./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bc55f480d2dabcba35697f502078f181c178ae095f610e1cdbc5d03f14d18670 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:06:13,806 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:06:13,854 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:06:13,858 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:06:13,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:06:13,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:06:13,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:06:13,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:06:13,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:06:13,892 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:06:13,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:06:13,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:06:13,901 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:06:13,901 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:06:13,901 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:06:13,902 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:06:13,902 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:06:13,902 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:06:13,902 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:06:13,902 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:06:13,903 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:06:13,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:06:13,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:06:13,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:06:13,906 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:06:13,906 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:06:13,907 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:06:13,907 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:06:13,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:06:13,907 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:06:13,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:06:13,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:06:13,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:06:13,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:06:13,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:06:13,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:06:13,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:06:13,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:06:13,909 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:06:13,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:06:13,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:06:13,910 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:06:13,910 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:06:13,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:06:13,911 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc55f480d2dabcba35697f502078f181c178ae095f610e1cdbc5d03f14d18670 [2024-11-19 14:06:14,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:06:14,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:06:14,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:06:14,131 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:06:14,131 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:06:14,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2024-11-19 14:06:15,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:06:15,555 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:06:15,556 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2024-11-19 14:06:15,562 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e765b6f21/ca503b80d083429d94101d29b9d25131/FLAGc08b6c312 [2024-11-19 14:06:15,573 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e765b6f21/ca503b80d083429d94101d29b9d25131 [2024-11-19 14:06:15,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:06:15,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:06:15,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:06:15,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:06:15,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:06:15,582 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:06:15" (1/1) ... [2024-11-19 14:06:15,583 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee6ad55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15, skipping insertion in model container [2024-11-19 14:06:15,583 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:06:15" (1/1) ... [2024-11-19 14:06:15,600 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:06:15,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:06:15,801 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:06:15,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:06:15,839 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:06:15,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15 WrapperNode [2024-11-19 14:06:15,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:06:15,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:06:15,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:06:15,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:06:15,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15" (1/1) ... [2024-11-19 14:06:15,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15" (1/1) ... [2024-11-19 14:06:15,870 INFO L138 Inliner]: procedures = 21, calls = 22, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 147 [2024-11-19 14:06:15,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:06:15,872 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:06:15,872 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:06:15,872 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:06:15,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15" (1/1) ... [2024-11-19 14:06:15,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15" (1/1) ... [2024-11-19 14:06:15,886 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15" (1/1) ... [2024-11-19 14:06:15,906 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 14:06:15,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15" (1/1) ... [2024-11-19 14:06:15,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15" (1/1) ... [2024-11-19 14:06:15,912 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15" (1/1) ... [2024-11-19 14:06:15,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15" (1/1) ... [2024-11-19 14:06:15,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15" (1/1) ... [2024-11-19 14:06:15,917 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15" (1/1) ... [2024-11-19 14:06:15,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:06:15,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:06:15,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:06:15,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:06:15,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15" (1/1) ... [2024-11-19 14:06:15,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:06:15,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:15,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:06:15,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:06:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:06:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:06:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:06:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:06:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:06:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:06:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:06:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:06:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:06:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:06:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:06:16,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:06:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:06:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:06:16,021 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:06:16,122 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:06:16,124 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:06:16,335 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:06:16,335 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:06:16,521 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:06:16,521 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 14:06:16,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:06:16 BoogieIcfgContainer [2024-11-19 14:06:16,522 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:06:16,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:06:16,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:06:16,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:06:16,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:06:15" (1/3) ... [2024-11-19 14:06:16,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f078e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:06:16, skipping insertion in model container [2024-11-19 14:06:16,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:15" (2/3) ... [2024-11-19 14:06:16,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f078e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:06:16, skipping insertion in model container [2024-11-19 14:06:16,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:06:16" (3/3) ... [2024-11-19 14:06:16,531 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2024-11-19 14:06:16,544 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:06:16,544 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-19 14:06:16,544 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:06:16,594 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 14:06:16,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-11-19 14:06:16,699 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-11-19 14:06:16,699 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:06:16,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 110 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-19 14:06:16,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-11-19 14:06:16,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-11-19 14:06:16,716 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:06:16,723 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;@50cce93d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:06:16,723 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-19 14:06:16,727 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:06:16,727 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-19 14:06:16,728 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:06:16,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:16,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:16,732 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:16,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:16,737 INFO L85 PathProgramCache]: Analyzing trace with hash -618573492, now seen corresponding path program 1 times [2024-11-19 14:06:16,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:16,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681749616] [2024-11-19 14:06:16,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:16,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:16,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:16,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681749616] [2024-11-19 14:06:16,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681749616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:16,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:16,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:16,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041326876] [2024-11-19 14:06:16,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:16,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:16,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:17,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:17,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:17,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 14:06:17,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:17,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:17,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 14:06:17,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:17,172 INFO L124 PetriNetUnfolderBase]: 368/644 cut-off events. [2024-11-19 14:06:17,172 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-19 14:06:17,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1247 conditions, 644 events. 368/644 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3023 event pairs, 277 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 1143. Up to 568 conditions per place. [2024-11-19 14:06:17,180 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 30 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-11-19 14:06:17,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 169 flow [2024-11-19 14:06:17,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:17,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-19 14:06:17,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-11-19 14:06:17,193 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 4 states and 93 transitions. [2024-11-19 14:06:17,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 169 flow [2024-11-19 14:06:17,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:06:17,200 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 119 flow [2024-11-19 14:06:17,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2024-11-19 14:06:17,206 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-19 14:06:17,208 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 119 flow [2024-11-19 14:06:17,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:17,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:17,209 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:17,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:06:17,209 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:17,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:17,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1782226269, now seen corresponding path program 1 times [2024-11-19 14:06:17,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:17,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515139224] [2024-11-19 14:06:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:17,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:17,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:17,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515139224] [2024-11-19 14:06:17,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515139224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:17,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752866864] [2024-11-19 14:06:17,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:17,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:17,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:17,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:17,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:06:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:17,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:17,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:17,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:17,482 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:17,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752866864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:17,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:17,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 14:06:17,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602242717] [2024-11-19 14:06:17,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:17,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:06:17,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:17,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:06:17,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:06:17,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 14:06:17,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:17,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:17,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 14:06:17,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:17,683 INFO L124 PetriNetUnfolderBase]: 368/643 cut-off events. [2024-11-19 14:06:17,683 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-19 14:06:17,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 643 events. 368/643 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3039 event pairs, 277 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 1215. Up to 563 conditions per place. [2024-11-19 14:06:17,689 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 26 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2024-11-19 14:06:17,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 181 flow [2024-11-19 14:06:17,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:06:17,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:06:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-11-19 14:06:17,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-11-19 14:06:17,691 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 119 flow. Second operand 6 states and 118 transitions. [2024-11-19 14:06:17,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 181 flow [2024-11-19 14:06:17,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:17,692 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 126 flow [2024-11-19 14:06:17,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-11-19 14:06:17,693 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2024-11-19 14:06:17,694 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 126 flow [2024-11-19 14:06:17,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:17,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:17,694 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:17,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:17,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:17,896 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:17,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:17,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1784887094, now seen corresponding path program 1 times [2024-11-19 14:06:17,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:17,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16380902] [2024-11-19 14:06:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:17,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:17,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:17,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16380902] [2024-11-19 14:06:17,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16380902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:17,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:17,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:17,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671690901] [2024-11-19 14:06:17,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:17,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:17,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:17,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:17,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:17,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 14:06:17,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:17,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:17,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 14:06:17,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:18,076 INFO L124 PetriNetUnfolderBase]: 364/661 cut-off events. [2024-11-19 14:06:18,077 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-19 14:06:18,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 661 events. 364/661 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2940 event pairs, 160 based on Foata normal form. 0/431 useless extension candidates. Maximal degree in co-relation 1274. Up to 432 conditions per place. [2024-11-19 14:06:18,080 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 41 selfloop transitions, 6 changer transitions 2/60 dead transitions. [2024-11-19 14:06:18,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 255 flow [2024-11-19 14:06:18,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:18,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-19 14:06:18,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2024-11-19 14:06:18,083 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 126 flow. Second operand 3 states and 89 transitions. [2024-11-19 14:06:18,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 255 flow [2024-11-19 14:06:18,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 233 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-19 14:06:18,087 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 142 flow [2024-11-19 14:06:18,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2024-11-19 14:06:18,088 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-11-19 14:06:18,089 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 142 flow [2024-11-19 14:06:18,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:18,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:18,089 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:18,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 14:06:18,090 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:18,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:18,090 INFO L85 PathProgramCache]: Analyzing trace with hash -585560046, now seen corresponding path program 1 times [2024-11-19 14:06:18,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:18,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711947512] [2024-11-19 14:06:18,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:18,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:18,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:18,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711947512] [2024-11-19 14:06:18,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711947512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:18,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567834341] [2024-11-19 14:06:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:18,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:18,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:18,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:18,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:06:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:18,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:18,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:18,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:18,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:18,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567834341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:18,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:18,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:06:18,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966155023] [2024-11-19 14:06:18,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:18,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:06:18,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:18,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:06:18,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:06:18,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 14:06:18,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 142 flow. Second operand has 12 states, 12 states have (on average 15.166666666666666) internal successors, (182), 12 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:18,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:18,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 14:06:18,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:18,427 INFO L124 PetriNetUnfolderBase]: 367/745 cut-off events. [2024-11-19 14:06:18,427 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2024-11-19 14:06:18,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1617 conditions, 745 events. 367/745 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3599 event pairs, 256 based on Foata normal form. 3/587 useless extension candidates. Maximal degree in co-relation 1566. Up to 618 conditions per place. [2024-11-19 14:06:18,431 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 32 selfloop transitions, 13 changer transitions 0/57 dead transitions. [2024-11-19 14:06:18,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 262 flow [2024-11-19 14:06:18,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:06:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:06:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-11-19 14:06:18,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-11-19 14:06:18,433 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 142 flow. Second operand 10 states and 185 transitions. [2024-11-19 14:06:18,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 262 flow [2024-11-19 14:06:18,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:18,435 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 204 flow [2024-11-19 14:06:18,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=204, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-11-19 14:06:18,436 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-11-19 14:06:18,437 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 204 flow [2024-11-19 14:06:18,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.166666666666666) internal successors, (182), 12 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:18,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:18,437 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:18,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:18,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-19 14:06:18,642 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:18,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:18,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2038170778, now seen corresponding path program 1 times [2024-11-19 14:06:18,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:18,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697440939] [2024-11-19 14:06:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:18,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:18,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:18,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697440939] [2024-11-19 14:06:18,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697440939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:18,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:18,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:18,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906638896] [2024-11-19 14:06:18,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:18,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:18,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:18,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:18,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:18,699 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 14:06:18,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:18,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:18,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 14:06:18,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:18,774 INFO L124 PetriNetUnfolderBase]: 315/590 cut-off events. [2024-11-19 14:06:18,774 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-11-19 14:06:18,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 590 events. 315/590 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2687 event pairs, 112 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 1288. Up to 473 conditions per place. [2024-11-19 14:06:18,777 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 45 selfloop transitions, 3 changer transitions 2/62 dead transitions. [2024-11-19 14:06:18,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 317 flow [2024-11-19 14:06:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:18,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-19 14:06:18,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-11-19 14:06:18,779 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 204 flow. Second operand 3 states and 82 transitions. [2024-11-19 14:06:18,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 317 flow [2024-11-19 14:06:18,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 306 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:18,781 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 202 flow [2024-11-19 14:06:18,781 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-11-19 14:06:18,782 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2024-11-19 14:06:18,782 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 202 flow [2024-11-19 14:06:18,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:18,782 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:18,782 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:18,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:06:18,782 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:18,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:18,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2038170779, now seen corresponding path program 1 times [2024-11-19 14:06:18,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:18,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86125501] [2024-11-19 14:06:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:18,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:18,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:18,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:18,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86125501] [2024-11-19 14:06:18,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86125501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:18,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:18,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:06:18,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372754886] [2024-11-19 14:06:18,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:18,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:18,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:18,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:18,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:18,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-19 14:06:18,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:18,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:18,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-19 14:06:18,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:18,923 INFO L124 PetriNetUnfolderBase]: 337/659 cut-off events. [2024-11-19 14:06:18,923 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-11-19 14:06:18,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 659 events. 337/659 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3034 event pairs, 245 based on Foata normal form. 5/542 useless extension candidates. Maximal degree in co-relation 1452. Up to 538 conditions per place. [2024-11-19 14:06:18,926 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 39 selfloop transitions, 3 changer transitions 11/66 dead transitions. [2024-11-19 14:06:18,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 334 flow [2024-11-19 14:06:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:18,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-19 14:06:18,928 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-11-19 14:06:18,928 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 202 flow. Second operand 4 states and 105 transitions. [2024-11-19 14:06:18,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 334 flow [2024-11-19 14:06:18,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:18,930 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 206 flow [2024-11-19 14:06:18,930 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-11-19 14:06:18,931 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-11-19 14:06:18,931 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 206 flow [2024-11-19 14:06:18,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:18,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:18,931 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:18,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:06:18,931 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:18,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:18,932 INFO L85 PathProgramCache]: Analyzing trace with hash 730411882, now seen corresponding path program 1 times [2024-11-19 14:06:18,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:18,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013899066] [2024-11-19 14:06:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:18,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:19,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:19,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:19,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013899066] [2024-11-19 14:06:19,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013899066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:19,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918304544] [2024-11-19 14:06:19,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:19,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:19,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:19,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:19,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:06:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:19,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:06:19,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:19,108 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:19,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918304544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:19,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:19,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-19 14:06:19,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919796766] [2024-11-19 14:06:19,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:19,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:19,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:19,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:19,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 14:06:19,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 14:06:19,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:19,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:19,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 14:06:19,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:19,194 INFO L124 PetriNetUnfolderBase]: 255/504 cut-off events. [2024-11-19 14:06:19,194 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-11-19 14:06:19,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 504 events. 255/504 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2184 event pairs, 107 based on Foata normal form. 40/439 useless extension candidates. Maximal degree in co-relation 1113. Up to 292 conditions per place. [2024-11-19 14:06:19,197 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 38 selfloop transitions, 8 changer transitions 4/62 dead transitions. [2024-11-19 14:06:19,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 327 flow [2024-11-19 14:06:19,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:19,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-19 14:06:19,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 14:06:19,198 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 206 flow. Second operand 4 states and 96 transitions. [2024-11-19 14:06:19,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 327 flow [2024-11-19 14:06:19,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 317 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-19 14:06:19,201 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 204 flow [2024-11-19 14:06:19,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-11-19 14:06:19,202 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2024-11-19 14:06:19,202 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 204 flow [2024-11-19 14:06:19,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:19,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:19,202 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:19,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:06:19,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:19,404 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:19,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:19,405 INFO L85 PathProgramCache]: Analyzing trace with hash 633554243, now seen corresponding path program 2 times [2024-11-19 14:06:19,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:19,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141232394] [2024-11-19 14:06:19,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:19,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:19,417 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:19,418 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:19,446 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:19,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:19,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141232394] [2024-11-19 14:06:19,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141232394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:19,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423538647] [2024-11-19 14:06:19,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:19,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:19,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:19,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:19,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:06:19,498 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:19,498 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:19,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:06:19,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:19,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:19,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423538647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:19,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:19,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-19 14:06:19,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465001563] [2024-11-19 14:06:19,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:19,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:19,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:19,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:19,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:19,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 14:06:19,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:19,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:19,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 14:06:19,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:19,620 INFO L124 PetriNetUnfolderBase]: 228/461 cut-off events. [2024-11-19 14:06:19,620 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2024-11-19 14:06:19,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 461 events. 228/461 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1927 event pairs, 157 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1054. Up to 387 conditions per place. [2024-11-19 14:06:19,622 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 24 selfloop transitions, 15 changer transitions 0/51 dead transitions. [2024-11-19 14:06:19,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 272 flow [2024-11-19 14:06:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:19,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-19 14:06:19,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-11-19 14:06:19,623 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 204 flow. Second operand 4 states and 82 transitions. [2024-11-19 14:06:19,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 272 flow [2024-11-19 14:06:19,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 246 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-19 14:06:19,627 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 198 flow [2024-11-19 14:06:19,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-19 14:06:19,628 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2024-11-19 14:06:19,629 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 198 flow [2024-11-19 14:06:19,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:19,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:19,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:19,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:06:19,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:19,830 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:19,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:19,831 INFO L85 PathProgramCache]: Analyzing trace with hash 768069729, now seen corresponding path program 1 times [2024-11-19 14:06:19,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:19,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005630594] [2024-11-19 14:06:19,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:19,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:19,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:19,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:19,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005630594] [2024-11-19 14:06:19,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005630594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:19,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:19,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:19,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421475857] [2024-11-19 14:06:19,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:19,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:19,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:19,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:19,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:19,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 14:06:19,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:19,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:19,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 14:06:19,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:19,949 INFO L124 PetriNetUnfolderBase]: 239/534 cut-off events. [2024-11-19 14:06:19,949 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-19 14:06:19,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 534 events. 239/534 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2324 event pairs, 65 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 1070. Up to 273 conditions per place. [2024-11-19 14:06:19,951 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 48 selfloop transitions, 3 changer transitions 2/64 dead transitions. [2024-11-19 14:06:19,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 64 transitions, 345 flow [2024-11-19 14:06:19,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:19,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-11-19 14:06:19,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-11-19 14:06:19,952 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 198 flow. Second operand 3 states and 83 transitions. [2024-11-19 14:06:19,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 64 transitions, 345 flow [2024-11-19 14:06:19,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 315 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:06:19,954 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 181 flow [2024-11-19 14:06:19,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-11-19 14:06:19,955 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2024-11-19 14:06:19,955 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 181 flow [2024-11-19 14:06:19,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:19,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:19,956 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:19,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 14:06:19,956 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:19,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:19,957 INFO L85 PathProgramCache]: Analyzing trace with hash 768069730, now seen corresponding path program 1 times [2024-11-19 14:06:19,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:19,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740038623] [2024-11-19 14:06:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:19,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:20,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:20,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:20,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740038623] [2024-11-19 14:06:20,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740038623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:20,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444532844] [2024-11-19 14:06:20,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:20,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:20,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:20,102 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:20,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:06:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:20,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:20,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:20,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:20,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444532844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:20,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:20,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-19 14:06:20,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39692683] [2024-11-19 14:06:20,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:20,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:06:20,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:20,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:06:20,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:06:20,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 14:06:20,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:20,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:20,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 14:06:20,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:20,358 INFO L124 PetriNetUnfolderBase]: 299/650 cut-off events. [2024-11-19 14:06:20,358 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-11-19 14:06:20,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 650 events. 299/650 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2936 event pairs, 50 based on Foata normal form. 0/580 useless extension candidates. Maximal degree in co-relation 1356. Up to 210 conditions per place. [2024-11-19 14:06:20,360 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 63 selfloop transitions, 11 changer transitions 4/88 dead transitions. [2024-11-19 14:06:20,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 436 flow [2024-11-19 14:06:20,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:06:20,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:06:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-11-19 14:06:20,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-11-19 14:06:20,361 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 181 flow. Second operand 6 states and 149 transitions. [2024-11-19 14:06:20,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 436 flow [2024-11-19 14:06:20,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 88 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:20,363 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 233 flow [2024-11-19 14:06:20,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-11-19 14:06:20,365 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-11-19 14:06:20,365 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 233 flow [2024-11-19 14:06:20,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:20,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:20,365 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:20,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 14:06:20,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 14:06:20,566 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:20,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:20,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2029646484, now seen corresponding path program 1 times [2024-11-19 14:06:20,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:20,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234474851] [2024-11-19 14:06:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:20,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:20,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:20,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234474851] [2024-11-19 14:06:20,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234474851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:20,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491410750] [2024-11-19 14:06:20,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:20,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:20,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:20,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:20,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:06:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:21,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 14:06:21,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:21,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:06:21,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 14:06:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:21,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:21,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-19 14:06:21,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-19 14:06:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:21,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491410750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:21,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:21,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-11-19 14:06:21,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374698489] [2024-11-19 14:06:21,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:21,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 14:06:21,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:21,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 14:06:21,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2024-11-19 14:06:21,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-11-19 14:06:21,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 233 flow. Second operand has 25 states, 25 states have (on average 11.08) internal successors, (277), 25 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:21,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:21,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-11-19 14:06:21,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:22,966 INFO L124 PetriNetUnfolderBase]: 785/1532 cut-off events. [2024-11-19 14:06:22,967 INFO L125 PetriNetUnfolderBase]: For 656/656 co-relation queries the response was YES. [2024-11-19 14:06:22,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3733 conditions, 1532 events. 785/1532 cut-off events. For 656/656 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8455 event pairs, 149 based on Foata normal form. 0/1362 useless extension candidates. Maximal degree in co-relation 3385. Up to 321 conditions per place. [2024-11-19 14:06:22,974 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 134 selfloop transitions, 32 changer transitions 8/181 dead transitions. [2024-11-19 14:06:22,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 181 transitions, 970 flow [2024-11-19 14:06:22,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 14:06:22,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 14:06:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 343 transitions. [2024-11-19 14:06:22,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3572916666666667 [2024-11-19 14:06:22,976 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 233 flow. Second operand 20 states and 343 transitions. [2024-11-19 14:06:22,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 181 transitions, 970 flow [2024-11-19 14:06:22,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 181 transitions, 965 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:22,982 INFO L231 Difference]: Finished difference. Result has 84 places, 66 transitions, 383 flow [2024-11-19 14:06:22,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=383, PETRI_PLACES=84, PETRI_TRANSITIONS=66} [2024-11-19 14:06:22,983 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2024-11-19 14:06:22,983 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 66 transitions, 383 flow [2024-11-19 14:06:22,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.08) internal successors, (277), 25 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:22,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:22,984 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:22,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 14:06:23,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:23,185 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:23,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:23,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2019951938, now seen corresponding path program 1 times [2024-11-19 14:06:23,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:23,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566393234] [2024-11-19 14:06:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:23,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:23,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:23,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:23,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566393234] [2024-11-19 14:06:23,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566393234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:23,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575276498] [2024-11-19 14:06:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:23,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:23,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:23,523 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:23,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:06:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:23,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 14:06:23,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:23,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:06:23,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 14:06:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:23,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:24,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-19 14:06:24,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-19 14:06:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:24,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575276498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:24,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:24,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 25 [2024-11-19 14:06:24,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302496130] [2024-11-19 14:06:24,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:24,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 14:06:24,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:24,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 14:06:24,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2024-11-19 14:06:24,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-11-19 14:06:24,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 66 transitions, 383 flow. Second operand has 27 states, 27 states have (on average 11.925925925925926) internal successors, (322), 27 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:24,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:24,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-11-19 14:06:24,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:25,892 INFO L124 PetriNetUnfolderBase]: 903/1834 cut-off events. [2024-11-19 14:06:25,892 INFO L125 PetriNetUnfolderBase]: For 1607/1617 co-relation queries the response was YES. [2024-11-19 14:06:25,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5066 conditions, 1834 events. 903/1834 cut-off events. For 1607/1617 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 11108 event pairs, 152 based on Foata normal form. 54/1781 useless extension candidates. Maximal degree in co-relation 4701. Up to 346 conditions per place. [2024-11-19 14:06:25,901 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 150 selfloop transitions, 50 changer transitions 19/229 dead transitions. [2024-11-19 14:06:25,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 229 transitions, 1382 flow [2024-11-19 14:06:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 14:06:25,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-19 14:06:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 478 transitions. [2024-11-19 14:06:25,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36882716049382713 [2024-11-19 14:06:25,903 INFO L175 Difference]: Start difference. First operand has 84 places, 66 transitions, 383 flow. Second operand 27 states and 478 transitions. [2024-11-19 14:06:25,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 229 transitions, 1382 flow [2024-11-19 14:06:25,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 229 transitions, 1347 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-19 14:06:25,911 INFO L231 Difference]: Finished difference. Result has 113 places, 86 transitions, 654 flow [2024-11-19 14:06:25,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=654, PETRI_PLACES=113, PETRI_TRANSITIONS=86} [2024-11-19 14:06:25,913 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2024-11-19 14:06:25,913 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 86 transitions, 654 flow [2024-11-19 14:06:25,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.925925925925926) internal successors, (322), 27 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:25,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:25,914 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:25,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 14:06:26,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:26,115 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:26,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:26,115 INFO L85 PathProgramCache]: Analyzing trace with hash 649290098, now seen corresponding path program 1 times [2024-11-19 14:06:26,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:26,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175268158] [2024-11-19 14:06:26,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:26,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:26,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:26,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175268158] [2024-11-19 14:06:26,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175268158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:26,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:26,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:06:26,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854332954] [2024-11-19 14:06:26,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:26,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:26,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:26,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:26,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:26,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 14:06:26,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 86 transitions, 654 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:26,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:26,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 14:06:26,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:26,432 INFO L124 PetriNetUnfolderBase]: 1510/2955 cut-off events. [2024-11-19 14:06:26,432 INFO L125 PetriNetUnfolderBase]: For 8755/8883 co-relation queries the response was YES. [2024-11-19 14:06:26,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10495 conditions, 2955 events. 1510/2955 cut-off events. For 8755/8883 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 18446 event pairs, 365 based on Foata normal form. 58/2980 useless extension candidates. Maximal degree in co-relation 9905. Up to 1026 conditions per place. [2024-11-19 14:06:26,450 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 100 selfloop transitions, 28 changer transitions 5/146 dead transitions. [2024-11-19 14:06:26,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 146 transitions, 1384 flow [2024-11-19 14:06:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:26,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-19 14:06:26,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-11-19 14:06:26,452 INFO L175 Difference]: Start difference. First operand has 113 places, 86 transitions, 654 flow. Second operand 4 states and 110 transitions. [2024-11-19 14:06:26,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 146 transitions, 1384 flow [2024-11-19 14:06:26,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 146 transitions, 1228 flow, removed 29 selfloop flow, removed 16 redundant places. [2024-11-19 14:06:26,469 INFO L231 Difference]: Finished difference. Result has 102 places, 107 transitions, 868 flow [2024-11-19 14:06:26,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=868, PETRI_PLACES=102, PETRI_TRANSITIONS=107} [2024-11-19 14:06:26,471 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2024-11-19 14:06:26,471 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 107 transitions, 868 flow [2024-11-19 14:06:26,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:26,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:26,471 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:26,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 14:06:26,472 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:26,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:26,472 INFO L85 PathProgramCache]: Analyzing trace with hash -813534894, now seen corresponding path program 1 times [2024-11-19 14:06:26,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:26,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209863993] [2024-11-19 14:06:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:26,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:06:26,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:26,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209863993] [2024-11-19 14:06:26,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209863993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:26,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:26,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:26,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179640381] [2024-11-19 14:06:26,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:26,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:26,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:26,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:26,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:26,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 14:06:26,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 107 transitions, 868 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:26,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:26,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 14:06:26,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:26,773 INFO L124 PetriNetUnfolderBase]: 1425/2856 cut-off events. [2024-11-19 14:06:26,773 INFO L125 PetriNetUnfolderBase]: For 8628/8721 co-relation queries the response was YES. [2024-11-19 14:06:26,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10453 conditions, 2856 events. 1425/2856 cut-off events. For 8628/8721 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 18299 event pairs, 637 based on Foata normal form. 37/2888 useless extension candidates. Maximal degree in co-relation 10201. Up to 2323 conditions per place. [2024-11-19 14:06:26,794 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 90 selfloop transitions, 2 changer transitions 7/113 dead transitions. [2024-11-19 14:06:26,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 113 transitions, 1078 flow [2024-11-19 14:06:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-19 14:06:26,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-19 14:06:26,795 INFO L175 Difference]: Start difference. First operand has 102 places, 107 transitions, 868 flow. Second operand 3 states and 84 transitions. [2024-11-19 14:06:26,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 113 transitions, 1078 flow [2024-11-19 14:06:26,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 113 transitions, 1068 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:26,809 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 731 flow [2024-11-19 14:06:26,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=731, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-11-19 14:06:26,810 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 54 predicate places. [2024-11-19 14:06:26,810 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 731 flow [2024-11-19 14:06:26,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:26,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:26,810 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:26,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 14:06:26,810 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:26,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:26,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1786926028, now seen corresponding path program 2 times [2024-11-19 14:06:26,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:26,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778563443] [2024-11-19 14:06:26,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:26,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:26,839 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:26,839 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:06:26,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:26,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778563443] [2024-11-19 14:06:26,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778563443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:26,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:26,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 14:06:26,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783545316] [2024-11-19 14:06:26,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:26,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 14:06:26,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:26,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 14:06:26,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:06:26,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-11-19 14:06:26,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 731 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:26,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:26,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-11-19 14:06:26,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:27,234 INFO L124 PetriNetUnfolderBase]: 1391/2769 cut-off events. [2024-11-19 14:06:27,234 INFO L125 PetriNetUnfolderBase]: For 7419/7451 co-relation queries the response was YES. [2024-11-19 14:06:27,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10140 conditions, 2769 events. 1391/2769 cut-off events. For 7419/7451 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 17088 event pairs, 161 based on Foata normal form. 88/2826 useless extension candidates. Maximal degree in co-relation 9516. Up to 1269 conditions per place. [2024-11-19 14:06:27,251 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 102 selfloop transitions, 21 changer transitions 5/139 dead transitions. [2024-11-19 14:06:27,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 139 transitions, 1304 flow [2024-11-19 14:06:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 14:06:27,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 14:06:27,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-11-19 14:06:27,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4322916666666667 [2024-11-19 14:06:27,254 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 731 flow. Second operand 8 states and 166 transitions. [2024-11-19 14:06:27,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 139 transitions, 1304 flow [2024-11-19 14:06:27,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 139 transitions, 1295 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:27,269 INFO L231 Difference]: Finished difference. Result has 107 places, 94 transitions, 783 flow [2024-11-19 14:06:27,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=783, PETRI_PLACES=107, PETRI_TRANSITIONS=94} [2024-11-19 14:06:27,270 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 61 predicate places. [2024-11-19 14:06:27,270 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 94 transitions, 783 flow [2024-11-19 14:06:27,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:27,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:27,270 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:27,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 14:06:27,271 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:27,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:27,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1457840959, now seen corresponding path program 1 times [2024-11-19 14:06:27,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:27,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329837103] [2024-11-19 14:06:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:27,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:27,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:27,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329837103] [2024-11-19 14:06:27,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329837103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:27,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369917122] [2024-11-19 14:06:27,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:27,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:27,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:27,396 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:27,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:06:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:27,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:06:27,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:27,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:27,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369917122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:27,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:27,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2024-11-19 14:06:27,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695727204] [2024-11-19 14:06:27,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:27,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 14:06:27,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:27,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 14:06:27,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-19 14:06:27,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-11-19 14:06:27,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 94 transitions, 783 flow. Second operand has 20 states, 20 states have (on average 14.6) internal successors, (292), 20 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:27,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:27,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-11-19 14:06:27,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:28,220 INFO L124 PetriNetUnfolderBase]: 824/1744 cut-off events. [2024-11-19 14:06:28,220 INFO L125 PetriNetUnfolderBase]: For 6110/6122 co-relation queries the response was YES. [2024-11-19 14:06:28,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6754 conditions, 1744 events. 824/1744 cut-off events. For 6110/6122 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9884 event pairs, 292 based on Foata normal form. 19/1734 useless extension candidates. Maximal degree in co-relation 6331. Up to 649 conditions per place. [2024-11-19 14:06:28,230 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 52 selfloop transitions, 21 changer transitions 27/113 dead transitions. [2024-11-19 14:06:28,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 113 transitions, 990 flow [2024-11-19 14:06:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 14:06:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 14:06:28,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 227 transitions. [2024-11-19 14:06:28,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36378205128205127 [2024-11-19 14:06:28,231 INFO L175 Difference]: Start difference. First operand has 107 places, 94 transitions, 783 flow. Second operand 13 states and 227 transitions. [2024-11-19 14:06:28,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 113 transitions, 990 flow [2024-11-19 14:06:28,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 113 transitions, 916 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-11-19 14:06:28,242 INFO L231 Difference]: Finished difference. Result has 112 places, 73 transitions, 569 flow [2024-11-19 14:06:28,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=569, PETRI_PLACES=112, PETRI_TRANSITIONS=73} [2024-11-19 14:06:28,243 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 66 predicate places. [2024-11-19 14:06:28,243 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 73 transitions, 569 flow [2024-11-19 14:06:28,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.6) internal successors, (292), 20 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:28,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:28,244 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:28,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 14:06:28,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 14:06:28,445 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:28,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:28,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1106538982, now seen corresponding path program 2 times [2024-11-19 14:06:28,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:28,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772551103] [2024-11-19 14:06:28,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:28,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:28,460 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:28,460 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:06:28,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:28,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772551103] [2024-11-19 14:06:28,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772551103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:28,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913112019] [2024-11-19 14:06:28,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:28,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:28,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:28,483 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:28,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:06:28,549 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:28,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:28,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:06:28,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:06:28,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:06:28,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913112019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:28,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:28,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-19 14:06:28,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677249230] [2024-11-19 14:06:28,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:28,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:06:28,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:06:28,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:06:28,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 14:06:28,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 73 transitions, 569 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:28,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:28,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 14:06:28,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:28,784 INFO L124 PetriNetUnfolderBase]: 709/1439 cut-off events. [2024-11-19 14:06:28,784 INFO L125 PetriNetUnfolderBase]: For 4782/4806 co-relation queries the response was YES. [2024-11-19 14:06:28,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5570 conditions, 1439 events. 709/1439 cut-off events. For 4782/4806 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7683 event pairs, 330 based on Foata normal form. 32/1448 useless extension candidates. Maximal degree in co-relation 5319. Up to 921 conditions per place. [2024-11-19 14:06:28,790 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 57 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-11-19 14:06:28,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 83 transitions, 767 flow [2024-11-19 14:06:28,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:28,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:28,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-19 14:06:28,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-11-19 14:06:28,792 INFO L175 Difference]: Start difference. First operand has 112 places, 73 transitions, 569 flow. Second operand 4 states and 94 transitions. [2024-11-19 14:06:28,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 83 transitions, 767 flow [2024-11-19 14:06:28,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 692 flow, removed 7 selfloop flow, removed 17 redundant places. [2024-11-19 14:06:28,799 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 516 flow [2024-11-19 14:06:28,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=516, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-11-19 14:06:28,799 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 42 predicate places. [2024-11-19 14:06:28,799 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 516 flow [2024-11-19 14:06:28,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:28,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:28,801 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:28,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 14:06:29,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 14:06:29,001 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:29,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:29,002 INFO L85 PathProgramCache]: Analyzing trace with hash -245812306, now seen corresponding path program 1 times [2024-11-19 14:06:29,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:29,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398824957] [2024-11-19 14:06:29,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:29,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:29,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:29,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398824957] [2024-11-19 14:06:29,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398824957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:29,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383990785] [2024-11-19 14:06:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:29,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:29,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:29,778 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:29,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 14:06:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:29,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-19 14:06:29,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:29,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:06:30,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:06:30,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2024-11-19 14:06:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:30,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:30,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 52 [2024-11-19 14:06:30,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:06:30,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 103 [2024-11-19 14:06:31,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:31,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383990785] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:31,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:31,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2024-11-19 14:06:31,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031100503] [2024-11-19 14:06:31,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:31,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-19 14:06:31,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:31,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-19 14:06:31,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1869, Unknown=0, NotChecked=0, Total=2162 [2024-11-19 14:06:31,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-11-19 14:06:31,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 516 flow. Second operand has 47 states, 47 states have (on average 10.787234042553191) internal successors, (507), 47 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:31,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:31,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-11-19 14:06:31,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:38,397 INFO L124 PetriNetUnfolderBase]: 3472/6286 cut-off events. [2024-11-19 14:06:38,397 INFO L125 PetriNetUnfolderBase]: For 19192/19192 co-relation queries the response was YES. [2024-11-19 14:06:38,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22388 conditions, 6286 events. 3472/6286 cut-off events. For 19192/19192 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 40921 event pairs, 123 based on Foata normal form. 380/6662 useless extension candidates. Maximal degree in co-relation 12190. Up to 1116 conditions per place. [2024-11-19 14:06:38,429 INFO L140 encePairwiseOnDemand]: 29/48 looper letters, 414 selfloop transitions, 269 changer transitions 110/801 dead transitions. [2024-11-19 14:06:38,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 801 transitions, 6329 flow [2024-11-19 14:06:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-19 14:06:38,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2024-11-19 14:06:38,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 1592 transitions. [2024-11-19 14:06:38,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33166666666666667 [2024-11-19 14:06:38,436 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 516 flow. Second operand 100 states and 1592 transitions. [2024-11-19 14:06:38,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 801 transitions, 6329 flow [2024-11-19 14:06:38,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 801 transitions, 6193 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:06:38,459 INFO L231 Difference]: Finished difference. Result has 233 places, 372 transitions, 4243 flow [2024-11-19 14:06:38,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=100, PETRI_FLOW=4243, PETRI_PLACES=233, PETRI_TRANSITIONS=372} [2024-11-19 14:06:38,459 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 187 predicate places. [2024-11-19 14:06:38,459 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 372 transitions, 4243 flow [2024-11-19 14:06:38,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 10.787234042553191) internal successors, (507), 47 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:38,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:38,460 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:38,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 14:06:38,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 14:06:38,661 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:38,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:38,661 INFO L85 PathProgramCache]: Analyzing trace with hash 194621944, now seen corresponding path program 1 times [2024-11-19 14:06:38,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:38,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503096589] [2024-11-19 14:06:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:38,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:39,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:39,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503096589] [2024-11-19 14:06:39,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503096589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:39,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381039465] [2024-11-19 14:06:39,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:39,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:39,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:39,345 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:39,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 14:06:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:39,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-19 14:06:39,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:39,984 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:39,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:40,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:06:40,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2024-11-19 14:06:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:40,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381039465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:40,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:40,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 47 [2024-11-19 14:06:40,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135365827] [2024-11-19 14:06:40,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:40,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-19 14:06:40,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:40,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-19 14:06:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1967, Unknown=0, NotChecked=0, Total=2256 [2024-11-19 14:06:40,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-11-19 14:06:40,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 372 transitions, 4243 flow. Second operand has 48 states, 48 states have (on average 11.6875) internal successors, (561), 48 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:40,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:40,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-11-19 14:06:40,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:57,580 INFO L124 PetriNetUnfolderBase]: 15225/28066 cut-off events. [2024-11-19 14:06:57,581 INFO L125 PetriNetUnfolderBase]: For 547251/549183 co-relation queries the response was YES. [2024-11-19 14:06:57,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159876 conditions, 28066 events. 15225/28066 cut-off events. For 547251/549183 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 235949 event pairs, 480 based on Foata normal form. 2224/30182 useless extension candidates. Maximal degree in co-relation 152540. Up to 4721 conditions per place. [2024-11-19 14:06:57,921 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 1290 selfloop transitions, 1984 changer transitions 120/3407 dead transitions. [2024-11-19 14:06:57,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 3407 transitions, 46006 flow [2024-11-19 14:06:57,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2024-11-19 14:06:57,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2024-11-19 14:06:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 3668 transitions. [2024-11-19 14:06:57,928 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34267563527653216 [2024-11-19 14:06:57,928 INFO L175 Difference]: Start difference. First operand has 233 places, 372 transitions, 4243 flow. Second operand 223 states and 3668 transitions. [2024-11-19 14:06:57,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 3407 transitions, 46006 flow [2024-11-19 14:06:59,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 3407 transitions, 40491 flow, removed 2269 selfloop flow, removed 21 redundant places. [2024-11-19 14:06:59,061 INFO L231 Difference]: Finished difference. Result has 553 places, 2289 transitions, 33815 flow [2024-11-19 14:06:59,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3390, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=223, PETRI_FLOW=33815, PETRI_PLACES=553, PETRI_TRANSITIONS=2289} [2024-11-19 14:06:59,062 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 507 predicate places. [2024-11-19 14:06:59,062 INFO L471 AbstractCegarLoop]: Abstraction has has 553 places, 2289 transitions, 33815 flow [2024-11-19 14:06:59,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 11.6875) internal successors, (561), 48 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:59,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:59,063 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:59,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:59,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:59,263 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:06:59,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:59,264 INFO L85 PathProgramCache]: Analyzing trace with hash 608495796, now seen corresponding path program 1 times [2024-11-19 14:06:59,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:59,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293303242] [2024-11-19 14:06:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:59,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:06:59,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:59,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293303242] [2024-11-19 14:06:59,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293303242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:59,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:59,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:06:59,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838912202] [2024-11-19 14:06:59,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:59,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:59,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:59,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:59,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:59,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 14:06:59,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 2289 transitions, 33815 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:59,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:59,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 14:06:59,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:11,817 INFO L124 PetriNetUnfolderBase]: 12426/23366 cut-off events. [2024-11-19 14:07:11,817 INFO L125 PetriNetUnfolderBase]: For 1744872/1747900 co-relation queries the response was YES. [2024-11-19 14:07:12,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186577 conditions, 23366 events. 12426/23366 cut-off events. For 1744872/1747900 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 188039 event pairs, 842 based on Foata normal form. 1613/24863 useless extension candidates. Maximal degree in co-relation 185908. Up to 10329 conditions per place. [2024-11-19 14:07:12,342 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 1918 selfloop transitions, 4 changer transitions 14/1993 dead transitions. [2024-11-19 14:07:12,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 1993 transitions, 34126 flow [2024-11-19 14:07:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-19 14:07:12,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-11-19 14:07:12,343 INFO L175 Difference]: Start difference. First operand has 553 places, 2289 transitions, 33815 flow. Second operand 4 states and 98 transitions. [2024-11-19 14:07:12,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 1993 transitions, 34126 flow [2024-11-19 14:07:19,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 1993 transitions, 28122 flow, removed 2935 selfloop flow, removed 47 redundant places. [2024-11-19 14:07:19,686 INFO L231 Difference]: Finished difference. Result has 459 places, 1627 transitions, 19743 flow [2024-11-19 14:07:19,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=19621, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=19743, PETRI_PLACES=459, PETRI_TRANSITIONS=1627} [2024-11-19 14:07:19,688 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 413 predicate places. [2024-11-19 14:07:19,688 INFO L471 AbstractCegarLoop]: Abstraction has has 459 places, 1627 transitions, 19743 flow [2024-11-19 14:07:19,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:19,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:19,689 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:19,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 14:07:19,689 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:07:19,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:19,689 INFO L85 PathProgramCache]: Analyzing trace with hash 294081302, now seen corresponding path program 2 times [2024-11-19 14:07:19,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:19,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548114568] [2024-11-19 14:07:19,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:07:19,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:19,712 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:07:19,713 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:20,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:20,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:20,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548114568] [2024-11-19 14:07:20,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548114568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:20,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575531299] [2024-11-19 14:07:20,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:07:20,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:20,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:20,035 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:20,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 14:07:20,111 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:07:20,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:20,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 14:07:20,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:20,432 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:20,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:20,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:07:20,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2024-11-19 14:07:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:07:20,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575531299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:20,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:20,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 34 [2024-11-19 14:07:20,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866497358] [2024-11-19 14:07:20,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:20,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-19 14:07:20,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:20,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-19 14:07:20,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2024-11-19 14:07:20,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-11-19 14:07:20,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 1627 transitions, 19743 flow. Second operand has 35 states, 35 states have (on average 12.257142857142858) internal successors, (429), 35 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:20,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:20,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-11-19 14:07:20,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand