./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:01:51,302 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:01:51,380 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:01:51,386 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:01:51,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:01:51,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:01:51,426 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:01:51,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:01:51,431 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:01:51,431 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:01:51,432 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:01:51,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:01:51,433 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:01:51,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:01:51,433 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:01:51,434 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:01:51,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:01:51,438 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:01:51,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:01:51,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:01:51,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:01:51,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:01:51,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:01:51,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:01:51,444 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:01:51,444 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:01:51,445 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:01:51,445 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:01:51,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:01:51,445 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:01:51,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:01:51,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:01:51,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:01:51,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:01:51,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:01:51,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:01:51,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:01:51,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:01:51,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:01:51,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:01:51,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:01:51,451 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:01:51,452 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:01:51,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:01:51,452 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2024-10-12 00:01:51,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:01:51,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:01:51,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:01:51,737 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:01:51,737 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:01:51,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-10-12 00:01:53,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:01:53,683 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:01:53,684 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-10-12 00:01:53,695 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/263502906/a092ba783e1643e9b93b39fc2b6c23b5/FLAG6ea904023 [2024-10-12 00:01:54,032 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/263502906/a092ba783e1643e9b93b39fc2b6c23b5 [2024-10-12 00:01:54,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:01:54,041 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:01:54,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:01:54,044 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:01:54,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:01:54,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:01:54" (1/1) ... [2024-10-12 00:01:54,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e5b71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54, skipping insertion in model container [2024-10-12 00:01:54,052 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:01:54" (1/1) ... [2024-10-12 00:01:54,084 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:01:54,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:01:54,361 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:01:54,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:01:54,432 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:01:54,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54 WrapperNode [2024-10-12 00:01:54,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:01:54,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:01:54,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:01:54,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:01:54,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54" (1/1) ... [2024-10-12 00:01:54,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54" (1/1) ... [2024-10-12 00:01:54,508 INFO L138 Inliner]: procedures = 24, calls = 25, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 257 [2024-10-12 00:01:54,512 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:01:54,513 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:01:54,513 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:01:54,513 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:01:54,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54" (1/1) ... [2024-10-12 00:01:54,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54" (1/1) ... [2024-10-12 00:01:54,539 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54" (1/1) ... [2024-10-12 00:01:54,559 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-12 00:01:54,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54" (1/1) ... [2024-10-12 00:01:54,566 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54" (1/1) ... [2024-10-12 00:01:54,574 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54" (1/1) ... [2024-10-12 00:01:54,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54" (1/1) ... [2024-10-12 00:01:54,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54" (1/1) ... [2024-10-12 00:01:54,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54" (1/1) ... [2024-10-12 00:01:54,585 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:01:54,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:01:54,587 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:01:54,587 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:01:54,588 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54" (1/1) ... [2024-10-12 00:01:54,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:01:54,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:01:54,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:01:54,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:01:54,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:01:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:01:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:01:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:01:54,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:01:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:01:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:01:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:01:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:01:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:01:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:01:54,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:01:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:01:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:01:54,714 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:01:54,838 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:01:54,841 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:01:55,217 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:01:55,218 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:01:55,511 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:01:55,513 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-12 00:01:55,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:01:55 BoogieIcfgContainer [2024-10-12 00:01:55,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:01:55,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:01:55,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:01:55,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:01:55,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:01:54" (1/3) ... [2024-10-12 00:01:55,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e611f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:01:55, skipping insertion in model container [2024-10-12 00:01:55,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:54" (2/3) ... [2024-10-12 00:01:55,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e611f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:01:55, skipping insertion in model container [2024-10-12 00:01:55,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:01:55" (3/3) ... [2024-10-12 00:01:55,524 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2024-10-12 00:01:55,543 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:01:55,544 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-10-12 00:01:55,544 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:01:55,605 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-12 00:01:55,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 81 transitions, 176 flow [2024-10-12 00:01:55,679 INFO L124 PetriNetUnfolderBase]: 11/79 cut-off events. [2024-10-12 00:01:55,680 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-12 00:01:55,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 11/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 247 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-10-12 00:01:55,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 81 transitions, 176 flow [2024-10-12 00:01:55,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 78 transitions, 168 flow [2024-10-12 00:01:55,701 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:01:55,709 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;@13d3b099, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:01:55,710 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-12 00:01:55,713 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:01:55,714 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:01:55,714 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:01:55,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:55,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:01:55,716 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:01:55,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:55,720 INFO L85 PathProgramCache]: Analyzing trace with hash 755936, now seen corresponding path program 1 times [2024-10-12 00:01:55,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:55,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055098635] [2024-10-12 00:01:55,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:55,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:56,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:56,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055098635] [2024-10-12 00:01:56,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055098635] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:56,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:56,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:01:56,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679394062] [2024-10-12 00:01:56,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:56,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:01:56,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:56,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:01:56,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:01:56,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-10-12 00:01:56,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:56,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:56,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-10-12 00:01:56,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:56,419 INFO L124 PetriNetUnfolderBase]: 595/1422 cut-off events. [2024-10-12 00:01:56,420 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-12 00:01:56,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 1422 events. 595/1422 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9413 event pairs, 390 based on Foata normal form. 3/1100 useless extension candidates. Maximal degree in co-relation 2283. Up to 906 conditions per place. [2024-10-12 00:01:56,435 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 34 selfloop transitions, 4 changer transitions 2/73 dead transitions. [2024-10-12 00:01:56,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 73 transitions, 236 flow [2024-10-12 00:01:56,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:01:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:01:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-10-12 00:01:56,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5802469135802469 [2024-10-12 00:01:56,451 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 168 flow. Second operand 4 states and 188 transitions. [2024-10-12 00:01:56,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 73 transitions, 236 flow [2024-10-12 00:01:56,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:01:56,460 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 153 flow [2024-10-12 00:01:56,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-10-12 00:01:56,467 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2024-10-12 00:01:56,469 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 153 flow [2024-10-12 00:01:56,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:56,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:56,470 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-12 00:01:56,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:01:56,471 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:01:56,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:56,473 INFO L85 PathProgramCache]: Analyzing trace with hash 23434778, now seen corresponding path program 1 times [2024-10-12 00:01:56,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:56,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556957357] [2024-10-12 00:01:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:56,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:56,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:56,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556957357] [2024-10-12 00:01:56,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556957357] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:56,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:56,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:01:56,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690167057] [2024-10-12 00:01:56,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:56,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:01:56,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:56,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:01:56,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:01:56,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-10-12 00:01:56,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:56,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:56,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-10-12 00:01:56,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:56,837 INFO L124 PetriNetUnfolderBase]: 596/1424 cut-off events. [2024-10-12 00:01:56,838 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-12 00:01:56,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2357 conditions, 1424 events. 596/1424 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9407 event pairs, 390 based on Foata normal form. 1/1100 useless extension candidates. Maximal degree in co-relation 2329. Up to 910 conditions per place. [2024-10-12 00:01:56,849 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 37 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-10-12 00:01:56,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 247 flow [2024-10-12 00:01:56,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:01:56,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:01:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-10-12 00:01:56,853 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-10-12 00:01:56,853 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 153 flow. Second operand 4 states and 186 transitions. [2024-10-12 00:01:56,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 247 flow [2024-10-12 00:01:56,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 74 transitions, 233 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:01:56,859 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 172 flow [2024-10-12 00:01:56,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-10-12 00:01:56,861 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2024-10-12 00:01:56,861 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 172 flow [2024-10-12 00:01:56,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:56,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:56,862 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:01:56,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:01:56,863 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:01:56,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:56,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1933404232, now seen corresponding path program 1 times [2024-10-12 00:01:56,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:56,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617249902] [2024-10-12 00:01:56,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:56,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:56,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:56,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617249902] [2024-10-12 00:01:56,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617249902] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:01:56,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565572542] [2024-10-12 00:01:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:56,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:01:56,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:01:56,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:01:57,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:01:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:57,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:01:57,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:01:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:57,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:01:57,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:57,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565572542] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:01:57,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:01:57,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-12 00:01:57,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347315231] [2024-10-12 00:01:57,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:01:57,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 00:01:57,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:57,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 00:01:57,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-12 00:01:57,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-10-12 00:01:57,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 172 flow. Second operand has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:57,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:57,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-10-12 00:01:57,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:57,440 INFO L124 PetriNetUnfolderBase]: 599/1436 cut-off events. [2024-10-12 00:01:57,440 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-12 00:01:57,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 1436 events. 599/1436 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9512 event pairs, 390 based on Foata normal form. 0/1108 useless extension candidates. Maximal degree in co-relation 2336. Up to 913 conditions per place. [2024-10-12 00:01:57,450 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 37 selfloop transitions, 13 changer transitions 0/83 dead transitions. [2024-10-12 00:01:57,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 308 flow [2024-10-12 00:01:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:01:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:01:57,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 413 transitions. [2024-10-12 00:01:57,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5098765432098765 [2024-10-12 00:01:57,456 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 172 flow. Second operand 10 states and 413 transitions. [2024-10-12 00:01:57,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 308 flow [2024-10-12 00:01:57,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:01:57,461 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 249 flow [2024-10-12 00:01:57,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-10-12 00:01:57,462 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2024-10-12 00:01:57,462 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 249 flow [2024-10-12 00:01:57,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:57,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:57,462 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:57,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:01:57,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:01:57,664 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:01:57,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:57,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1814705083, now seen corresponding path program 1 times [2024-10-12 00:01:57,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:57,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315897837] [2024-10-12 00:01:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:57,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:57,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315897837] [2024-10-12 00:01:57,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315897837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:57,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:57,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:01:57,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216732044] [2024-10-12 00:01:57,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:57,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:01:57,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:57,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:01:57,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:01:57,758 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-10-12 00:01:57,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:57,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:57,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-10-12 00:01:57,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:58,091 INFO L124 PetriNetUnfolderBase]: 1243/2844 cut-off events. [2024-10-12 00:01:58,092 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-12 00:01:58,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4816 conditions, 2844 events. 1243/2844 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21263 event pairs, 486 based on Foata normal form. 28/2265 useless extension candidates. Maximal degree in co-relation 4780. Up to 1042 conditions per place. [2024-10-12 00:01:58,109 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 96 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-10-12 00:01:58,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 131 transitions, 546 flow [2024-10-12 00:01:58,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:01:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:01:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-10-12 00:01:58,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7191358024691358 [2024-10-12 00:01:58,112 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 249 flow. Second operand 4 states and 233 transitions. [2024-10-12 00:01:58,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 131 transitions, 546 flow [2024-10-12 00:01:58,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 131 transitions, 516 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-12 00:01:58,115 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 241 flow [2024-10-12 00:01:58,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2024-10-12 00:01:58,116 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 9 predicate places. [2024-10-12 00:01:58,117 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 241 flow [2024-10-12 00:01:58,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:58,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:58,117 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:58,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:01:58,117 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:01:58,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:58,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2119896660, now seen corresponding path program 1 times [2024-10-12 00:01:58,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:58,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627221170] [2024-10-12 00:01:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:58,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:58,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:58,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:58,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627221170] [2024-10-12 00:01:58,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627221170] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:58,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:58,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:01:58,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101456971] [2024-10-12 00:01:58,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:58,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:01:58,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:58,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:01:58,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:01:58,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-10-12 00:01:58,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:58,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:58,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-10-12 00:01:58,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:58,682 INFO L124 PetriNetUnfolderBase]: 2395/5268 cut-off events. [2024-10-12 00:01:58,682 INFO L125 PetriNetUnfolderBase]: For 473/547 co-relation queries the response was YES. [2024-10-12 00:01:58,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9301 conditions, 5268 events. 2395/5268 cut-off events. For 473/547 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 42873 event pairs, 1004 based on Foata normal form. 52/4351 useless extension candidates. Maximal degree in co-relation 9267. Up to 2071 conditions per place. [2024-10-12 00:01:58,710 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 99 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2024-10-12 00:01:58,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 134 transitions, 573 flow [2024-10-12 00:01:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:01:58,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:01:58,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 230 transitions. [2024-10-12 00:01:58,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7098765432098766 [2024-10-12 00:01:58,719 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 241 flow. Second operand 4 states and 230 transitions. [2024-10-12 00:01:58,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 134 transitions, 573 flow [2024-10-12 00:01:58,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 134 transitions, 567 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:01:58,727 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 261 flow [2024-10-12 00:01:58,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2024-10-12 00:01:58,728 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2024-10-12 00:01:58,728 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 261 flow [2024-10-12 00:01:58,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:58,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:58,729 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:58,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:01:58,729 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:01:58,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:58,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1126064715, now seen corresponding path program 1 times [2024-10-12 00:01:58,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:58,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139916665] [2024-10-12 00:01:58,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:58,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:58,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:58,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139916665] [2024-10-12 00:01:58,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139916665] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:58,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:58,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:01:58,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253382905] [2024-10-12 00:01:58,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:58,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:01:58,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:58,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:01:58,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:01:58,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-10-12 00:01:58,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:58,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:58,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-10-12 00:01:58,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:59,277 INFO L124 PetriNetUnfolderBase]: 1925/4173 cut-off events. [2024-10-12 00:01:59,277 INFO L125 PetriNetUnfolderBase]: For 615/681 co-relation queries the response was YES. [2024-10-12 00:01:59,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 4173 events. 1925/4173 cut-off events. For 615/681 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 31837 event pairs, 754 based on Foata normal form. 0/3624 useless extension candidates. Maximal degree in co-relation 7901. Up to 1687 conditions per place. [2024-10-12 00:01:59,310 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 108 selfloop transitions, 4 changer transitions 6/152 dead transitions. [2024-10-12 00:01:59,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 152 transitions, 674 flow [2024-10-12 00:01:59,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:01:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:01:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 289 transitions. [2024-10-12 00:01:59,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7135802469135802 [2024-10-12 00:01:59,312 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 261 flow. Second operand 5 states and 289 transitions. [2024-10-12 00:01:59,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 152 transitions, 674 flow [2024-10-12 00:01:59,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 152 transitions, 666 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:01:59,318 INFO L231 Difference]: Finished difference. Result has 93 places, 89 transitions, 284 flow [2024-10-12 00:01:59,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=93, PETRI_TRANSITIONS=89} [2024-10-12 00:01:59,319 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2024-10-12 00:01:59,319 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 284 flow [2024-10-12 00:01:59,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:59,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:59,320 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:59,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:01:59,320 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:01:59,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:59,321 INFO L85 PathProgramCache]: Analyzing trace with hash -513898147, now seen corresponding path program 1 times [2024-10-12 00:01:59,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:59,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031218483] [2024-10-12 00:01:59,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:59,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:01:59,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:59,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031218483] [2024-10-12 00:01:59,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031218483] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:59,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:59,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:01:59,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792992371] [2024-10-12 00:01:59,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:59,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:01:59,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:59,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:01:59,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:01:59,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-10-12 00:01:59,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:59,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:59,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-10-12 00:01:59,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:59,817 INFO L124 PetriNetUnfolderBase]: 1832/4355 cut-off events. [2024-10-12 00:01:59,817 INFO L125 PetriNetUnfolderBase]: For 1245/1279 co-relation queries the response was YES. [2024-10-12 00:01:59,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8438 conditions, 4355 events. 1832/4355 cut-off events. For 1245/1279 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35297 event pairs, 1375 based on Foata normal form. 1/3721 useless extension candidates. Maximal degree in co-relation 8404. Up to 2865 conditions per place. [2024-10-12 00:01:59,851 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 52 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2024-10-12 00:01:59,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 388 flow [2024-10-12 00:01:59,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:01:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:01:59,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-10-12 00:01:59,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6337448559670782 [2024-10-12 00:01:59,856 INFO L175 Difference]: Start difference. First operand has 93 places, 89 transitions, 284 flow. Second operand 3 states and 154 transitions. [2024-10-12 00:01:59,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 388 flow [2024-10-12 00:01:59,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 88 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:01:59,862 INFO L231 Difference]: Finished difference. Result has 95 places, 88 transitions, 284 flow [2024-10-12 00:01:59,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=95, PETRI_TRANSITIONS=88} [2024-10-12 00:01:59,863 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2024-10-12 00:01:59,864 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 88 transitions, 284 flow [2024-10-12 00:01:59,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:59,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:59,864 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:59,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:01:59,865 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:01:59,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:59,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1099438591, now seen corresponding path program 1 times [2024-10-12 00:01:59,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:59,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662490924] [2024-10-12 00:01:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:59,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:01:59,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:59,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662490924] [2024-10-12 00:01:59,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662490924] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:01:59,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968987728] [2024-10-12 00:01:59,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:59,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:01:59,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:01:59,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:01:59,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:02:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:00,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:02:00,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:02:00,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:02:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:02:00,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968987728] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:02:00,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:02:00,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-12 00:02:00,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589362662] [2024-10-12 00:02:00,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:02:00,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 00:02:00,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:00,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 00:02:00,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-12 00:02:00,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-10-12 00:02:00,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 88 transitions, 284 flow. Second operand has 10 states, 10 states have (on average 37.7) internal successors, (377), 10 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:00,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:00,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-10-12 00:02:00,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:00,672 INFO L124 PetriNetUnfolderBase]: 1830/4353 cut-off events. [2024-10-12 00:02:00,673 INFO L125 PetriNetUnfolderBase]: For 1251/1285 co-relation queries the response was YES. [2024-10-12 00:02:00,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8436 conditions, 4353 events. 1830/4353 cut-off events. For 1251/1285 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35279 event pairs, 1375 based on Foata normal form. 2/3720 useless extension candidates. Maximal degree in co-relation 8408. Up to 2857 conditions per place. [2024-10-12 00:02:00,693 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 43 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2024-10-12 00:02:00,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 86 transitions, 382 flow [2024-10-12 00:02:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:02:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:02:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 297 transitions. [2024-10-12 00:02:00,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-10-12 00:02:00,699 INFO L175 Difference]: Start difference. First operand has 95 places, 88 transitions, 284 flow. Second operand 7 states and 297 transitions. [2024-10-12 00:02:00,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 86 transitions, 382 flow [2024-10-12 00:02:00,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 86 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:02:00,703 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 292 flow [2024-10-12 00:02:00,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-10-12 00:02:00,705 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2024-10-12 00:02:00,706 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 292 flow [2024-10-12 00:02:00,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.7) internal successors, (377), 10 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:00,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:00,706 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-12 00:02:00,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 00:02:00,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:00,911 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:00,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:00,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1023767398, now seen corresponding path program 2 times [2024-10-12 00:02:00,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:00,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499705516] [2024-10-12 00:02:00,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:00,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:02:01,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:01,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499705516] [2024-10-12 00:02:01,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499705516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:01,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:01,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 00:02:01,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83070976] [2024-10-12 00:02:01,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:01,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 00:02:01,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:01,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 00:02:01,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-12 00:02:01,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-10-12 00:02:01,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 292 flow. Second operand has 9 states, 9 states have (on average 39.111111111111114) internal successors, (352), 9 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:01,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:01,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-10-12 00:02:01,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:01,546 INFO L124 PetriNetUnfolderBase]: 1828/4345 cut-off events. [2024-10-12 00:02:01,547 INFO L125 PetriNetUnfolderBase]: For 1241/1275 co-relation queries the response was YES. [2024-10-12 00:02:01,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8415 conditions, 4345 events. 1828/4345 cut-off events. For 1241/1275 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35264 event pairs, 1375 based on Foata normal form. 1/3712 useless extension candidates. Maximal degree in co-relation 8400. Up to 2853 conditions per place. [2024-10-12 00:02:01,583 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 39 selfloop transitions, 8 changer transitions 0/80 dead transitions. [2024-10-12 00:02:01,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 80 transitions, 344 flow [2024-10-12 00:02:01,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 00:02:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-12 00:02:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 384 transitions. [2024-10-12 00:02:01,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267489711934157 [2024-10-12 00:02:01,586 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 292 flow. Second operand 9 states and 384 transitions. [2024-10-12 00:02:01,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 80 transitions, 344 flow [2024-10-12 00:02:01,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 80 transitions, 316 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-10-12 00:02:01,590 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 238 flow [2024-10-12 00:02:01,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=238, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2024-10-12 00:02:01,591 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 20 predicate places. [2024-10-12 00:02:01,592 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 238 flow [2024-10-12 00:02:01,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 39.111111111111114) internal successors, (352), 9 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:01,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:01,592 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:01,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 00:02:01,593 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:01,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:01,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1628619457, now seen corresponding path program 2 times [2024-10-12 00:02:01,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:01,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014164607] [2024-10-12 00:02:01,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:01,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:01,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:01,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014164607] [2024-10-12 00:02:01,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014164607] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:01,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048701516] [2024-10-12 00:02:01,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:02:01,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:01,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:01,682 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:01,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:02:01,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:02:01,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:02:01,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:02:01,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:01,816 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:01,816 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:01,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048701516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:01,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:01,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-12 00:02:01,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003313482] [2024-10-12 00:02:01,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:01,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:02:01,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:01,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:02:01,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-12 00:02:01,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-10-12 00:02:01,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:01,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:01,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-10-12 00:02:01,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:02,237 INFO L124 PetriNetUnfolderBase]: 2119/4621 cut-off events. [2024-10-12 00:02:02,238 INFO L125 PetriNetUnfolderBase]: For 1145/1161 co-relation queries the response was YES. [2024-10-12 00:02:02,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9215 conditions, 4621 events. 2119/4621 cut-off events. For 1145/1161 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 35739 event pairs, 1273 based on Foata normal form. 52/4001 useless extension candidates. Maximal degree in co-relation 9204. Up to 2633 conditions per place. [2024-10-12 00:02:02,268 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 63 selfloop transitions, 5 changer transitions 0/98 dead transitions. [2024-10-12 00:02:02,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 98 transitions, 421 flow [2024-10-12 00:02:02,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:02,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-10-12 00:02:02,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6080246913580247 [2024-10-12 00:02:02,270 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 238 flow. Second operand 4 states and 197 transitions. [2024-10-12 00:02:02,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 98 transitions, 421 flow [2024-10-12 00:02:02,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 98 transitions, 405 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-12 00:02:02,313 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 228 flow [2024-10-12 00:02:02,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-10-12 00:02:02,314 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2024-10-12 00:02:02,314 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 228 flow [2024-10-12 00:02:02,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:02,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:02,315 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:02,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 00:02:02,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:02,516 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:02,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:02,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1052405208, now seen corresponding path program 1 times [2024-10-12 00:02:02,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:02,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663602754] [2024-10-12 00:02:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:02,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:02,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:02,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663602754] [2024-10-12 00:02:02,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663602754] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:02,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:02,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:02:02,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30721843] [2024-10-12 00:02:02,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:02,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:02:02,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:02,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:02:02,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:02:02,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-10-12 00:02:02,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:02,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:02,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-10-12 00:02:02,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:02,970 INFO L124 PetriNetUnfolderBase]: 1852/4286 cut-off events. [2024-10-12 00:02:02,970 INFO L125 PetriNetUnfolderBase]: For 1876/1884 co-relation queries the response was YES. [2024-10-12 00:02:02,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8551 conditions, 4286 events. 1852/4286 cut-off events. For 1876/1884 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 33873 event pairs, 1249 based on Foata normal form. 52/3746 useless extension candidates. Maximal degree in co-relation 8540. Up to 2634 conditions per place. [2024-10-12 00:02:02,993 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 62 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2024-10-12 00:02:02,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 97 transitions, 407 flow [2024-10-12 00:02:02,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:02:02,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:02:02,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-10-12 00:02:02,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707818930041153 [2024-10-12 00:02:02,995 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 228 flow. Second operand 3 states and 163 transitions. [2024-10-12 00:02:02,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 97 transitions, 407 flow [2024-10-12 00:02:02,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 97 transitions, 397 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:02:03,000 INFO L231 Difference]: Finished difference. Result has 86 places, 78 transitions, 222 flow [2024-10-12 00:02:03,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=86, PETRI_TRANSITIONS=78} [2024-10-12 00:02:03,001 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2024-10-12 00:02:03,001 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 78 transitions, 222 flow [2024-10-12 00:02:03,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:03,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:03,002 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:03,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 00:02:03,002 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:03,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:03,004 INFO L85 PathProgramCache]: Analyzing trace with hash -839160949, now seen corresponding path program 1 times [2024-10-12 00:02:03,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:03,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234006480] [2024-10-12 00:02:03,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:03,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:03,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:03,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234006480] [2024-10-12 00:02:03,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234006480] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:03,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:03,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:02:03,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109656225] [2024-10-12 00:02:03,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:03,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:03,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:03,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:03,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:02:03,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-10-12 00:02:03,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 78 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:03,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:03,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-10-12 00:02:03,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:03,413 INFO L124 PetriNetUnfolderBase]: 1577/3447 cut-off events. [2024-10-12 00:02:03,414 INFO L125 PetriNetUnfolderBase]: For 1681/1689 co-relation queries the response was YES. [2024-10-12 00:02:03,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7271 conditions, 3447 events. 1577/3447 cut-off events. For 1681/1689 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 24169 event pairs, 719 based on Foata normal form. 0/3096 useless extension candidates. Maximal degree in co-relation 7260. Up to 1478 conditions per place. [2024-10-12 00:02:03,436 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 97 selfloop transitions, 4 changer transitions 12/144 dead transitions. [2024-10-12 00:02:03,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 144 transitions, 706 flow [2024-10-12 00:02:03,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:02:03,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:02:03,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 284 transitions. [2024-10-12 00:02:03,442 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7012345679012346 [2024-10-12 00:02:03,442 INFO L175 Difference]: Start difference. First operand has 86 places, 78 transitions, 222 flow. Second operand 5 states and 284 transitions. [2024-10-12 00:02:03,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 144 transitions, 706 flow [2024-10-12 00:02:03,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 144 transitions, 674 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:02:03,447 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 239 flow [2024-10-12 00:02:03,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2024-10-12 00:02:03,449 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2024-10-12 00:02:03,449 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 239 flow [2024-10-12 00:02:03,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:03,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:03,450 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:03,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 00:02:03,450 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:03,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:03,451 INFO L85 PathProgramCache]: Analyzing trace with hash -209815962, now seen corresponding path program 1 times [2024-10-12 00:02:03,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:03,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560674572] [2024-10-12 00:02:03,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:03,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:03,542 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:03,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:03,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560674572] [2024-10-12 00:02:03,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560674572] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:03,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258682499] [2024-10-12 00:02:03,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:03,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:03,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:03,545 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:03,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 00:02:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:03,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:02:03,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:03,650 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:03,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258682499] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:03,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:03,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-12 00:02:03,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250469828] [2024-10-12 00:02:03,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:03,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:02:03,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:03,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:02:03,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:03,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-10-12 00:02:03,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:03,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:03,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-10-12 00:02:03,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:04,004 INFO L124 PetriNetUnfolderBase]: 1666/3464 cut-off events. [2024-10-12 00:02:04,004 INFO L125 PetriNetUnfolderBase]: For 1760/1760 co-relation queries the response was YES. [2024-10-12 00:02:04,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7780 conditions, 3464 events. 1666/3464 cut-off events. For 1760/1760 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 23406 event pairs, 77 based on Foata normal form. 47/3204 useless extension candidates. Maximal degree in co-relation 7767. Up to 1461 conditions per place. [2024-10-12 00:02:04,022 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 128 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2024-10-12 00:02:04,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 162 transitions, 803 flow [2024-10-12 00:02:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:02:04,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:02:04,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 326 transitions. [2024-10-12 00:02:04,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707818930041153 [2024-10-12 00:02:04,024 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 239 flow. Second operand 6 states and 326 transitions. [2024-10-12 00:02:04,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 162 transitions, 803 flow [2024-10-12 00:02:04,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 162 transitions, 803 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:02:04,032 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 245 flow [2024-10-12 00:02:04,032 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-10-12 00:02:04,033 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2024-10-12 00:02:04,033 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 245 flow [2024-10-12 00:02:04,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:04,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:04,034 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:04,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 00:02:04,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 00:02:04,234 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:04,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:04,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2043007611, now seen corresponding path program 1 times [2024-10-12 00:02:04,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:04,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894149955] [2024-10-12 00:02:04,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:04,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:04,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:04,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894149955] [2024-10-12 00:02:04,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894149955] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:04,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192791995] [2024-10-12 00:02:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:04,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:04,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:04,368 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:04,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 00:02:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:04,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 00:02:04,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:04,515 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:04,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192791995] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:04,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:04,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 00:02:04,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354878994] [2024-10-12 00:02:04,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:04,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:04,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:04,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:04,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:04,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-10-12 00:02:04,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 245 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) [2024-10-12 00:02:04,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:04,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-10-12 00:02:04,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:05,037 INFO L124 PetriNetUnfolderBase]: 2050/4517 cut-off events. [2024-10-12 00:02:05,038 INFO L125 PetriNetUnfolderBase]: For 2959/2973 co-relation queries the response was YES. [2024-10-12 00:02:05,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9878 conditions, 4517 events. 2050/4517 cut-off events. For 2959/2973 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 33518 event pairs, 1239 based on Foata normal form. 92/4132 useless extension candidates. Maximal degree in co-relation 9864. Up to 2435 conditions per place. [2024-10-12 00:02:05,076 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 114 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2024-10-12 00:02:05,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 145 transitions, 749 flow [2024-10-12 00:02:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:02:05,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:02:05,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 264 transitions. [2024-10-12 00:02:05,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6518518518518519 [2024-10-12 00:02:05,078 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 245 flow. Second operand 5 states and 264 transitions. [2024-10-12 00:02:05,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 145 transitions, 749 flow [2024-10-12 00:02:05,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 145 transitions, 713 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-12 00:02:05,085 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 272 flow [2024-10-12 00:02:05,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2024-10-12 00:02:05,086 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 23 predicate places. [2024-10-12 00:02:05,086 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 272 flow [2024-10-12 00:02:05,087 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) [2024-10-12 00:02:05,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:05,087 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:05,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 00:02:05,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 00:02:05,289 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:05,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:05,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2085640624, now seen corresponding path program 1 times [2024-10-12 00:02:05,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:05,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067789786] [2024-10-12 00:02:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:05,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:05,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:05,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067789786] [2024-10-12 00:02:05,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067789786] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:05,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:05,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:02:05,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861270024] [2024-10-12 00:02:05,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:05,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:02:05,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:02:05,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:02:05,348 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-10-12 00:02:05,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:05,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:05,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-10-12 00:02:05,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:05,764 INFO L124 PetriNetUnfolderBase]: 1735/4038 cut-off events. [2024-10-12 00:02:05,765 INFO L125 PetriNetUnfolderBase]: For 2631/2657 co-relation queries the response was YES. [2024-10-12 00:02:05,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9045 conditions, 4038 events. 1735/4038 cut-off events. For 2631/2657 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 30394 event pairs, 1286 based on Foata normal form. 67/3728 useless extension candidates. Maximal degree in co-relation 9030. Up to 2520 conditions per place. [2024-10-12 00:02:05,794 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 69 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-10-12 00:02:05,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 102 transitions, 513 flow [2024-10-12 00:02:05,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:02:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:02:05,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-10-12 00:02:05,796 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-12 00:02:05,796 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 272 flow. Second operand 3 states and 162 transitions. [2024-10-12 00:02:05,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 102 transitions, 513 flow [2024-10-12 00:02:05,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 506 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-12 00:02:05,805 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 270 flow [2024-10-12 00:02:05,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-10-12 00:02:05,807 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2024-10-12 00:02:05,807 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 270 flow [2024-10-12 00:02:05,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:05,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:05,808 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:05,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 00:02:05,808 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:05,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:05,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1091272669, now seen corresponding path program 1 times [2024-10-12 00:02:05,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:05,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756452237] [2024-10-12 00:02:05,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:05,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:05,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:05,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756452237] [2024-10-12 00:02:05,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756452237] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:05,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590108522] [2024-10-12 00:02:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:05,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:05,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:05,948 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:05,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 00:02:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:06,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:02:06,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:06,096 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:06,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590108522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:06,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:06,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-10-12 00:02:06,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245061254] [2024-10-12 00:02:06,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:06,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:06,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:06,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:06,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:06,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-10-12 00:02:06,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:06,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:06,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-10-12 00:02:06,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:06,569 INFO L124 PetriNetUnfolderBase]: 1833/4174 cut-off events. [2024-10-12 00:02:06,570 INFO L125 PetriNetUnfolderBase]: For 2885/2889 co-relation queries the response was YES. [2024-10-12 00:02:06,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9516 conditions, 4174 events. 1833/4174 cut-off events. For 2885/2889 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 30921 event pairs, 1060 based on Foata normal form. 50/3867 useless extension candidates. Maximal degree in co-relation 9501. Up to 2021 conditions per place. [2024-10-12 00:02:06,596 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 69 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2024-10-12 00:02:06,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 495 flow [2024-10-12 00:02:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:06,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-10-12 00:02:06,599 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-10-12 00:02:06,600 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 270 flow. Second operand 4 states and 196 transitions. [2024-10-12 00:02:06,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 495 flow [2024-10-12 00:02:06,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 100 transitions, 479 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:02:06,610 INFO L231 Difference]: Finished difference. Result has 96 places, 79 transitions, 268 flow [2024-10-12 00:02:06,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=96, PETRI_TRANSITIONS=79} [2024-10-12 00:02:06,611 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2024-10-12 00:02:06,611 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 79 transitions, 268 flow [2024-10-12 00:02:06,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:06,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:06,612 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:06,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 00:02:06,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 00:02:06,815 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:06,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:06,816 INFO L85 PathProgramCache]: Analyzing trace with hash 530254687, now seen corresponding path program 1 times [2024-10-12 00:02:06,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:06,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043162993] [2024-10-12 00:02:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:06,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:06,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:06,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043162993] [2024-10-12 00:02:06,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043162993] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:06,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733139245] [2024-10-12 00:02:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:06,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:06,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:06,933 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:06,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 00:02:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:07,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:02:07,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:07,095 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:07,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733139245] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:07,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:07,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-10-12 00:02:07,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34930740] [2024-10-12 00:02:07,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:07,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:07,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:07,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:07,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:07,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-10-12 00:02:07,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 79 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:07,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:07,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-10-12 00:02:07,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:07,570 INFO L124 PetriNetUnfolderBase]: 1837/4136 cut-off events. [2024-10-12 00:02:07,570 INFO L125 PetriNetUnfolderBase]: For 2931/2935 co-relation queries the response was YES. [2024-10-12 00:02:07,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9421 conditions, 4136 events. 1837/4136 cut-off events. For 2931/2935 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30270 event pairs, 1060 based on Foata normal form. 50/3829 useless extension candidates. Maximal degree in co-relation 9406. Up to 2021 conditions per place. [2024-10-12 00:02:07,598 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 70 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2024-10-12 00:02:07,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 99 transitions, 485 flow [2024-10-12 00:02:07,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:07,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:07,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-10-12 00:02:07,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-10-12 00:02:07,600 INFO L175 Difference]: Start difference. First operand has 96 places, 79 transitions, 268 flow. Second operand 4 states and 192 transitions. [2024-10-12 00:02:07,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 99 transitions, 485 flow [2024-10-12 00:02:07,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 99 transitions, 477 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:02:07,610 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 264 flow [2024-10-12 00:02:07,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2024-10-12 00:02:07,611 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2024-10-12 00:02:07,611 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 264 flow [2024-10-12 00:02:07,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:07,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:07,611 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:07,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 00:02:07,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:07,813 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:07,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:07,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1450169293, now seen corresponding path program 1 times [2024-10-12 00:02:07,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:07,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533668951] [2024-10-12 00:02:07,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:07,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:07,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:07,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533668951] [2024-10-12 00:02:07,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533668951] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:07,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579445652] [2024-10-12 00:02:07,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:07,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:07,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:07,892 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:07,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 00:02:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:07,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 00:02:07,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:08,001 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:08,001 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:08,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579445652] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:08,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:08,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 00:02:08,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749768501] [2024-10-12 00:02:08,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:08,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:08,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:08,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:08,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:08,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-10-12 00:02:08,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 264 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) [2024-10-12 00:02:08,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:08,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-10-12 00:02:08,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:08,544 INFO L124 PetriNetUnfolderBase]: 2332/5033 cut-off events. [2024-10-12 00:02:08,544 INFO L125 PetriNetUnfolderBase]: For 3340/3370 co-relation queries the response was YES. [2024-10-12 00:02:08,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11389 conditions, 5033 events. 2332/5033 cut-off events. For 3340/3370 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 37333 event pairs, 1423 based on Foata normal form. 132/4703 useless extension candidates. Maximal degree in co-relation 11374. Up to 2761 conditions per place. [2024-10-12 00:02:08,576 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 119 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2024-10-12 00:02:08,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 147 transitions, 832 flow [2024-10-12 00:02:08,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:02:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:02:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 261 transitions. [2024-10-12 00:02:08,582 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-10-12 00:02:08,582 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 264 flow. Second operand 5 states and 261 transitions. [2024-10-12 00:02:08,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 147 transitions, 832 flow [2024-10-12 00:02:08,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 147 transitions, 806 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:02:08,592 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 292 flow [2024-10-12 00:02:08,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2024-10-12 00:02:08,593 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 24 predicate places. [2024-10-12 00:02:08,593 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 292 flow [2024-10-12 00:02:08,593 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) [2024-10-12 00:02:08,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:08,593 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:08,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 00:02:08,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 00:02:08,798 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:08,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:08,798 INFO L85 PathProgramCache]: Analyzing trace with hash -741973050, now seen corresponding path program 1 times [2024-10-12 00:02:08,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:08,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589602895] [2024-10-12 00:02:08,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:08,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:08,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:08,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589602895] [2024-10-12 00:02:08,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589602895] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:08,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220323076] [2024-10-12 00:02:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:08,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:08,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:08,893 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:08,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 00:02:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:08,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 00:02:08,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:09,008 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:09,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220323076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:09,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:09,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 00:02:09,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628403966] [2024-10-12 00:02:09,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:09,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:09,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:09,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:09,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-10-12 00:02:09,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:09,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:09,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-10-12 00:02:09,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:09,516 INFO L124 PetriNetUnfolderBase]: 2111/4888 cut-off events. [2024-10-12 00:02:09,516 INFO L125 PetriNetUnfolderBase]: For 3521/3541 co-relation queries the response was YES. [2024-10-12 00:02:09,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11323 conditions, 4888 events. 2111/4888 cut-off events. For 3521/3541 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 37780 event pairs, 1475 based on Foata normal form. 62/4580 useless extension candidates. Maximal degree in co-relation 11306. Up to 2804 conditions per place. [2024-10-12 00:02:09,557 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 120 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2024-10-12 00:02:09,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 149 transitions, 832 flow [2024-10-12 00:02:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:02:09,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:02:09,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 259 transitions. [2024-10-12 00:02:09,560 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6395061728395062 [2024-10-12 00:02:09,560 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 292 flow. Second operand 5 states and 259 transitions. [2024-10-12 00:02:09,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 149 transitions, 832 flow [2024-10-12 00:02:09,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 149 transitions, 824 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:02:09,576 INFO L231 Difference]: Finished difference. Result has 100 places, 79 transitions, 291 flow [2024-10-12 00:02:09,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=100, PETRI_TRANSITIONS=79} [2024-10-12 00:02:09,576 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2024-10-12 00:02:09,576 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 79 transitions, 291 flow [2024-10-12 00:02:09,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:09,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:09,577 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:09,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 00:02:09,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:09,782 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:09,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:09,782 INFO L85 PathProgramCache]: Analyzing trace with hash -741974075, now seen corresponding path program 1 times [2024-10-12 00:02:09,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:09,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247470997] [2024-10-12 00:02:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:09,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:09,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:09,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247470997] [2024-10-12 00:02:09,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247470997] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:09,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157217027] [2024-10-12 00:02:09,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:09,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:09,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:09,895 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:09,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 00:02:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:09,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:02:09,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:10,093 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:10,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157217027] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:10,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:10,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-10-12 00:02:10,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652059617] [2024-10-12 00:02:10,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:10,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:02:10,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:10,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:02:10,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 00:02:10,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-10-12 00:02:10,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 79 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:10,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:10,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-10-12 00:02:10,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:10,669 INFO L124 PetriNetUnfolderBase]: 2189/4922 cut-off events. [2024-10-12 00:02:10,669 INFO L125 PetriNetUnfolderBase]: For 3545/3569 co-relation queries the response was YES. [2024-10-12 00:02:10,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11647 conditions, 4922 events. 2189/4922 cut-off events. For 3545/3569 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 37189 event pairs, 1547 based on Foata normal form. 64/4708 useless extension candidates. Maximal degree in co-relation 11630. Up to 2931 conditions per place. [2024-10-12 00:02:10,713 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 120 selfloop transitions, 6 changer transitions 0/149 dead transitions. [2024-10-12 00:02:10,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 149 transitions, 836 flow [2024-10-12 00:02:10,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:02:10,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:02:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 287 transitions. [2024-10-12 00:02:10,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5905349794238683 [2024-10-12 00:02:10,717 INFO L175 Difference]: Start difference. First operand has 100 places, 79 transitions, 291 flow. Second operand 6 states and 287 transitions. [2024-10-12 00:02:10,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 149 transitions, 836 flow [2024-10-12 00:02:10,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 149 transitions, 827 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:02:10,733 INFO L231 Difference]: Finished difference. Result has 103 places, 79 transitions, 298 flow [2024-10-12 00:02:10,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=103, PETRI_TRANSITIONS=79} [2024-10-12 00:02:10,733 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2024-10-12 00:02:10,734 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 79 transitions, 298 flow [2024-10-12 00:02:10,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:10,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:10,734 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:10,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-12 00:02:10,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:10,935 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:10,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:10,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2005574262, now seen corresponding path program 1 times [2024-10-12 00:02:10,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:10,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086509959] [2024-10-12 00:02:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:11,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:11,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086509959] [2024-10-12 00:02:11,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086509959] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:11,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705597899] [2024-10-12 00:02:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:11,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:11,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:11,017 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:11,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 00:02:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:11,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:02:11,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:11,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:11,144 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:11,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705597899] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:11,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:11,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-10-12 00:02:11,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888317285] [2024-10-12 00:02:11,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:11,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:11,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:11,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:11,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:11,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-10-12 00:02:11,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 79 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:11,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:11,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-10-12 00:02:11,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:11,584 INFO L124 PetriNetUnfolderBase]: 2065/4669 cut-off events. [2024-10-12 00:02:11,584 INFO L125 PetriNetUnfolderBase]: For 3823/3847 co-relation queries the response was YES. [2024-10-12 00:02:11,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11186 conditions, 4669 events. 2065/4669 cut-off events. For 3823/3847 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 35343 event pairs, 1200 based on Foata normal form. 75/4456 useless extension candidates. Maximal degree in co-relation 11168. Up to 2309 conditions per place. [2024-10-12 00:02:11,611 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 72 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2024-10-12 00:02:11,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 100 transitions, 554 flow [2024-10-12 00:02:11,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:11,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-10-12 00:02:11,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2024-10-12 00:02:11,612 INFO L175 Difference]: Start difference. First operand has 103 places, 79 transitions, 298 flow. Second operand 4 states and 195 transitions. [2024-10-12 00:02:11,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 100 transitions, 554 flow [2024-10-12 00:02:11,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 100 transitions, 534 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:02:11,626 INFO L231 Difference]: Finished difference. Result has 100 places, 78 transitions, 292 flow [2024-10-12 00:02:11,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=100, PETRI_TRANSITIONS=78} [2024-10-12 00:02:11,627 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2024-10-12 00:02:11,627 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 78 transitions, 292 flow [2024-10-12 00:02:11,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:11,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:11,628 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:11,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 00:02:11,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-12 00:02:11,829 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:11,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:11,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1526359006, now seen corresponding path program 1 times [2024-10-12 00:02:11,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:11,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567481764] [2024-10-12 00:02:11,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:11,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:11,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:11,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567481764] [2024-10-12 00:02:11,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567481764] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:11,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543508013] [2024-10-12 00:02:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:11,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:11,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:11,915 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:11,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 00:02:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:12,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:02:12,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:12,085 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:12,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543508013] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:12,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:12,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-10-12 00:02:12,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953677473] [2024-10-12 00:02:12,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:12,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:02:12,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:12,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:02:12,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-12 00:02:12,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-10-12 00:02:12,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 78 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:12,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:12,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-10-12 00:02:12,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:12,683 INFO L124 PetriNetUnfolderBase]: 2424/5168 cut-off events. [2024-10-12 00:02:12,684 INFO L125 PetriNetUnfolderBase]: For 4269/4315 co-relation queries the response was YES. [2024-10-12 00:02:12,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12614 conditions, 5168 events. 2424/5168 cut-off events. For 4269/4315 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 37979 event pairs, 1200 based on Foata normal form. 124/5092 useless extension candidates. Maximal degree in co-relation 12596. Up to 2346 conditions per place. [2024-10-12 00:02:12,716 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 139 selfloop transitions, 11 changer transitions 0/172 dead transitions. [2024-10-12 00:02:12,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 172 transitions, 1012 flow [2024-10-12 00:02:12,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:02:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:02:12,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 335 transitions. [2024-10-12 00:02:12,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5908289241622575 [2024-10-12 00:02:12,718 INFO L175 Difference]: Start difference. First operand has 100 places, 78 transitions, 292 flow. Second operand 7 states and 335 transitions. [2024-10-12 00:02:12,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 172 transitions, 1012 flow [2024-10-12 00:02:12,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 172 transitions, 980 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:02:12,732 INFO L231 Difference]: Finished difference. Result has 105 places, 80 transitions, 324 flow [2024-10-12 00:02:12,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=105, PETRI_TRANSITIONS=80} [2024-10-12 00:02:12,732 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 31 predicate places. [2024-10-12 00:02:12,732 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 80 transitions, 324 flow [2024-10-12 00:02:12,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:12,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:12,733 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:12,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-12 00:02:12,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:12,933 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:12,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:12,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2043290889, now seen corresponding path program 1 times [2024-10-12 00:02:12,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:12,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861664004] [2024-10-12 00:02:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:12,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:13,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:13,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861664004] [2024-10-12 00:02:13,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861664004] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:13,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102734261] [2024-10-12 00:02:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:13,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:13,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:13,006 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:13,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 00:02:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:13,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:02:13,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:13,133 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:13,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102734261] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:13,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:13,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-10-12 00:02:13,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770623141] [2024-10-12 00:02:13,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:13,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:13,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:13,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:13,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:13,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-10-12 00:02:13,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 80 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:13,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:13,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-10-12 00:02:13,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:13,484 INFO L124 PetriNetUnfolderBase]: 2182/4853 cut-off events. [2024-10-12 00:02:13,484 INFO L125 PetriNetUnfolderBase]: For 5050/5118 co-relation queries the response was YES. [2024-10-12 00:02:13,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12357 conditions, 4853 events. 2182/4853 cut-off events. For 5050/5118 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 36440 event pairs, 1288 based on Foata normal form. 111/4704 useless extension candidates. Maximal degree in co-relation 12337. Up to 2461 conditions per place. [2024-10-12 00:02:13,511 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 77 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2024-10-12 00:02:13,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 103 transitions, 610 flow [2024-10-12 00:02:13,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-10-12 00:02:13,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5895061728395061 [2024-10-12 00:02:13,512 INFO L175 Difference]: Start difference. First operand has 105 places, 80 transitions, 324 flow. Second operand 4 states and 191 transitions. [2024-10-12 00:02:13,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 103 transitions, 610 flow [2024-10-12 00:02:13,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 103 transitions, 592 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:02:13,534 INFO L231 Difference]: Finished difference. Result has 104 places, 79 transitions, 317 flow [2024-10-12 00:02:13,534 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=104, PETRI_TRANSITIONS=79} [2024-10-12 00:02:13,535 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2024-10-12 00:02:13,535 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 79 transitions, 317 flow [2024-10-12 00:02:13,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:13,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:13,535 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:13,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-12 00:02:13,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:13,736 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:13,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:13,736 INFO L85 PathProgramCache]: Analyzing trace with hash 874829003, now seen corresponding path program 1 times [2024-10-12 00:02:13,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:13,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169891616] [2024-10-12 00:02:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:13,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:13,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:13,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169891616] [2024-10-12 00:02:13,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169891616] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:13,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751739958] [2024-10-12 00:02:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:13,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:13,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:13,822 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:13,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 00:02:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:13,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 00:02:13,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:13,917 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:13,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751739958] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:13,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:13,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 00:02:13,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225819354] [2024-10-12 00:02:13,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:13,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:13,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:13,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:13,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:13,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-10-12 00:02:13,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 79 transitions, 317 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) [2024-10-12 00:02:13,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:13,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-10-12 00:02:13,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:14,379 INFO L124 PetriNetUnfolderBase]: 2263/4918 cut-off events. [2024-10-12 00:02:14,379 INFO L125 PetriNetUnfolderBase]: For 5069/5109 co-relation queries the response was YES. [2024-10-12 00:02:14,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12440 conditions, 4918 events. 2263/4918 cut-off events. For 5069/5109 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 36279 event pairs, 1469 based on Foata normal form. 90/4794 useless extension candidates. Maximal degree in co-relation 12420. Up to 2844 conditions per place. [2024-10-12 00:02:14,399 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 119 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2024-10-12 00:02:14,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 147 transitions, 870 flow [2024-10-12 00:02:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:02:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:02:14,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 257 transitions. [2024-10-12 00:02:14,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6345679012345679 [2024-10-12 00:02:14,401 INFO L175 Difference]: Start difference. First operand has 104 places, 79 transitions, 317 flow. Second operand 5 states and 257 transitions. [2024-10-12 00:02:14,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 147 transitions, 870 flow [2024-10-12 00:02:14,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 147 transitions, 841 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:02:14,421 INFO L231 Difference]: Finished difference. Result has 103 places, 78 transitions, 312 flow [2024-10-12 00:02:14,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=103, PETRI_TRANSITIONS=78} [2024-10-12 00:02:14,422 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2024-10-12 00:02:14,422 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 78 transitions, 312 flow [2024-10-12 00:02:14,422 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) [2024-10-12 00:02:14,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:14,422 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:14,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-12 00:02:14,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-12 00:02:14,623 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:14,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash 874827978, now seen corresponding path program 1 times [2024-10-12 00:02:14,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:14,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691490035] [2024-10-12 00:02:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:14,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:14,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:14,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691490035] [2024-10-12 00:02:14,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691490035] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:14,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64621842] [2024-10-12 00:02:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:14,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:14,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:14,708 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:14,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 00:02:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:14,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 00:02:14,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:14,816 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:14,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64621842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:14,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:14,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 00:02:14,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372017478] [2024-10-12 00:02:14,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:14,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:14,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:14,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:14,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:14,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-10-12 00:02:14,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 78 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:14,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:14,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-10-12 00:02:14,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:15,280 INFO L124 PetriNetUnfolderBase]: 2493/5112 cut-off events. [2024-10-12 00:02:15,280 INFO L125 PetriNetUnfolderBase]: For 4576/4613 co-relation queries the response was YES. [2024-10-12 00:02:15,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13288 conditions, 5112 events. 2493/5112 cut-off events. For 4576/4613 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 36225 event pairs, 1612 based on Foata normal form. 87/4991 useless extension candidates. Maximal degree in co-relation 13268. Up to 3098 conditions per place. [2024-10-12 00:02:15,310 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 94 selfloop transitions, 6 changer transitions 6/125 dead transitions. [2024-10-12 00:02:15,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 125 transitions, 724 flow [2024-10-12 00:02:15,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:15,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:15,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-10-12 00:02:15,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6604938271604939 [2024-10-12 00:02:15,311 INFO L175 Difference]: Start difference. First operand has 103 places, 78 transitions, 312 flow. Second operand 4 states and 214 transitions. [2024-10-12 00:02:15,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 125 transitions, 724 flow [2024-10-12 00:02:15,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 125 transitions, 702 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-12 00:02:15,327 INFO L231 Difference]: Finished difference. Result has 101 places, 78 transitions, 309 flow [2024-10-12 00:02:15,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=309, PETRI_PLACES=101, PETRI_TRANSITIONS=78} [2024-10-12 00:02:15,328 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2024-10-12 00:02:15,328 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 78 transitions, 309 flow [2024-10-12 00:02:15,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:15,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:15,328 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:15,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-12 00:02:15,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-12 00:02:15,529 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:15,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:15,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1082491724, now seen corresponding path program 1 times [2024-10-12 00:02:15,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:15,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867156457] [2024-10-12 00:02:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:15,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:15,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:15,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867156457] [2024-10-12 00:02:15,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867156457] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:15,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163266269] [2024-10-12 00:02:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:15,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:15,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:15,619 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:15,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 00:02:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:15,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:02:15,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:15,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:15,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163266269] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:15,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:15,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-10-12 00:02:15,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198187739] [2024-10-12 00:02:15,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:15,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:02:15,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:15,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:02:15,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 00:02:15,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-10-12 00:02:15,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 78 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:15,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:15,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-10-12 00:02:15,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:16,383 INFO L124 PetriNetUnfolderBase]: 2293/4851 cut-off events. [2024-10-12 00:02:16,383 INFO L125 PetriNetUnfolderBase]: For 4725/4777 co-relation queries the response was YES. [2024-10-12 00:02:16,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12474 conditions, 4851 events. 2293/4851 cut-off events. For 4725/4777 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 34884 event pairs, 1668 based on Foata normal form. 146/4841 useless extension candidates. Maximal degree in co-relation 12455. Up to 3136 conditions per place. [2024-10-12 00:02:16,407 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 125 selfloop transitions, 6 changer transitions 0/150 dead transitions. [2024-10-12 00:02:16,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 150 transitions, 939 flow [2024-10-12 00:02:16,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:02:16,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:02:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 285 transitions. [2024-10-12 00:02:16,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5864197530864198 [2024-10-12 00:02:16,410 INFO L175 Difference]: Start difference. First operand has 101 places, 78 transitions, 309 flow. Second operand 6 states and 285 transitions. [2024-10-12 00:02:16,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 150 transitions, 939 flow [2024-10-12 00:02:16,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 150 transitions, 889 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-12 00:02:16,423 INFO L231 Difference]: Finished difference. Result has 103 places, 77 transitions, 302 flow [2024-10-12 00:02:16,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=103, PETRI_TRANSITIONS=77} [2024-10-12 00:02:16,424 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2024-10-12 00:02:16,424 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 77 transitions, 302 flow [2024-10-12 00:02:16,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:16,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:16,424 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:16,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-12 00:02:16,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-12 00:02:16,625 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:16,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:16,625 INFO L85 PathProgramCache]: Analyzing trace with hash 2078365277, now seen corresponding path program 1 times [2024-10-12 00:02:16,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:16,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261560113] [2024-10-12 00:02:16,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:16,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:16,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:16,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261560113] [2024-10-12 00:02:16,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261560113] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:16,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143465572] [2024-10-12 00:02:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:16,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:16,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:16,708 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:16,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 00:02:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:16,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 00:02:16,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:16,839 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:16,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143465572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:16,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:16,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 00:02:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262586281] [2024-10-12 00:02:16,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:16,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:16,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:16,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-10-12 00:02:16,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 77 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:16,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:16,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-10-12 00:02:16,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:17,238 INFO L124 PetriNetUnfolderBase]: 2223/4722 cut-off events. [2024-10-12 00:02:17,238 INFO L125 PetriNetUnfolderBase]: For 4138/4157 co-relation queries the response was YES. [2024-10-12 00:02:17,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12119 conditions, 4722 events. 2223/4722 cut-off events. For 4138/4157 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 33976 event pairs, 1762 based on Foata normal form. 67/4628 useless extension candidates. Maximal degree in co-relation 12100. Up to 3362 conditions per place. [2024-10-12 00:02:17,259 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 81 selfloop transitions, 3 changer transitions 18/122 dead transitions. [2024-10-12 00:02:17,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 122 transitions, 710 flow [2024-10-12 00:02:17,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:17,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2024-10-12 00:02:17,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6635802469135802 [2024-10-12 00:02:17,260 INFO L175 Difference]: Start difference. First operand has 103 places, 77 transitions, 302 flow. Second operand 4 states and 215 transitions. [2024-10-12 00:02:17,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 122 transitions, 710 flow [2024-10-12 00:02:17,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 122 transitions, 682 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:02:17,273 INFO L231 Difference]: Finished difference. Result has 100 places, 70 transitions, 262 flow [2024-10-12 00:02:17,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=100, PETRI_TRANSITIONS=70} [2024-10-12 00:02:17,274 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2024-10-12 00:02:17,274 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 70 transitions, 262 flow [2024-10-12 00:02:17,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:17,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:17,274 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:17,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-12 00:02:17,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:17,475 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:17,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:17,475 INFO L85 PathProgramCache]: Analyzing trace with hash -802494054, now seen corresponding path program 1 times [2024-10-12 00:02:17,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:17,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004292495] [2024-10-12 00:02:17,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:17,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:17,549 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:17,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:17,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004292495] [2024-10-12 00:02:17,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004292495] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:17,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979418057] [2024-10-12 00:02:17,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:17,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:17,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:17,555 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:17,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-12 00:02:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:17,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:02:17,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:17,754 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:17,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979418057] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:17,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:17,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-10-12 00:02:17,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133322356] [2024-10-12 00:02:17,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:17,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:02:17,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:17,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:02:17,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-12 00:02:17,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-10-12 00:02:17,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 70 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:17,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:17,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-10-12 00:02:17,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:18,168 INFO L124 PetriNetUnfolderBase]: 1859/3990 cut-off events. [2024-10-12 00:02:18,168 INFO L125 PetriNetUnfolderBase]: For 3530/3552 co-relation queries the response was YES. [2024-10-12 00:02:18,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9945 conditions, 3990 events. 1859/3990 cut-off events. For 3530/3552 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 27816 event pairs, 756 based on Foata normal form. 106/4003 useless extension candidates. Maximal degree in co-relation 9927. Up to 1463 conditions per place. [2024-10-12 00:02:18,189 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 141 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-10-12 00:02:18,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 167 transitions, 1026 flow [2024-10-12 00:02:18,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:02:18,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:02:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 327 transitions. [2024-10-12 00:02:18,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5767195767195767 [2024-10-12 00:02:18,190 INFO L175 Difference]: Start difference. First operand has 100 places, 70 transitions, 262 flow. Second operand 7 states and 327 transitions. [2024-10-12 00:02:18,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 167 transitions, 1026 flow [2024-10-12 00:02:18,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 167 transitions, 966 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-10-12 00:02:18,201 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 268 flow [2024-10-12 00:02:18,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=268, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2024-10-12 00:02:18,202 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2024-10-12 00:02:18,202 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 268 flow [2024-10-12 00:02:18,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:18,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:18,202 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:18,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-12 00:02:18,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-12 00:02:18,403 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:18,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:18,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1839806066, now seen corresponding path program 1 times [2024-10-12 00:02:18,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:18,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061922479] [2024-10-12 00:02:18,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:18,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:18,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:18,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061922479] [2024-10-12 00:02:18,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061922479] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:18,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481474609] [2024-10-12 00:02:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:18,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:18,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:18,475 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:18,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-12 00:02:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:18,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 00:02:18,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:18,569 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:18,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481474609] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:18,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:18,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 00:02:18,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937003264] [2024-10-12 00:02:18,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:18,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:18,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:18,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:18,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:18,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-10-12 00:02:18,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:18,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:18,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-10-12 00:02:18,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:18,964 INFO L124 PetriNetUnfolderBase]: 1695/3779 cut-off events. [2024-10-12 00:02:18,964 INFO L125 PetriNetUnfolderBase]: For 3241/3259 co-relation queries the response was YES. [2024-10-12 00:02:18,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9403 conditions, 3779 events. 1695/3779 cut-off events. For 3241/3259 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 26831 event pairs, 1060 based on Foata normal form. 59/3699 useless extension candidates. Maximal degree in co-relation 9386. Up to 2004 conditions per place. [2024-10-12 00:02:18,981 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 118 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2024-10-12 00:02:18,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 142 transitions, 825 flow [2024-10-12 00:02:18,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:02:18,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:02:18,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2024-10-12 00:02:18,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6172839506172839 [2024-10-12 00:02:18,982 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 268 flow. Second operand 5 states and 250 transitions. [2024-10-12 00:02:18,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 142 transitions, 825 flow [2024-10-12 00:02:18,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 142 transitions, 812 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:02:18,994 INFO L231 Difference]: Finished difference. Result has 94 places, 70 transitions, 258 flow [2024-10-12 00:02:18,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=94, PETRI_TRANSITIONS=70} [2024-10-12 00:02:18,995 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 20 predicate places. [2024-10-12 00:02:18,995 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 70 transitions, 258 flow [2024-10-12 00:02:18,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:18,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:18,995 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:19,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-12 00:02:19,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-12 00:02:19,196 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:19,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:19,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1839805041, now seen corresponding path program 1 times [2024-10-12 00:02:19,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:19,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201220841] [2024-10-12 00:02:19,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:19,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:19,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201220841] [2024-10-12 00:02:19,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201220841] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497060563] [2024-10-12 00:02:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:19,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:19,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:19,269 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:19,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-12 00:02:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:19,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 00:02:19,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:19,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:19,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:19,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497060563] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:19,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:19,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 00:02:19,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489317306] [2024-10-12 00:02:19,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:19,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:19,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:19,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:19,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:19,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-10-12 00:02:19,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 70 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:19,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:19,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-10-12 00:02:19,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:19,688 INFO L124 PetriNetUnfolderBase]: 1941/3974 cut-off events. [2024-10-12 00:02:19,688 INFO L125 PetriNetUnfolderBase]: For 3136/3158 co-relation queries the response was YES. [2024-10-12 00:02:19,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10233 conditions, 3974 events. 1941/3974 cut-off events. For 3136/3158 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 26614 event pairs, 1212 based on Foata normal form. 55/3935 useless extension candidates. Maximal degree in co-relation 10216. Up to 2274 conditions per place. [2024-10-12 00:02:19,703 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 73 selfloop transitions, 1 changer transitions 29/119 dead transitions. [2024-10-12 00:02:19,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 119 transitions, 682 flow [2024-10-12 00:02:19,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:19,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-10-12 00:02:19,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6450617283950617 [2024-10-12 00:02:19,704 INFO L175 Difference]: Start difference. First operand has 94 places, 70 transitions, 258 flow. Second operand 4 states and 209 transitions. [2024-10-12 00:02:19,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 119 transitions, 682 flow [2024-10-12 00:02:19,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 119 transitions, 670 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:02:19,718 INFO L231 Difference]: Finished difference. Result has 92 places, 66 transitions, 232 flow [2024-10-12 00:02:19,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=92, PETRI_TRANSITIONS=66} [2024-10-12 00:02:19,718 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 18 predicate places. [2024-10-12 00:02:19,718 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 66 transitions, 232 flow [2024-10-12 00:02:19,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:19,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:19,719 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:19,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-12 00:02:19,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:19,920 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-12 00:02:19,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:19,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1927883189, now seen corresponding path program 1 times [2024-10-12 00:02:19,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:19,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328754711] [2024-10-12 00:02:19,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:19,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:02:19,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:19,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328754711] [2024-10-12 00:02:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328754711] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:02:19,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144155182] [2024-10-12 00:02:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:19,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:19,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:02:19,977 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:02:19,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-12 00:02:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:20,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 00:02:20,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:02:20,079 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:02:20,079 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:02:20,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144155182] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:20,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:02:20,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 00:02:20,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520597109] [2024-10-12 00:02:20,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:20,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:20,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:20,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:20,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:02:20,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-10-12 00:02:20,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 66 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:20,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:20,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-10-12 00:02:20,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:20,314 INFO L124 PetriNetUnfolderBase]: 1285/2772 cut-off events. [2024-10-12 00:02:20,315 INFO L125 PetriNetUnfolderBase]: For 1704/1708 co-relation queries the response was YES. [2024-10-12 00:02:20,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6791 conditions, 2772 events. 1285/2772 cut-off events. For 1704/1708 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 18020 event pairs, 984 based on Foata normal form. 53/2686 useless extension candidates. Maximal degree in co-relation 6775. Up to 1869 conditions per place. [2024-10-12 00:02:20,323 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 0 selfloop transitions, 0 changer transitions 113/113 dead transitions. [2024-10-12 00:02:20,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 632 flow [2024-10-12 00:02:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:20,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-10-12 00:02:20,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-10-12 00:02:20,324 INFO L175 Difference]: Start difference. First operand has 92 places, 66 transitions, 232 flow. Second operand 4 states and 207 transitions. [2024-10-12 00:02:20,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 113 transitions, 632 flow [2024-10-12 00:02:20,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 113 transitions, 624 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-12 00:02:20,330 INFO L231 Difference]: Finished difference. Result has 87 places, 0 transitions, 0 flow [2024-10-12 00:02:20,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=87, PETRI_TRANSITIONS=0} [2024-10-12 00:02:20,331 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2024-10-12 00:02:20,331 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 0 transitions, 0 flow [2024-10-12 00:02:20,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:20,333 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2024-10-12 00:02:20,333 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2024-10-12 00:02:20,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2024-10-12 00:02:20,335 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2024-10-12 00:02:20,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-12 00:02:20,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:02:20,536 INFO L407 BasicCegarLoop]: Path program histogram: [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, 1, 1, 1, 1] [2024-10-12 00:02:20,541 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-12 00:02:20,541 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 00:02:20,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 12:02:20 BasicIcfg [2024-10-12 00:02:20,548 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 00:02:20,549 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 00:02:20,549 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 00:02:20,549 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 00:02:20,549 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:01:55" (3/4) ... [2024-10-12 00:02:20,551 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 00:02:20,553 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-12 00:02:20,553 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-12 00:02:20,557 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 117 nodes and edges [2024-10-12 00:02:20,558 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-10-12 00:02:20,558 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-12 00:02:20,558 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-12 00:02:20,638 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 00:02:20,640 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 00:02:20,640 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 00:02:20,641 INFO L158 Benchmark]: Toolchain (without parser) took 26599.86ms. Allocated memory was 167.8MB in the beginning and 962.6MB in the end (delta: 794.8MB). Free memory was 96.8MB in the beginning and 586.6MB in the end (delta: -489.8MB). Peak memory consumption was 307.3MB. Max. memory is 16.1GB. [2024-10-12 00:02:20,641 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 167.8MB. Free memory is still 120.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:02:20,641 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.57ms. Allocated memory is still 167.8MB. Free memory was 96.6MB in the beginning and 82.6MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-12 00:02:20,641 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.85ms. Allocated memory is still 167.8MB. Free memory was 82.6MB in the beginning and 80.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 00:02:20,641 INFO L158 Benchmark]: Boogie Preprocessor took 72.67ms. Allocated memory is still 167.8MB. Free memory was 80.1MB in the beginning and 77.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 00:02:20,641 INFO L158 Benchmark]: RCFGBuilder took 926.77ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 77.1MB in the beginning and 121.7MB in the end (delta: -44.6MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2024-10-12 00:02:20,642 INFO L158 Benchmark]: TraceAbstraction took 25032.56ms. Allocated memory was 218.1MB in the beginning and 962.6MB in the end (delta: 744.5MB). Free memory was 120.7MB in the beginning and 591.9MB in the end (delta: -471.2MB). Peak memory consumption was 272.2MB. Max. memory is 16.1GB. [2024-10-12 00:02:20,642 INFO L158 Benchmark]: Witness Printer took 91.28ms. Allocated memory is still 962.6MB. Free memory was 591.9MB in the beginning and 586.6MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-12 00:02:20,643 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 167.8MB. Free memory is still 120.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.57ms. Allocated memory is still 167.8MB. Free memory was 96.6MB in the beginning and 82.6MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.85ms. Allocated memory is still 167.8MB. Free memory was 82.6MB in the beginning and 80.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.67ms. Allocated memory is still 167.8MB. Free memory was 80.1MB in the beginning and 77.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 926.77ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 77.1MB in the beginning and 121.7MB in the end (delta: -44.6MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * TraceAbstraction took 25032.56ms. Allocated memory was 218.1MB in the beginning and 962.6MB in the end (delta: 744.5MB). Free memory was 120.7MB in the beginning and 591.9MB in the end (delta: -471.2MB). Peak memory consumption was 272.2MB. Max. memory is 16.1GB. * Witness Printer took 91.28ms. Allocated memory is still 962.6MB. Free memory was 591.9MB in the beginning and 586.6MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 127 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.9s, OverallIterations: 31, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1978 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1711 mSDsluCounter, 138 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 88 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5492 IncrementalHoareTripleChecker+Invalid, 5576 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 50 mSDtfsCounter, 5492 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 717 GetRequests, 516 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=324occurred in iteration=22, InterpolantAutomatonStates: 154, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1175 NumberOfCodeBlocks, 1175 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 1142 ConstructedInterpolants, 0 QuantifiedInterpolants, 2580 SizeOfPredicates, 32 NumberOfNonLiveVariables, 3562 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 54 InterpolantComputations, 29 PerfectInterpolantSequences, 582/634 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-12 00:02:20,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE