transitions. [2024-11-10 22:21:10,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 249 transitions, 2286 flow [2024-11-10 22:21:10,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 249 transitions, 1930 flow, removed 92 selfloop flow, removed 13 redundant places. [2024-11-10 22:21:10,788 INFO L231 Difference]: Finished difference. Result has 141 places, 203 transitions, 1388 flow [2024-11-10 22:21:10,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1388, PETRI_PLACES=141, PETRI_TRANSITIONS=203} [2024-11-10 22:21:10,789 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 74 predicate places. [2024-11-10 22:21:10,789 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 203 transitions, 1388 flow [2024-11-10 22:21:10,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:10,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:10,790 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:10,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 22:21:10,790 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:21:10,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:10,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1619916484, now seen corresponding path program 1 times [2024-11-10 22:21:10,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:10,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540562388] [2024-11-10 22:21:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:10,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:21:10,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:10,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540562388] [2024-11-10 22:21:10,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540562388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:10,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303741914] [2024-11-10 22:21:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:10,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:10,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:10,910 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:21:10,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:21:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:11,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:21:11,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:21:11,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:11,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:21:11,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303741914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:11,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:11,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2024-11-10 22:21:11,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178056629] [2024-11-10 22:21:11,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:11,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 22:21:11,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:11,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 22:21:11,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-10 22:21:11,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 77 [2024-11-10 22:21:11,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 203 transitions, 1388 flow. Second operand has 18 states, 18 states have (on average 27.88888888888889) internal successors, (502), 18 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:11,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:11,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 77 [2024-11-10 22:21:11,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:14,522 INFO L124 PetriNetUnfolderBase]: 14275/24194 cut-off events. [2024-11-10 22:21:14,522 INFO L125 PetriNetUnfolderBase]: For 17395/18191 co-relation queries the response was YES. [2024-11-10 22:21:14,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58005 conditions, 24194 events. 14275/24194 cut-off events. For 17395/18191 co-relation queries the response was YES. Maximal size of possible extension queue 1005. Compared 200698 event pairs, 4690 based on Foata normal form. 536/24045 useless extension candidates. Maximal degree in co-relation 57557. Up to 4615 conditions per place. [2024-11-10 22:21:14,648 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 389 selfloop transitions, 108 changer transitions 3/521 dead transitions. [2024-11-10 22:21:14,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 521 transitions, 4146 flow [2024-11-10 22:21:14,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 22:21:14,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 22:21:14,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 657 transitions. [2024-11-10 22:21:14,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.474025974025974 [2024-11-10 22:21:14,650 INFO L175 Difference]: Start difference. First operand has 141 places, 203 transitions, 1388 flow. Second operand 18 states and 657 transitions. [2024-11-10 22:21:14,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 521 transitions, 4146 flow [2024-11-10 22:21:14,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 521 transitions, 4083 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:21:14,707 INFO L231 Difference]: Finished difference. Result has 160 places, 263 transitions, 2273 flow [2024-11-10 22:21:14,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2273, PETRI_PLACES=160, PETRI_TRANSITIONS=263} [2024-11-10 22:21:14,708 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 93 predicate places. [2024-11-10 22:21:14,708 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 263 transitions, 2273 flow [2024-11-10 22:21:14,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 27.88888888888889) internal successors, (502), 18 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:14,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:14,709 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:14,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:21:14,910 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 [2024-11-10 22:21:14,910 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:21:14,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:14,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1769724858, now seen corresponding path program 1 times [2024-11-10 22:21:14,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:14,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519799243] [2024-11-10 22:21:14,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:14,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:21:15,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:15,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519799243] [2024-11-10 22:21:15,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519799243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:15,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:21:15,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:21:15,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421087831] [2024-11-10 22:21:15,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:15,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:21:15,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:15,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:21:15,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:21:15,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-11-10 22:21:15,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 263 transitions, 2273 flow. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:15,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:15,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-11-10 22:21:15,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:16,978 INFO L124 PetriNetUnfolderBase]: 11752/20655 cut-off events. [2024-11-10 22:21:16,978 INFO L125 PetriNetUnfolderBase]: For 20701/21008 co-relation queries the response was YES. [2024-11-10 22:21:17,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51645 conditions, 20655 events. 11752/20655 cut-off events. For 20701/21008 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 171652 event pairs, 4861 based on Foata normal form. 70/20237 useless extension candidates. Maximal degree in co-relation 51143. Up to 8891 conditions per place. [2024-11-10 22:21:17,105 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 239 selfloop transitions, 35 changer transitions 6/304 dead transitions. [2024-11-10 22:21:17,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 304 transitions, 3011 flow [2024-11-10 22:21:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:21:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:21:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 272 transitions. [2024-11-10 22:21:17,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5887445887445888 [2024-11-10 22:21:17,106 INFO L175 Difference]: Start difference. First operand has 160 places, 263 transitions, 2273 flow. Second operand 6 states and 272 transitions. [2024-11-10 22:21:17,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 304 transitions, 3011 flow [2024-11-10 22:21:17,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 304 transitions, 2934 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-11-10 22:21:17,156 INFO L231 Difference]: Finished difference. Result has 158 places, 262 transitions, 2273 flow [2024-11-10 22:21:17,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2273, PETRI_PLACES=158, PETRI_TRANSITIONS=262} [2024-11-10 22:21:17,157 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 91 predicate places. [2024-11-10 22:21:17,157 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 262 transitions, 2273 flow [2024-11-10 22:21:17,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:17,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:17,158 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:17,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 22:21:17,158 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:21:17,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:17,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2068833937, now seen corresponding path program 1 times [2024-11-10 22:21:17,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:17,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879737808] [2024-11-10 22:21:17,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:17,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:21:17,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879737808] [2024-11-10 22:21:17,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879737808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:17,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411010397] [2024-11-10 22:21:17,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:17,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:17,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:17,294 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:21:17,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:21:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:17,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:21:17,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:21:17,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:17,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:21:17,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411010397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:17,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:17,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-10 22:21:17,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449343070] [2024-11-10 22:21:17,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:17,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 22:21:17,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:17,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 22:21:17,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-10 22:21:17,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 77 [2024-11-10 22:21:17,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 262 transitions, 2273 flow. Second operand has 21 states, 21 states have (on average 27.285714285714285) internal successors, (573), 21 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:17,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:17,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 77 [2024-11-10 22:21:17,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:25,293 INFO L124 PetriNetUnfolderBase]: 36096/62203 cut-off events. [2024-11-10 22:21:25,293 INFO L125 PetriNetUnfolderBase]: For 61071/62155 co-relation queries the response was YES. [2024-11-10 22:21:25,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153414 conditions, 62203 events. 36096/62203 cut-off events. For 61071/62155 co-relation queries the response was YES. Maximal size of possible extension queue 2532. Compared 595945 event pairs, 13963 based on Foata normal form. 1284/61871 useless extension candidates. Maximal degree in co-relation 152759. Up to 8891 conditions per place. [2024-11-10 22:21:26,212 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 382 selfloop transitions, 300 changer transitions 16/719 dead transitions. [2024-11-10 22:21:26,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 719 transitions, 6250 flow [2024-11-10 22:21:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-10 22:21:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-10 22:21:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1347 transitions. [2024-11-10 22:21:26,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4266708900855242 [2024-11-10 22:21:26,215 INFO L175 Difference]: Start difference. First operand has 158 places, 262 transitions, 2273 flow. Second operand 41 states and 1347 transitions. [2024-11-10 22:21:26,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 719 transitions, 6250 flow [2024-11-10 22:21:26,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 719 transitions, 6146 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:21:26,373 INFO L231 Difference]: Finished difference. Result has 198 places, 378 transitions, 3949 flow [2024-11-10 22:21:26,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2204, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3949, PETRI_PLACES=198, PETRI_TRANSITIONS=378} [2024-11-10 22:21:26,374 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 131 predicate places. [2024-11-10 22:21:26,374 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 378 transitions, 3949 flow [2024-11-10 22:21:26,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 27.285714285714285) internal successors, (573), 21 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:26,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:26,374 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:26,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:21:26,575 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 [2024-11-10 22:21:26,575 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:21:26,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1414134944, now seen corresponding path program 1 times [2024-11-10 22:21:26,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:26,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416765543] [2024-11-10 22:21:26,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:26,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:21:26,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:26,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416765543] [2024-11-10 22:21:26,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416765543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:26,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278569513] [2024-11-10 22:21:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:26,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:26,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:26,670 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:21:26,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:21:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:26,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:21:26,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:26,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:21:26,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:21:27,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278569513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:27,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:27,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2024-11-10 22:21:27,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436923841] [2024-11-10 22:21:27,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:27,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 22:21:27,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:27,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 22:21:27,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-10 22:21:27,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 77 [2024-11-10 22:21:27,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 378 transitions, 3949 flow. Second operand has 18 states, 18 states have (on average 28.555555555555557) internal successors, (514), 18 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:27,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:27,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 77 [2024-11-10 22:21:27,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:33,770 INFO L124 PetriNetUnfolderBase]: 31939/53814 cut-off events. [2024-11-10 22:21:33,770 INFO L125 PetriNetUnfolderBase]: For 84913/85511 co-relation queries the response was YES. [2024-11-10 22:21:34,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141883 conditions, 53814 events. 31939/53814 cut-off events. For 84913/85511 co-relation queries the response was YES. Maximal size of possible extension queue 2142. Compared 491400 event pairs, 11442 based on Foata normal form. 1254/52812 useless extension candidates. Maximal degree in co-relation 141171. Up to 12676 conditions per place. [2024-11-10 22:21:34,208 INFO L140 encePairwiseOnDemand]: 63/77 looper letters, 479 selfloop transitions, 162 changer transitions 45/706 dead transitions. [2024-11-10 22:21:34,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 706 transitions, 7747 flow [2024-11-10 22:21:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 22:21:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 22:21:34,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 642 transitions. [2024-11-10 22:21:34,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-11-10 22:21:34,210 INFO L175 Difference]: Start difference. First operand has 198 places, 378 transitions, 3949 flow. Second operand 18 states and 642 transitions. [2024-11-10 22:21:34,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 706 transitions, 7747 flow [2024-11-10 22:21:34,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 706 transitions, 7526 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-11-10 22:21:34,377 INFO L231 Difference]: Finished difference. Result has 206 places, 379 transitions, 4122 flow [2024-11-10 22:21:34,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3785, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4122, PETRI_PLACES=206, PETRI_TRANSITIONS=379} [2024-11-10 22:21:34,378 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 139 predicate places. [2024-11-10 22:21:34,378 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 379 transitions, 4122 flow [2024-11-10 22:21:34,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 28.555555555555557) internal successors, (514), 18 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:34,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:34,378 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:34,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 22:21:34,579 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 [2024-11-10 22:21:34,579 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:21:34,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:34,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1929132962, now seen corresponding path program 1 times [2024-11-10 22:21:34,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:34,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808797432] [2024-11-10 22:21:34,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:34,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 22:21:34,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:34,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808797432] [2024-11-10 22:21:34,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808797432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:34,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387076577] [2024-11-10 22:21:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:34,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:34,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:34,657 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:21:34,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:21:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:34,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:21:34,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:21:34,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:21:34,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387076577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:34,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:34,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-10 22:21:34,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244602040] [2024-11-10 22:21:34,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:34,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 22:21:34,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:34,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 22:21:34,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-10 22:21:35,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 77 [2024-11-10 22:21:35,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 379 transitions, 4122 flow. Second operand has 19 states, 19 states have (on average 27.526315789473685) internal successors, (523), 19 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:35,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:35,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 77 [2024-11-10 22:21:35,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:42,152 INFO L124 PetriNetUnfolderBase]: 33665/57184 cut-off events. [2024-11-10 22:21:42,153 INFO L125 PetriNetUnfolderBase]: For 107027/107754 co-relation queries the response was YES. [2024-11-10 22:21:42,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155688 conditions, 57184 events. 33665/57184 cut-off events. For 107027/107754 co-relation queries the response was YES. Maximal size of possible extension queue 2057. Compared 528341 event pairs, 10359 based on Foata normal form. 718/56833 useless extension candidates. Maximal degree in co-relation 154963. Up to 10492 conditions per place. [2024-11-10 22:21:42,657 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 396 selfloop transitions, 170 changer transitions 18/604 dead transitions. [2024-11-10 22:21:42,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 604 transitions, 6440 flow [2024-11-10 22:21:42,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 22:21:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 22:21:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 660 transitions. [2024-11-10 22:21:42,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-10 22:21:42,658 INFO L175 Difference]: Start difference. First operand has 206 places, 379 transitions, 4122 flow. Second operand 18 states and 660 transitions. [2024-11-10 22:21:42,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 604 transitions, 6440 flow [2024-11-10 22:21:43,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 604 transitions, 6170 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-11-10 22:21:43,158 INFO L231 Difference]: Finished difference. Result has 214 places, 383 transitions, 4455 flow [2024-11-10 22:21:43,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3925, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4455, PETRI_PLACES=214, PETRI_TRANSITIONS=383} [2024-11-10 22:21:43,158 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 147 predicate places. [2024-11-10 22:21:43,158 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 383 transitions, 4455 flow [2024-11-10 22:21:43,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 27.526315789473685) internal successors, (523), 19 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:43,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:43,159 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:43,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 22:21:43,360 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 [2024-11-10 22:21:43,360 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:21:43,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:43,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1962118762, now seen corresponding path program 1 times [2024-11-10 22:21:43,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:43,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378126567] [2024-11-10 22:21:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:43,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 22:21:43,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:43,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378126567] [2024-11-10 22:21:43,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378126567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:43,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146390968] [2024-11-10 22:21:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:43,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:43,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:43,453 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:21:43,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:21:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:43,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:21:43,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:21:43,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:21:43,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146390968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:43,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:43,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-10 22:21:43,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046648388] [2024-11-10 22:21:43,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:43,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 22:21:43,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:43,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 22:21:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-10 22:21:43,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 77 [2024-11-10 22:21:43,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 383 transitions, 4455 flow. Second operand has 19 states, 19 states have (on average 28.05263157894737) internal successors, (533), 19 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:43,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:43,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 77 [2024-11-10 22:21:43,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand