./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.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 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:43:07,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:43:07,405 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:43:07,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:43:07,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:43:07,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:43:07,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:43:07,441 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:43:07,441 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:43:07,442 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:43:07,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:43:07,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:43:07,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:43:07,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:43:07,444 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:43:07,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:43:07,446 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:43:07,446 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:43:07,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:43:07,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:43:07,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:43:07,451 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:43:07,451 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:43:07,451 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:43:07,452 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:43:07,452 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:43:07,452 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:43:07,452 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:43:07,452 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:43:07,453 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:43:07,453 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:43:07,453 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:43:07,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:43:07,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:43:07,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:43:07,454 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:43:07,454 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:43:07,454 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:43:07,454 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:43:07,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:43:07,455 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:43:07,455 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:43:07,456 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:43:07,456 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:43:07,456 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 [2024-10-24 23:43:07,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:43:07,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:43:07,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:43:07,684 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:43:07,685 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:43:07,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2024-10-24 23:43:08,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:43:09,167 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:43:09,168 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2024-10-24 23:43:09,178 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2856b5fb8/eb54c9c5f46a4312865a3e8fa9ac9cf7/FLAG2d5ec654f [2024-10-24 23:43:09,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2856b5fb8/eb54c9c5f46a4312865a3e8fa9ac9cf7 [2024-10-24 23:43:09,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:43:09,569 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:43:09,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:43:09,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:43:09,576 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:43:09,576 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:43:09" (1/1) ... [2024-10-24 23:43:09,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a21888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09, skipping insertion in model container [2024-10-24 23:43:09,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:43:09" (1/1) ... [2024-10-24 23:43:09,598 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:43:09,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:43:09,754 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:43:09,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:43:09,799 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:43:09,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09 WrapperNode [2024-10-24 23:43:09,800 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:43:09,801 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:43:09,801 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:43:09,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:43:09,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09" (1/1) ... [2024-10-24 23:43:09,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09" (1/1) ... [2024-10-24 23:43:09,835 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 12, calls inlined = 14, statements flattened = 199 [2024-10-24 23:43:09,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:43:09,836 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:43:09,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:43:09,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:43:09,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09" (1/1) ... [2024-10-24 23:43:09,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09" (1/1) ... [2024-10-24 23:43:09,848 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09" (1/1) ... [2024-10-24 23:43:09,869 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-24 23:43:09,869 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09" (1/1) ... [2024-10-24 23:43:09,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09" (1/1) ... [2024-10-24 23:43:09,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09" (1/1) ... [2024-10-24 23:43:09,880 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09" (1/1) ... [2024-10-24 23:43:09,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09" (1/1) ... [2024-10-24 23:43:09,882 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09" (1/1) ... [2024-10-24 23:43:09,884 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:43:09,885 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:43:09,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:43:09,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:43:09,886 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09" (1/1) ... [2024-10-24 23:43:09,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:43:09,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:09,920 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) [2024-10-24 23:43:09,924 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 [2024-10-24 23:43:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:43:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:43:09,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:43:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:43:09,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:43:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:43:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:43:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:43:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:43:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:43:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:43:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:43:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:43:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:43:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:43:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:43:09,996 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:43:10,152 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:43:10,154 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:43:10,418 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:43:10,419 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:43:10,641 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:43:10,641 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-24 23:43:10,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:43:10 BoogieIcfgContainer [2024-10-24 23:43:10,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:43:10,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:43:10,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:43:10,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:43:10,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:43:09" (1/3) ... [2024-10-24 23:43:10,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1967da21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:43:10, skipping insertion in model container [2024-10-24 23:43:10,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:09" (2/3) ... [2024-10-24 23:43:10,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1967da21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:43:10, skipping insertion in model container [2024-10-24 23:43:10,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:43:10" (3/3) ... [2024-10-24 23:43:10,649 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2024-10-24 23:43:10,662 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:43:10,662 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-24 23:43:10,662 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:43:10,699 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 23:43:10,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 100 flow [2024-10-24 23:43:10,750 INFO L124 PetriNetUnfolderBase]: 5/41 cut-off events. [2024-10-24 23:43:10,753 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 23:43:10,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 5/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 104 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2024-10-24 23:43:10,757 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 43 transitions, 100 flow [2024-10-24 23:43:10,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 39 transitions, 87 flow [2024-10-24 23:43:10,770 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:43:10,776 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;@b8f327f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:43:10,777 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-24 23:43:10,780 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:43:10,780 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:43:10,780 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:43:10,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:10,781 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:43:10,781 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-24 23:43:10,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:10,785 INFO L85 PathProgramCache]: Analyzing trace with hash 598072, now seen corresponding path program 1 times [2024-10-24 23:43:10,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:10,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390548127] [2024-10-24 23:43:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:10,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:11,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:11,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390548127] [2024-10-24 23:43:11,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390548127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:11,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:11,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:43:11,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218171142] [2024-10-24 23:43:11,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:11,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:43:11,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:11,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:43:11,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:43:11,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-10-24 23:43:11,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:11,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:11,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-10-24 23:43:11,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:11,328 INFO L124 PetriNetUnfolderBase]: 238/425 cut-off events. [2024-10-24 23:43:11,328 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-24 23:43:11,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 425 events. 238/425 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 1833 event pairs, 142 based on Foata normal form. 2/292 useless extension candidates. Maximal degree in co-relation 751. Up to 368 conditions per place. [2024-10-24 23:43:11,338 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 29 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-10-24 23:43:11,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 167 flow [2024-10-24 23:43:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:43:11,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:43:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-10-24 23:43:11,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-10-24 23:43:11,368 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 87 flow. Second operand 4 states and 78 transitions. [2024-10-24 23:43:11,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 167 flow [2024-10-24 23:43:11,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:43:11,376 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 138 flow [2024-10-24 23:43:11,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2024-10-24 23:43:11,383 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-10-24 23:43:11,384 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 138 flow [2024-10-24 23:43:11,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:11,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:11,386 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 23:43:11,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:43:11,386 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-24 23:43:11,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:11,391 INFO L85 PathProgramCache]: Analyzing trace with hash 637876464, now seen corresponding path program 1 times [2024-10-24 23:43:11,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:11,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131236992] [2024-10-24 23:43:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:11,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:11,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:11,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131236992] [2024-10-24 23:43:11,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131236992] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:11,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021000860] [2024-10-24 23:43:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:11,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:11,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:11,625 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) [2024-10-24 23:43:11,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:43:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:11,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:43:11,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:11,746 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:43:11,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021000860] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:11,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:43:11,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:43:11,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627258256] [2024-10-24 23:43:11,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:11,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:43:11,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:11,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:43:11,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:43:11,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-10-24 23:43:11,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:11,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:11,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-10-24 23:43:11,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:11,900 INFO L124 PetriNetUnfolderBase]: 238/423 cut-off events. [2024-10-24 23:43:11,900 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-24 23:43:11,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 423 events. 238/423 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 1827 event pairs, 142 based on Foata normal form. 2/293 useless extension candidates. Maximal degree in co-relation 791. Up to 358 conditions per place. [2024-10-24 23:43:11,904 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 22 selfloop transitions, 12 changer transitions 0/41 dead transitions. [2024-10-24 23:43:11,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 198 flow [2024-10-24 23:43:11,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:43:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:43:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-10-24 23:43:11,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3488372093023256 [2024-10-24 23:43:11,907 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 138 flow. Second operand 6 states and 90 transitions. [2024-10-24 23:43:11,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 198 flow [2024-10-24 23:43:11,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:43:11,908 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 154 flow [2024-10-24 23:43:11,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=154, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2024-10-24 23:43:11,909 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-10-24 23:43:11,910 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 154 flow [2024-10-24 23:43:11,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:11,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:11,910 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:43:11,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:43:12,110 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 [2024-10-24 23:43:12,112 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-24 23:43:12,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:12,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1700665509, now seen corresponding path program 1 times [2024-10-24 23:43:12,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:12,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547771011] [2024-10-24 23:43:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:12,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:12,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:12,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:12,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547771011] [2024-10-24 23:43:12,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547771011] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:12,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343554565] [2024-10-24 23:43:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:12,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:12,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:12,182 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) [2024-10-24 23:43:12,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:43:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:12,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:43:12,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:12,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:12,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343554565] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:12,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:12,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-24 23:43:12,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265990486] [2024-10-24 23:43:12,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:12,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:43:12,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:12,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:43:12,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:43:12,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-10-24 23:43:12,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 154 flow. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:12,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:12,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-10-24 23:43:12,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:12,467 INFO L124 PetriNetUnfolderBase]: 244/447 cut-off events. [2024-10-24 23:43:12,468 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-10-24 23:43:12,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 447 events. 244/447 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2016 event pairs, 142 based on Foata normal form. 6/320 useless extension candidates. Maximal degree in co-relation 793. Up to 369 conditions per place. [2024-10-24 23:43:12,470 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 27 selfloop transitions, 25 changer transitions 0/59 dead transitions. [2024-10-24 23:43:12,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 372 flow [2024-10-24 23:43:12,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:43:12,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:43:12,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-10-24 23:43:12,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34418604651162793 [2024-10-24 23:43:12,472 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 154 flow. Second operand 10 states and 148 transitions. [2024-10-24 23:43:12,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 372 flow [2024-10-24 23:43:12,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 314 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-24 23:43:12,496 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 294 flow [2024-10-24 23:43:12,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=294, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2024-10-24 23:43:12,497 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-10-24 23:43:12,497 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 294 flow [2024-10-24 23:43:12,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:12,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:12,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:12,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:43:12,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-24 23:43:12,699 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-24 23:43:12,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash -483914454, now seen corresponding path program 1 times [2024-10-24 23:43:12,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:12,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287741256] [2024-10-24 23:43:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:12,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:12,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:12,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287741256] [2024-10-24 23:43:12,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287741256] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:12,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:12,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:43:12,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710831203] [2024-10-24 23:43:12,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:12,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:43:12,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:12,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:43:12,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:43:12,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-10-24 23:43:12,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:12,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:12,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-10-24 23:43:12,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:12,910 INFO L124 PetriNetUnfolderBase]: 302/581 cut-off events. [2024-10-24 23:43:12,911 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-10-24 23:43:12,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 581 events. 302/581 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2835 event pairs, 185 based on Foata normal form. 12/427 useless extension candidates. Maximal degree in co-relation 1156. Up to 384 conditions per place. [2024-10-24 23:43:12,915 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 72 selfloop transitions, 3 changer transitions 3/87 dead transitions. [2024-10-24 23:43:12,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 583 flow [2024-10-24 23:43:12,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:43:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:43:12,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-10-24 23:43:12,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5872093023255814 [2024-10-24 23:43:12,917 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 294 flow. Second operand 4 states and 101 transitions. [2024-10-24 23:43:12,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 583 flow [2024-10-24 23:43:12,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 549 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-24 23:43:12,921 INFO L231 Difference]: Finished difference. Result has 54 places, 59 transitions, 285 flow [2024-10-24 23:43:12,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=54, PETRI_TRANSITIONS=59} [2024-10-24 23:43:12,921 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-10-24 23:43:12,922 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 285 flow [2024-10-24 23:43:12,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:12,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:12,922 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:12,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:43:12,922 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-24 23:43:12,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:12,923 INFO L85 PathProgramCache]: Analyzing trace with hash -483914420, now seen corresponding path program 1 times [2024-10-24 23:43:12,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:12,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024951979] [2024-10-24 23:43:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:12,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:12,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:12,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024951979] [2024-10-24 23:43:12,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024951979] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:12,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:12,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:43:12,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827067890] [2024-10-24 23:43:12,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:12,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:43:12,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:12,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:43:12,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:43:12,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-10-24 23:43:12,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:12,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:12,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-10-24 23:43:12,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:13,098 INFO L124 PetriNetUnfolderBase]: 476/852 cut-off events. [2024-10-24 23:43:13,099 INFO L125 PetriNetUnfolderBase]: For 134/154 co-relation queries the response was YES. [2024-10-24 23:43:13,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1988 conditions, 852 events. 476/852 cut-off events. For 134/154 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4426 event pairs, 145 based on Foata normal form. 0/607 useless extension candidates. Maximal degree in co-relation 1894. Up to 402 conditions per place. [2024-10-24 23:43:13,104 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 64 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-10-24 23:43:13,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 464 flow [2024-10-24 23:43:13,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:43:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:43:13,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-10-24 23:43:13,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-10-24 23:43:13,106 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 285 flow. Second operand 3 states and 83 transitions. [2024-10-24 23:43:13,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 464 flow [2024-10-24 23:43:13,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 460 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 23:43:13,109 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 303 flow [2024-10-24 23:43:13,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2024-10-24 23:43:13,110 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-10-24 23:43:13,110 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 303 flow [2024-10-24 23:43:13,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:13,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:13,111 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:13,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:43:13,111 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-24 23:43:13,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:13,112 INFO L85 PathProgramCache]: Analyzing trace with hash -483914421, now seen corresponding path program 1 times [2024-10-24 23:43:13,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:13,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066651636] [2024-10-24 23:43:13,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:13,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:13,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:13,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066651636] [2024-10-24 23:43:13,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066651636] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:13,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:13,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:43:13,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307432797] [2024-10-24 23:43:13,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:13,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:43:13,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:13,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:43:13,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:43:13,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-10-24 23:43:13,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:13,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:13,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-10-24 23:43:13,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:13,331 INFO L124 PetriNetUnfolderBase]: 431/819 cut-off events. [2024-10-24 23:43:13,332 INFO L125 PetriNetUnfolderBase]: For 186/208 co-relation queries the response was YES. [2024-10-24 23:43:13,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 819 events. 431/819 cut-off events. For 186/208 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4442 event pairs, 285 based on Foata normal form. 36/652 useless extension candidates. Maximal degree in co-relation 1858. Up to 720 conditions per place. [2024-10-24 23:43:13,338 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 49 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-10-24 23:43:13,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 393 flow [2024-10-24 23:43:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:43:13,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:43:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-10-24 23:43:13,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5038759689922481 [2024-10-24 23:43:13,340 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 303 flow. Second operand 3 states and 65 transitions. [2024-10-24 23:43:13,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 393 flow [2024-10-24 23:43:13,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 381 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:43:13,343 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 283 flow [2024-10-24 23:43:13,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=55, PETRI_TRANSITIONS=59} [2024-10-24 23:43:13,345 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-10-24 23:43:13,345 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 283 flow [2024-10-24 23:43:13,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:13,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:13,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:13,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:43:13,347 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-24 23:43:13,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:13,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1224124274, now seen corresponding path program 1 times [2024-10-24 23:43:13,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:13,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705301771] [2024-10-24 23:43:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:13,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:13,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:13,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705301771] [2024-10-24 23:43:13,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705301771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:13,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812275257] [2024-10-24 23:43:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:13,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:13,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:13,489 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) [2024-10-24 23:43:13,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:43:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:13,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:43:13,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:13,564 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:43:13,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812275257] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:13,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:43:13,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2024-10-24 23:43:13,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256114287] [2024-10-24 23:43:13,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:13,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:43:13,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:13,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:43:13,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:43:13,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-10-24 23:43:13,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:13,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:13,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-10-24 23:43:13,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:13,641 INFO L124 PetriNetUnfolderBase]: 429/817 cut-off events. [2024-10-24 23:43:13,641 INFO L125 PetriNetUnfolderBase]: For 134/156 co-relation queries the response was YES. [2024-10-24 23:43:13,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 817 events. 429/817 cut-off events. For 134/156 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4367 event pairs, 285 based on Foata normal form. 2/616 useless extension candidates. Maximal degree in co-relation 1908. Up to 712 conditions per place. [2024-10-24 23:43:13,645 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 43 selfloop transitions, 6 changer transitions 0/58 dead transitions. [2024-10-24 23:43:13,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 377 flow [2024-10-24 23:43:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:43:13,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:43:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-10-24 23:43:13,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5193798449612403 [2024-10-24 23:43:13,646 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 283 flow. Second operand 3 states and 67 transitions. [2024-10-24 23:43:13,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 377 flow [2024-10-24 23:43:13,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:43:13,648 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 290 flow [2024-10-24 23:43:13,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2024-10-24 23:43:13,648 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-10-24 23:43:13,649 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 290 flow [2024-10-24 23:43:13,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:13,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:13,649 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:13,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:43:13,853 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 [2024-10-24 23:43:13,853 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-24 23:43:13,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:13,854 INFO L85 PathProgramCache]: Analyzing trace with hash 85303529, now seen corresponding path program 1 times [2024-10-24 23:43:13,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:13,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626672129] [2024-10-24 23:43:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:13,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:13,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:13,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626672129] [2024-10-24 23:43:13,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626672129] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:13,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332673460] [2024-10-24 23:43:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:13,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:13,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:13,982 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) [2024-10-24 23:43:13,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:43:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:14,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:43:14,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:43:14,062 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:43:14,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332673460] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:14,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:43:14,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-24 23:43:14,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581294582] [2024-10-24 23:43:14,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:14,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:43:14,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:14,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:43:14,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:43:14,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-10-24 23:43:14,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 290 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) [2024-10-24 23:43:14,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:14,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-10-24 23:43:14,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:14,117 INFO L124 PetriNetUnfolderBase]: 317/645 cut-off events. [2024-10-24 23:43:14,117 INFO L125 PetriNetUnfolderBase]: For 134/144 co-relation queries the response was YES. [2024-10-24 23:43:14,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 645 events. 317/645 cut-off events. For 134/144 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3272 event pairs, 216 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 1472. Up to 554 conditions per place. [2024-10-24 23:43:14,120 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 45 selfloop transitions, 1 changer transitions 1/56 dead transitions. [2024-10-24 23:43:14,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 376 flow [2024-10-24 23:43:14,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:43:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:43:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-10-24 23:43:14,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2024-10-24 23:43:14,120 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 290 flow. Second operand 3 states and 64 transitions. [2024-10-24 23:43:14,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 376 flow [2024-10-24 23:43:14,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:43:14,122 INFO L231 Difference]: Finished difference. Result has 55 places, 55 transitions, 275 flow [2024-10-24 23:43:14,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2024-10-24 23:43:14,123 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-10-24 23:43:14,123 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 275 flow [2024-10-24 23:43:14,123 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) [2024-10-24 23:43:14,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:14,123 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:14,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 23:43:14,324 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 [2024-10-24 23:43:14,324 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-24 23:43:14,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:14,325 INFO L85 PathProgramCache]: Analyzing trace with hash -61526606, now seen corresponding path program 1 times [2024-10-24 23:43:14,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:14,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948451375] [2024-10-24 23:43:14,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:14,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:14,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:14,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948451375] [2024-10-24 23:43:14,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948451375] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:14,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969919696] [2024-10-24 23:43:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:14,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:14,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:14,371 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) [2024-10-24 23:43:14,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:43:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:14,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 23:43:14,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:14,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:14,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969919696] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:14,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:14,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 7, 7] total 14 [2024-10-24 23:43:14,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375858827] [2024-10-24 23:43:14,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:14,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 23:43:14,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:14,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 23:43:14,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-10-24 23:43:14,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-10-24 23:43:14,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 275 flow. Second operand has 15 states, 15 states have (on average 11.2) internal successors, (168), 15 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:14,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:14,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-10-24 23:43:14,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:14,943 INFO L124 PetriNetUnfolderBase]: 598/1106 cut-off events. [2024-10-24 23:43:14,943 INFO L125 PetriNetUnfolderBase]: For 191/207 co-relation queries the response was YES. [2024-10-24 23:43:14,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2566 conditions, 1106 events. 598/1106 cut-off events. For 191/207 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5848 event pairs, 140 based on Foata normal form. 0/924 useless extension candidates. Maximal degree in co-relation 2549. Up to 242 conditions per place. [2024-10-24 23:43:14,946 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 42 selfloop transitions, 28 changer transitions 42/119 dead transitions. [2024-10-24 23:43:14,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 119 transitions, 666 flow [2024-10-24 23:43:14,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 23:43:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 23:43:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 222 transitions. [2024-10-24 23:43:14,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3687707641196013 [2024-10-24 23:43:14,948 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 275 flow. Second operand 14 states and 222 transitions. [2024-10-24 23:43:14,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 119 transitions, 666 flow [2024-10-24 23:43:14,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 119 transitions, 665 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:43:14,950 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 337 flow [2024-10-24 23:43:14,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=337, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2024-10-24 23:43:14,952 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-10-24 23:43:14,952 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 337 flow [2024-10-24 23:43:14,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.2) internal successors, (168), 15 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:14,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:14,952 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-24 23:43:14,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 23:43:15,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:15,156 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-24 23:43:15,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:15,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1000513299, now seen corresponding path program 2 times [2024-10-24 23:43:15,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:15,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327027312] [2024-10-24 23:43:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:15,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:15,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:15,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327027312] [2024-10-24 23:43:15,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327027312] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:15,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662993012] [2024-10-24 23:43:15,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:43:15,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:15,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:15,258 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) [2024-10-24 23:43:15,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:43:15,305 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:43:15,305 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:43:15,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:43:15,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:43:15,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:43:15,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662993012] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:15,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:15,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-24 23:43:15,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855292397] [2024-10-24 23:43:15,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:15,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 23:43:15,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:15,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 23:43:15,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:43:15,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-10-24 23:43:15,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 337 flow. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:15,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:15,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-10-24 23:43:15,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:15,602 INFO L124 PetriNetUnfolderBase]: 398/788 cut-off events. [2024-10-24 23:43:15,603 INFO L125 PetriNetUnfolderBase]: For 389/398 co-relation queries the response was YES. [2024-10-24 23:43:15,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 788 events. 398/788 cut-off events. For 389/398 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3918 event pairs, 274 based on Foata normal form. 4/698 useless extension candidates. Maximal degree in co-relation 1997. Up to 653 conditions per place. [2024-10-24 23:43:15,605 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 21 selfloop transitions, 32 changer transitions 0/60 dead transitions. [2024-10-24 23:43:15,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 60 transitions, 482 flow [2024-10-24 23:43:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:43:15,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:43:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 270 transitions. [2024-10-24 23:43:15,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2616279069767442 [2024-10-24 23:43:15,607 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 337 flow. Second operand 24 states and 270 transitions. [2024-10-24 23:43:15,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 60 transitions, 482 flow [2024-10-24 23:43:15,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 60 transitions, 468 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-24 23:43:15,609 INFO L231 Difference]: Finished difference. Result has 84 places, 60 transitions, 439 flow [2024-10-24 23:43:15,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=439, PETRI_PLACES=84, PETRI_TRANSITIONS=60} [2024-10-24 23:43:15,610 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-10-24 23:43:15,610 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 60 transitions, 439 flow [2024-10-24 23:43:15,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:15,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:15,610 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-24 23:43:15,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 23:43:15,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:15,811 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-24 23:43:15,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:15,811 INFO L85 PathProgramCache]: Analyzing trace with hash 163657515, now seen corresponding path program 1 times [2024-10-24 23:43:15,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:15,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992704882] [2024-10-24 23:43:15,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:15,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:15,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:15,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992704882] [2024-10-24 23:43:15,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992704882] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:15,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779116740] [2024-10-24 23:43:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:15,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:15,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:15,949 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) [2024-10-24 23:43:15,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:43:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:16,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:43:16,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:16,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:16,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779116740] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:16,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:16,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-24 23:43:16,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361436483] [2024-10-24 23:43:16,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:16,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 23:43:16,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:16,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 23:43:16,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-24 23:43:16,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-10-24 23:43:16,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 60 transitions, 439 flow. Second operand has 28 states, 28 states have (on average 10.071428571428571) internal successors, (282), 28 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:16,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:16,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-10-24 23:43:16,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:16,550 INFO L124 PetriNetUnfolderBase]: 419/876 cut-off events. [2024-10-24 23:43:16,550 INFO L125 PetriNetUnfolderBase]: For 892/901 co-relation queries the response was YES. [2024-10-24 23:43:16,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2395 conditions, 876 events. 419/876 cut-off events. For 892/901 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4359 event pairs, 274 based on Foata normal form. 14/793 useless extension candidates. Maximal degree in co-relation 2374. Up to 670 conditions per place. [2024-10-24 23:43:16,554 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 24 selfloop transitions, 71 changer transitions 0/102 dead transitions. [2024-10-24 23:43:16,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 102 transitions, 1049 flow [2024-10-24 23:43:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 23:43:16,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 23:43:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 334 transitions. [2024-10-24 23:43:16,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29874776386404295 [2024-10-24 23:43:16,555 INFO L175 Difference]: Start difference. First operand has 84 places, 60 transitions, 439 flow. Second operand 26 states and 334 transitions. [2024-10-24 23:43:16,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 102 transitions, 1049 flow [2024-10-24 23:43:16,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 873 flow, removed 31 selfloop flow, removed 14 redundant places. [2024-10-24 23:43:16,559 INFO L231 Difference]: Finished difference. Result has 102 places, 102 transitions, 877 flow [2024-10-24 23:43:16,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=877, PETRI_PLACES=102, PETRI_TRANSITIONS=102} [2024-10-24 23:43:16,560 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 61 predicate places. [2024-10-24 23:43:16,560 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 102 transitions, 877 flow [2024-10-24 23:43:16,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.071428571428571) internal successors, (282), 28 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:16,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:16,561 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:16,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 23:43:16,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:16,762 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-24 23:43:16,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:16,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1547408588, now seen corresponding path program 2 times [2024-10-24 23:43:16,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:16,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129512839] [2024-10-24 23:43:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:16,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:43:16,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:16,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129512839] [2024-10-24 23:43:16,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129512839] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:16,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60670165] [2024-10-24 23:43:16,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:43:16,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:16,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:16,833 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) [2024-10-24 23:43:16,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:43:16,889 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:43:16,889 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:43:16,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:43:16,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 23:43:16,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 23:43:16,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60670165] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:16,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:16,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2024-10-24 23:43:16,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096494092] [2024-10-24 23:43:16,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:16,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 23:43:16,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:16,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 23:43:16,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:43:16,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-10-24 23:43:16,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 102 transitions, 877 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:16,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:16,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-10-24 23:43:16,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:17,147 INFO L124 PetriNetUnfolderBase]: 533/1020 cut-off events. [2024-10-24 23:43:17,147 INFO L125 PetriNetUnfolderBase]: For 845/853 co-relation queries the response was YES. [2024-10-24 23:43:17,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2819 conditions, 1020 events. 533/1020 cut-off events. For 845/853 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4998 event pairs, 88 based on Foata normal form. 0/932 useless extension candidates. Maximal degree in co-relation 2793. Up to 320 conditions per place. [2024-10-24 23:43:17,150 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 65 selfloop transitions, 1 changer transitions 73/142 dead transitions. [2024-10-24 23:43:17,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 142 transitions, 1247 flow [2024-10-24 23:43:17,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:43:17,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 23:43:17,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-10-24 23:43:17,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.521594684385382 [2024-10-24 23:43:17,152 INFO L175 Difference]: Start difference. First operand has 102 places, 102 transitions, 877 flow. Second operand 7 states and 157 transitions. [2024-10-24 23:43:17,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 142 transitions, 1247 flow [2024-10-24 23:43:17,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 142 transitions, 1064 flow, removed 54 selfloop flow, removed 12 redundant places. [2024-10-24 23:43:17,161 INFO L231 Difference]: Finished difference. Result has 95 places, 69 transitions, 573 flow [2024-10-24 23:43:17,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=573, PETRI_PLACES=95, PETRI_TRANSITIONS=69} [2024-10-24 23:43:17,162 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 54 predicate places. [2024-10-24 23:43:17,162 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 69 transitions, 573 flow [2024-10-24 23:43:17,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:17,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:17,165 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2024-10-24 23:43:17,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 23:43:17,365 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,SelfDestructingSolverStorable11 [2024-10-24 23:43:17,366 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-24 23:43:17,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:17,367 INFO L85 PathProgramCache]: Analyzing trace with hash 827250642, now seen corresponding path program 2 times [2024-10-24 23:43:17,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:17,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962437847] [2024-10-24 23:43:17,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:17,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:17,772 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:17,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:17,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962437847] [2024-10-24 23:43:17,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962437847] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:17,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198379528] [2024-10-24 23:43:17,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:43:17,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:17,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:17,774 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) [2024-10-24 23:43:17,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:43:17,856 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:43:17,856 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:43:17,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:43:17,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-24 23:43:17,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-24 23:43:18,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198379528] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:18,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:18,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2024-10-24 23:43:18,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159410145] [2024-10-24 23:43:18,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:18,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-24 23:43:18,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:18,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-24 23:43:18,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-10-24 23:43:18,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-10-24 23:43:18,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 69 transitions, 573 flow. Second operand has 31 states, 31 states have (on average 10.096774193548388) internal successors, (313), 31 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:18,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:18,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-10-24 23:43:18,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:18,630 INFO L124 PetriNetUnfolderBase]: 15/141 cut-off events. [2024-10-24 23:43:18,630 INFO L125 PetriNetUnfolderBase]: For 617/617 co-relation queries the response was YES. [2024-10-24 23:43:18,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 141 events. 15/141 cut-off events. For 617/617 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 250 event pairs, 0 based on Foata normal form. 4/142 useless extension candidates. Maximal degree in co-relation 550. Up to 42 conditions per place. [2024-10-24 23:43:18,631 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2024-10-24 23:43:18,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 73 transitions, 733 flow [2024-10-24 23:43:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-24 23:43:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-24 23:43:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 343 transitions. [2024-10-24 23:43:18,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26589147286821707 [2024-10-24 23:43:18,632 INFO L175 Difference]: Start difference. First operand has 95 places, 69 transitions, 573 flow. Second operand 30 states and 343 transitions. [2024-10-24 23:43:18,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 73 transitions, 733 flow [2024-10-24 23:43:18,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 73 transitions, 676 flow, removed 4 selfloop flow, removed 15 redundant places. [2024-10-24 23:43:18,635 INFO L231 Difference]: Finished difference. Result has 81 places, 0 transitions, 0 flow [2024-10-24 23:43:18,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=0, PETRI_PLACES=81, PETRI_TRANSITIONS=0} [2024-10-24 23:43:18,635 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 40 predicate places. [2024-10-24 23:43:18,636 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 0 transitions, 0 flow [2024-10-24 23:43:18,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.096774193548388) internal successors, (313), 31 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:18,638 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2024-10-24 23:43:18,638 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2024-10-24 23:43:18,638 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-10-24 23:43:18,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-10-24 23:43:18,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 23:43:18,843 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,SelfDestructingSolverStorable12 [2024-10-24 23:43:18,844 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:18,848 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 23:43:18,848 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 23:43:18,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:43:18 BasicIcfg [2024-10-24 23:43:18,851 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 23:43:18,852 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 23:43:18,852 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 23:43:18,852 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 23:43:18,852 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:43:10" (3/4) ... [2024-10-24 23:43:18,853 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 23:43:18,855 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-24 23:43:18,855 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-24 23:43:18,859 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 137 nodes and edges [2024-10-24 23:43:18,859 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2024-10-24 23:43:18,859 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-24 23:43:18,860 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-24 23:43:18,926 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 23:43:18,926 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 23:43:18,926 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 23:43:18,927 INFO L158 Benchmark]: Toolchain (without parser) took 9358.56ms. Allocated memory was 199.2MB in the beginning and 388.0MB in the end (delta: 188.7MB). Free memory was 127.3MB in the beginning and 318.5MB in the end (delta: -191.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:43:18,927 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 199.2MB. Free memory was 155.4MB in the beginning and 155.2MB in the end (delta: 188.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:43:18,927 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.32ms. Allocated memory is still 199.2MB. Free memory was 127.0MB in the beginning and 113.6MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 23:43:18,927 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.20ms. Allocated memory is still 199.2MB. Free memory was 113.6MB in the beginning and 111.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:43:18,927 INFO L158 Benchmark]: Boogie Preprocessor took 48.13ms. Allocated memory is still 199.2MB. Free memory was 111.5MB in the beginning and 108.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:43:18,927 INFO L158 Benchmark]: RCFGBuilder took 756.13ms. Allocated memory is still 199.2MB. Free memory was 108.7MB in the beginning and 111.7MB in the end (delta: -3.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2024-10-24 23:43:18,927 INFO L158 Benchmark]: TraceAbstraction took 8208.98ms. Allocated memory was 199.2MB in the beginning and 388.0MB in the end (delta: 188.7MB). Free memory was 111.7MB in the beginning and 324.8MB in the end (delta: -213.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:43:18,928 INFO L158 Benchmark]: Witness Printer took 74.52ms. Allocated memory is still 388.0MB. Free memory was 324.8MB in the beginning and 318.5MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 23:43:18,929 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 199.2MB. Free memory was 155.4MB in the beginning and 155.2MB in the end (delta: 188.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.32ms. Allocated memory is still 199.2MB. Free memory was 127.0MB in the beginning and 113.6MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.20ms. Allocated memory is still 199.2MB. Free memory was 113.6MB in the beginning and 111.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.13ms. Allocated memory is still 199.2MB. Free memory was 111.5MB in the beginning and 108.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 756.13ms. Allocated memory is still 199.2MB. Free memory was 108.7MB in the beginning and 111.7MB in the end (delta: -3.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8208.98ms. Allocated memory was 199.2MB in the beginning and 388.0MB in the end (delta: 188.7MB). Free memory was 111.7MB in the beginning and 324.8MB in the end (delta: -213.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 74.52ms. Allocated memory is still 388.0MB. Free memory was 324.8MB in the beginning and 318.5MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 61 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.1s, OverallIterations: 13, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 978 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 916 mSDsluCounter, 452 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 434 mSDsCounter, 253 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1749 IncrementalHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 253 mSolverCounterUnsat, 18 mSDtfsCounter, 1749 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 408 GetRequests, 207 SyntacticMatches, 6 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=877occurred in iteration=11, InterpolantAutomatonStates: 137, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 325 NumberOfCodeBlocks, 265 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 415 ConstructedInterpolants, 0 QuantifiedInterpolants, 1343 SizeOfPredicates, 28 NumberOfNonLiveVariables, 1086 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 28 InterpolantComputations, 7 PerfectInterpolantSequences, 502/1000 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 23:43:18,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE