./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:56:24,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:56:24,605 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:56:24,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:56:24,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:56:24,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:56:24,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:56:24,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:56:24,652 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:56:24,653 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:56:24,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:56:24,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:56:24,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:56:24,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:56:24,657 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:56:24,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:56:24,658 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:56:24,658 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:56:24,658 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:56:24,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:56:24,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:56:24,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:56:24,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:56:24,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:56:24,663 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:56:24,663 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:56:24,663 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:56:24,663 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:56:24,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:56:24,664 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:56:24,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:56:24,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:56:24,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:56:24,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:56:24,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:56:24,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:56:24,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:56:24,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:56:24,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:56:24,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:56:24,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:56:24,667 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:56:24,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:56:24,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:56:24,668 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2024-10-11 23:56:24,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:56:24,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:56:24,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:56:24,937 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:56:24,937 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:56:24,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2024-10-11 23:56:26,403 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:56:26,700 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:56:26,700 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2024-10-11 23:56:26,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/208669634/270646528f3649e5a8d524c6d8c63a42/FLAG9acae7e0a [2024-10-11 23:56:26,983 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/208669634/270646528f3649e5a8d524c6d8c63a42 [2024-10-11 23:56:26,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:56:26,986 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:56:26,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:56:26,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:56:26,996 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:56:26,997 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:56:26" (1/1) ... [2024-10-11 23:56:27,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2b1bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:26, skipping insertion in model container [2024-10-11 23:56:27,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:56:26" (1/1) ... [2024-10-11 23:56:27,050 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:56:27,527 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:27,528 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:27,528 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:27,530 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:27,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:56:27,601 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:56:27,637 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:27,638 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:27,638 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:27,638 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:27,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:56:27,710 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:56:27,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:27 WrapperNode [2024-10-11 23:56:27,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:56:27,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:56:27,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:56:27,713 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:56:27,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:27" (1/1) ... [2024-10-11 23:56:27,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:27" (1/1) ... [2024-10-11 23:56:27,775 INFO L138 Inliner]: procedures = 273, calls = 31, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 163 [2024-10-11 23:56:27,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:56:27,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:56:27,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:56:27,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:56:27,787 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:27" (1/1) ... [2024-10-11 23:56:27,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:27" (1/1) ... [2024-10-11 23:56:27,791 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:27" (1/1) ... [2024-10-11 23:56:27,812 INFO L175 MemorySlicer]: Split 18 memory accesses to 1 slices as follows [18]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 12 writes are split as follows [12]. [2024-10-11 23:56:27,813 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:27" (1/1) ... [2024-10-11 23:56:27,813 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:27" (1/1) ... [2024-10-11 23:56:27,822 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:27" (1/1) ... [2024-10-11 23:56:27,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:27" (1/1) ... [2024-10-11 23:56:27,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:27" (1/1) ... [2024-10-11 23:56:27,830 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:27" (1/1) ... [2024-10-11 23:56:27,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:56:27,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:56:27,835 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:56:27,835 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:56:27,836 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:27" (1/1) ... [2024-10-11 23:56:27,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:56:27,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:27,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:56:27,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:56:27,973 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-10-11 23:56:27,974 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-10-11 23:56:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 23:56:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:56:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:56:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:56:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:56:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 23:56:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:56:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 23:56:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:56:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:56:27,977 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:56:28,123 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:56:28,124 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:56:28,457 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:56:28,457 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:56:28,685 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:56:28,686 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 23:56:28,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:56:28 BoogieIcfgContainer [2024-10-11 23:56:28,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:56:28,690 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:56:28,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:56:28,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:56:28,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:56:26" (1/3) ... [2024-10-11 23:56:28,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a9254a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:56:28, skipping insertion in model container [2024-10-11 23:56:28,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:27" (2/3) ... [2024-10-11 23:56:28,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a9254a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:56:28, skipping insertion in model container [2024-10-11 23:56:28,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:56:28" (3/3) ... [2024-10-11 23:56:28,696 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2024-10-11 23:56:28,711 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:56:28,711 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-11 23:56:28,712 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:56:28,770 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:56:28,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 122 flow [2024-10-11 23:56:28,840 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events. [2024-10-11 23:56:28,840 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:56:28,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 6/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 156 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-10-11 23:56:28,844 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 57 transitions, 122 flow [2024-10-11 23:56:28,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 55 transitions, 116 flow [2024-10-11 23:56:28,856 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:56:28,860 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;@44ac5a21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:56:28,861 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-11 23:56:28,864 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:56:28,864 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-10-11 23:56:28,864 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:56:28,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:28,865 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-11 23:56:28,865 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:56:28,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:28,869 INFO L85 PathProgramCache]: Analyzing trace with hash 15425599, now seen corresponding path program 1 times [2024-10-11 23:56:28,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:28,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013093206] [2024-10-11 23:56:28,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:28,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 23:56:29,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064116649] [2024-10-11 23:56:29,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:29,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:29,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:29,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:29,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:56:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:29,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 23:56:29,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:29,152 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:56:29,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:29,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013093206] [2024-10-11 23:56:29,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 23:56:29,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064116649] [2024-10-11 23:56:29,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064116649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:29,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:29,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 23:56:29,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294001823] [2024-10-11 23:56:29,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:29,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:56:29,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:29,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:56:29,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:56:29,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2024-10-11 23:56:29,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:29,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:29,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2024-10-11 23:56:29,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:29,555 INFO L124 PetriNetUnfolderBase]: 303/693 cut-off events. [2024-10-11 23:56:29,555 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 23:56:29,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 693 events. 303/693 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3585 event pairs, 224 based on Foata normal form. 1/585 useless extension candidates. Maximal degree in co-relation 1159. Up to 490 conditions per place. [2024-10-11 23:56:29,565 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 36 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-10-11 23:56:29,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 202 flow [2024-10-11 23:56:29,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:56:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:56:29,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-10-11 23:56:29,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6608187134502924 [2024-10-11 23:56:29,578 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 116 flow. Second operand 3 states and 113 transitions. [2024-10-11 23:56:29,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 202 flow [2024-10-11 23:56:29,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:56:29,583 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 130 flow [2024-10-11 23:56:29,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-10-11 23:56:29,587 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2024-10-11 23:56:29,588 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 130 flow [2024-10-11 23:56:29,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:29,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:29,589 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-11 23:56:29,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 23:56:29,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-11 23:56:29,793 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:56:29,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:29,794 INFO L85 PathProgramCache]: Analyzing trace with hash 15425613, now seen corresponding path program 1 times [2024-10-11 23:56:29,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:29,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303143641] [2024-10-11 23:56:29,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:29,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:29,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:29,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303143641] [2024-10-11 23:56:29,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303143641] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:29,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:29,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:29,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883010153] [2024-10-11 23:56:29,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:29,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:56:29,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:29,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:56:29,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:56:29,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2024-10-11 23:56:29,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:29,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:29,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2024-10-11 23:56:29,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:30,158 INFO L124 PetriNetUnfolderBase]: 303/707 cut-off events. [2024-10-11 23:56:30,159 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 23:56:30,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 707 events. 303/707 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3691 event pairs, 224 based on Foata normal form. 4/602 useless extension candidates. Maximal degree in co-relation 1200. Up to 495 conditions per place. [2024-10-11 23:56:30,167 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 34 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-11 23:56:30,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 206 flow [2024-10-11 23:56:30,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:56:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:56:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-10-11 23:56:30,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6432748538011696 [2024-10-11 23:56:30,169 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 130 flow. Second operand 3 states and 110 transitions. [2024-10-11 23:56:30,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 206 flow [2024-10-11 23:56:30,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:56:30,171 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 144 flow [2024-10-11 23:56:30,171 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-10-11 23:56:30,173 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-10-11 23:56:30,173 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 144 flow [2024-10-11 23:56:30,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:30,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:30,176 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 23:56:30,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:56:30,176 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:56:30,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:30,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1939114209, now seen corresponding path program 1 times [2024-10-11 23:56:30,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:30,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911994722] [2024-10-11 23:56:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:30,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:30,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:30,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:30,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911994722] [2024-10-11 23:56:30,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911994722] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:30,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:30,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:30,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36249744] [2024-10-11 23:56:30,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:30,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:56:30,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:30,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:56:30,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:56:30,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-10-11 23:56:30,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2024-10-11 23:56:30,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:30,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-10-11 23:56:30,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:30,735 INFO L124 PetriNetUnfolderBase]: 303/703 cut-off events. [2024-10-11 23:56:30,735 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-11 23:56:30,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 703 events. 303/703 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3678 event pairs, 224 based on Foata normal form. 4/602 useless extension candidates. Maximal degree in co-relation 1187. Up to 499 conditions per place. [2024-10-11 23:56:30,740 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 35 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-10-11 23:56:30,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 222 flow [2024-10-11 23:56:30,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:56:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:56:30,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-10-11 23:56:30,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-10-11 23:56:30,742 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 144 flow. Second operand 4 states and 127 transitions. [2024-10-11 23:56:30,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 222 flow [2024-10-11 23:56:30,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:56:30,745 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 160 flow [2024-10-11 23:56:30,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-10-11 23:56:30,746 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-10-11 23:56:30,746 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 160 flow [2024-10-11 23:56:30,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2024-10-11 23:56:30,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:30,746 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:30,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:56:30,747 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:56:30,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:30,747 INFO L85 PathProgramCache]: Analyzing trace with hash 841761753, now seen corresponding path program 1 times [2024-10-11 23:56:30,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:30,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054770917] [2024-10-11 23:56:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:30,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:30,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:30,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054770917] [2024-10-11 23:56:30,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054770917] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:30,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359177679] [2024-10-11 23:56:30,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:30,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:30,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:30,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:30,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:56:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:30,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:56:30,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:31,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:31,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:31,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359177679] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:31,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:31,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 23:56:31,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747818738] [2024-10-11 23:56:31,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:31,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:56:31,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:31,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:56:31,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:56:31,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-10-11 23:56:31,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 160 flow. Second operand has 10 states, 10 states have (on average 22.5) internal successors, (225), 10 states have internal predecessors, (225), 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) [2024-10-11 23:56:31,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:31,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-10-11 23:56:31,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:31,577 INFO L124 PetriNetUnfolderBase]: 303/719 cut-off events. [2024-10-11 23:56:31,577 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-11 23:56:31,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1306 conditions, 719 events. 303/719 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3767 event pairs, 224 based on Foata normal form. 6/620 useless extension candidates. Maximal degree in co-relation 1206. Up to 489 conditions per place. [2024-10-11 23:56:31,582 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 38 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2024-10-11 23:56:31,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 66 transitions, 284 flow [2024-10-11 23:56:31,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 23:56:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 23:56:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-10-11 23:56:31,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46393762183235865 [2024-10-11 23:56:31,585 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 160 flow. Second operand 9 states and 238 transitions. [2024-10-11 23:56:31,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 66 transitions, 284 flow [2024-10-11 23:56:31,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:56:31,591 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 210 flow [2024-10-11 23:56:31,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=210, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-10-11 23:56:31,592 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-10-11 23:56:31,592 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 210 flow [2024-10-11 23:56:31,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.5) internal successors, (225), 10 states have internal predecessors, (225), 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) [2024-10-11 23:56:31,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:31,592 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 23:56:31,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 23:56:31,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:31,794 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:56:31,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:31,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1479194989, now seen corresponding path program 1 times [2024-10-11 23:56:31,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:31,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299460218] [2024-10-11 23:56:31,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:31,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:32,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:32,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299460218] [2024-10-11 23:56:32,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299460218] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:32,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972497443] [2024-10-11 23:56:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:32,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:32,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:32,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:32,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 23:56:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:32,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:56:32,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:32,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:32,191 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:56:32,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972497443] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:32,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:56:32,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-11 23:56:32,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812014331] [2024-10-11 23:56:32,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:32,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:56:32,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:32,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:56:32,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:56:32,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-10-11 23:56:32,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-10-11 23:56:32,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:32,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-10-11 23:56:32,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:32,673 INFO L124 PetriNetUnfolderBase]: 303/715 cut-off events. [2024-10-11 23:56:32,674 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-10-11 23:56:32,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 715 events. 303/715 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3755 event pairs, 224 based on Foata normal form. 4/614 useless extension candidates. Maximal degree in co-relation 1223. Up to 487 conditions per place. [2024-10-11 23:56:32,679 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 31 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2024-10-11 23:56:32,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 60 transitions, 274 flow [2024-10-11 23:56:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:56:32,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:56:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-10-11 23:56:32,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-10-11 23:56:32,681 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 210 flow. Second operand 6 states and 169 transitions. [2024-10-11 23:56:32,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 60 transitions, 274 flow [2024-10-11 23:56:32,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 60 transitions, 266 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 23:56:32,685 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 204 flow [2024-10-11 23:56:32,685 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2024-10-11 23:56:32,686 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-10-11 23:56:32,686 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 204 flow [2024-10-11 23:56:32,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-10-11 23:56:32,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:32,687 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1] [2024-10-11 23:56:32,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 23:56:32,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:32,888 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:56:32,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:32,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1648823728, now seen corresponding path program 1 times [2024-10-11 23:56:32,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:32,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735841662] [2024-10-11 23:56:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:32,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 23:56:33,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:33,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735841662] [2024-10-11 23:56:33,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735841662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:33,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:33,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:33,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394511626] [2024-10-11 23:56:33,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:33,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:56:33,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:33,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:56:33,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:56:33,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2024-10-11 23:56:33,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:33,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:33,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2024-10-11 23:56:33,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:33,296 INFO L124 PetriNetUnfolderBase]: 303/713 cut-off events. [2024-10-11 23:56:33,296 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-10-11 23:56:33,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1328 conditions, 713 events. 303/713 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3747 event pairs, 224 based on Foata normal form. 2/610 useless extension candidates. Maximal degree in co-relation 1229. Up to 493 conditions per place. [2024-10-11 23:56:33,302 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 30 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2024-10-11 23:56:33,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 60 transitions, 280 flow [2024-10-11 23:56:33,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:56:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:56:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-10-11 23:56:33,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-10-11 23:56:33,304 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 204 flow. Second operand 4 states and 126 transitions. [2024-10-11 23:56:33,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 60 transitions, 280 flow [2024-10-11 23:56:33,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 60 transitions, 264 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-11 23:56:33,308 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 212 flow [2024-10-11 23:56:33,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-10-11 23:56:33,309 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-10-11 23:56:33,309 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 212 flow [2024-10-11 23:56:33,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:56:33,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:33,309 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1] [2024-10-11 23:56:33,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 23:56:33,310 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:56:33,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:33,311 INFO L85 PathProgramCache]: Analyzing trace with hash -323314599, now seen corresponding path program 2 times [2024-10-11 23:56:33,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:33,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802348055] [2024-10-11 23:56:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:33,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 23:56:33,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:33,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802348055] [2024-10-11 23:56:33,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802348055] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:33,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:33,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:56:33,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135810383] [2024-10-11 23:56:33,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:33,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:56:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:33,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:56:33,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:56:33,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-10-11 23:56:33,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-11 23:56:33,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:33,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-10-11 23:56:33,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:33,769 INFO L124 PetriNetUnfolderBase]: 303/711 cut-off events. [2024-10-11 23:56:33,769 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-10-11 23:56:33,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 711 events. 303/711 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3719 event pairs, 224 based on Foata normal form. 2/610 useless extension candidates. Maximal degree in co-relation 1211. Up to 498 conditions per place. [2024-10-11 23:56:33,774 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 45 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-10-11 23:56:33,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 380 flow [2024-10-11 23:56:33,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:56:33,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:56:33,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-10-11 23:56:33,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-10-11 23:56:33,775 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 212 flow. Second operand 4 states and 130 transitions. [2024-10-11 23:56:33,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 380 flow [2024-10-11 23:56:33,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 356 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-11 23:56:33,779 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 223 flow [2024-10-11 23:56:33,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-10-11 23:56:33,780 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-10-11 23:56:33,780 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 223 flow [2024-10-11 23:56:33,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-11 23:56:33,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:33,780 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2024-10-11 23:56:33,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 23:56:33,781 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:56:33,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:33,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1858180233, now seen corresponding path program 1 times [2024-10-11 23:56:33,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:33,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130171911] [2024-10-11 23:56:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:33,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:56:34,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:34,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130171911] [2024-10-11 23:56:34,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130171911] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:34,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151670088] [2024-10-11 23:56:34,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:34,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:34,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:34,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:34,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 23:56:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:34,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:56:34,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:56:34,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:56:34,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151670088] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:34,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:34,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-11 23:56:34,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864030186] [2024-10-11 23:56:34,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:34,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 23:56:34,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:34,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 23:56:34,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-11 23:56:34,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-10-11 23:56:34,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 223 flow. Second operand has 18 states, 18 states have (on average 22.833333333333332) internal successors, (411), 18 states have internal predecessors, (411), 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) [2024-10-11 23:56:34,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:34,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-10-11 23:56:34,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:35,377 INFO L124 PetriNetUnfolderBase]: 303/759 cut-off events. [2024-10-11 23:56:35,377 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2024-10-11 23:56:35,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 759 events. 303/759 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3778 event pairs, 224 based on Foata normal form. 8/664 useless extension candidates. Maximal degree in co-relation 1352. Up to 489 conditions per place. [2024-10-11 23:56:35,382 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 50 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2024-10-11 23:56:35,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 515 flow [2024-10-11 23:56:35,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 382 transitions. [2024-10-11 23:56:35,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44678362573099417 [2024-10-11 23:56:35,384 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 223 flow. Second operand 15 states and 382 transitions. [2024-10-11 23:56:35,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 515 flow [2024-10-11 23:56:35,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 511 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:56:35,387 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 353 flow [2024-10-11 23:56:35,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=353, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2024-10-11 23:56:35,388 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2024-10-11 23:56:35,390 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 353 flow [2024-10-11 23:56:35,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 22.833333333333332) internal successors, (411), 18 states have internal predecessors, (411), 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) [2024-10-11 23:56:35,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:35,390 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1] [2024-10-11 23:56:35,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 23:56:35,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 23:56:35,591 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:56:35,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:35,592 INFO L85 PathProgramCache]: Analyzing trace with hash 966124425, now seen corresponding path program 2 times [2024-10-11 23:56:35,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:35,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351977402] [2024-10-11 23:56:35,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:35,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:56:36,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351977402] [2024-10-11 23:56:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351977402] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425094014] [2024-10-11 23:56:36,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:56:36,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:36,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:36,368 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:36,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 23:56:36,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 23:56:36,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:56:36,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 23:56:36,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:56:36,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:56:37,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425094014] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:37,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:37,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-10-11 23:56:37,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945723891] [2024-10-11 23:56:37,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:37,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 23:56:37,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:37,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 23:56:37,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 23:56:37,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-10-11 23:56:37,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 353 flow. Second operand has 34 states, 34 states have (on average 22.676470588235293) internal successors, (771), 34 states have internal predecessors, (771), 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) [2024-10-11 23:56:37,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:37,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-10-11 23:56:37,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:39,103 INFO L124 PetriNetUnfolderBase]: 303/855 cut-off events. [2024-10-11 23:56:39,104 INFO L125 PetriNetUnfolderBase]: For 1164/1164 co-relation queries the response was YES. [2024-10-11 23:56:39,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 855 events. 303/855 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3812 event pairs, 224 based on Foata normal form. 16/768 useless extension candidates. Maximal degree in co-relation 1618. Up to 489 conditions per place. [2024-10-11 23:56:39,109 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 74 selfloop transitions, 31 changer transitions 0/124 dead transitions. [2024-10-11 23:56:39,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 1027 flow [2024-10-11 23:56:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-11 23:56:39,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-10-11 23:56:39,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 762 transitions. [2024-10-11 23:56:39,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4312393887945671 [2024-10-11 23:56:39,113 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 353 flow. Second operand 31 states and 762 transitions. [2024-10-11 23:56:39,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 1027 flow [2024-10-11 23:56:39,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 124 transitions, 993 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-10-11 23:56:39,120 INFO L231 Difference]: Finished difference. Result has 125 places, 87 transitions, 625 flow [2024-10-11 23:56:39,120 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=625, PETRI_PLACES=125, PETRI_TRANSITIONS=87} [2024-10-11 23:56:39,122 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-10-11 23:56:39,122 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 87 transitions, 625 flow [2024-10-11 23:56:39,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 22.676470588235293) internal successors, (771), 34 states have internal predecessors, (771), 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) [2024-10-11 23:56:39,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:39,123 INFO L204 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1] [2024-10-11 23:56:39,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 23:56:39,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:39,332 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:56:39,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:39,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1514537353, now seen corresponding path program 3 times [2024-10-11 23:56:39,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:39,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186836020] [2024-10-11 23:56:39,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:39,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 108 proven. 540 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:56:41,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:41,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186836020] [2024-10-11 23:56:41,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186836020] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:41,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125992249] [2024-10-11 23:56:41,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 23:56:41,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:41,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:41,276 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:41,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 23:56:41,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 23:56:41,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:56:41,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 23:56:41,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-10-11 23:56:41,969 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:56:41,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125992249] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:41,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:56:41,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [33] total 40 [2024-10-11 23:56:41,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519308277] [2024-10-11 23:56:41,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:41,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 23:56:41,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:41,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 23:56:41,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1246, Unknown=0, NotChecked=0, Total=1560 [2024-10-11 23:56:41,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-10-11 23:56:41,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 87 transitions, 625 flow. Second operand has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 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) [2024-10-11 23:56:41,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:41,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-10-11 23:56:41,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:42,773 INFO L124 PetriNetUnfolderBase]: 303/840 cut-off events. [2024-10-11 23:56:42,773 INFO L125 PetriNetUnfolderBase]: For 1344/1344 co-relation queries the response was YES. [2024-10-11 23:56:42,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 840 events. 303/840 cut-off events. For 1344/1344 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3731 event pairs, 224 based on Foata normal form. 15/752 useless extension candidates. Maximal degree in co-relation 1603. Up to 482 conditions per place. [2024-10-11 23:56:42,779 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 63 selfloop transitions, 41 changer transitions 0/121 dead transitions. [2024-10-11 23:56:42,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 121 transitions, 1252 flow [2024-10-11 23:56:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 23:56:42,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 23:56:42,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 254 transitions. [2024-10-11 23:56:42,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.405103668261563 [2024-10-11 23:56:42,781 INFO L175 Difference]: Start difference. First operand has 125 places, 87 transitions, 625 flow. Second operand 11 states and 254 transitions. [2024-10-11 23:56:42,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 121 transitions, 1252 flow [2024-10-11 23:56:42,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 121 transitions, 1200 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-10-11 23:56:42,793 INFO L231 Difference]: Finished difference. Result has 127 places, 120 transitions, 1214 flow [2024-10-11 23:56:42,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1214, PETRI_PLACES=127, PETRI_TRANSITIONS=120} [2024-10-11 23:56:42,794 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2024-10-11 23:56:42,794 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 120 transitions, 1214 flow [2024-10-11 23:56:42,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 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) [2024-10-11 23:56:42,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:42,795 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:42,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 23:56:42,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 23:56:42,995 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:56:42,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:42,996 INFO L85 PathProgramCache]: Analyzing trace with hash 107205499, now seen corresponding path program 1 times [2024-10-11 23:56:42,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:42,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92254164] [2024-10-11 23:56:42,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:42,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-10-11 23:56:43,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:43,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92254164] [2024-10-11 23:56:43,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92254164] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:43,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384422753] [2024-10-11 23:56:43,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:43,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:43,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:43,543 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:43,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 23:56:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:44,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-11 23:56:44,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 1 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:44,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 1 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:45,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384422753] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:45,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:45,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 33, 33] total 64 [2024-10-11 23:56:45,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405770847] [2024-10-11 23:56:45,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:45,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-10-11 23:56:45,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:45,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-10-11 23:56:45,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=967, Invalid=3065, Unknown=0, NotChecked=0, Total=4032 [2024-10-11 23:56:45,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-10-11 23:56:45,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 120 transitions, 1214 flow. Second operand has 64 states, 64 states have (on average 20.671875) internal successors, (1323), 64 states have internal predecessors, (1323), 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) [2024-10-11 23:56:45,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:45,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-10-11 23:56:45,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:52,555 INFO L124 PetriNetUnfolderBase]: 319/1190 cut-off events. [2024-10-11 23:56:52,556 INFO L125 PetriNetUnfolderBase]: For 9765/9765 co-relation queries the response was YES. [2024-10-11 23:56:52,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4180 conditions, 1190 events. 319/1190 cut-off events. For 9765/9765 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3819 event pairs, 224 based on Foata normal form. 46/1133 useless extension candidates. Maximal degree in co-relation 3286. Up to 487 conditions per place. [2024-10-11 23:56:52,564 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 152 selfloop transitions, 216 changer transitions 0/385 dead transitions. [2024-10-11 23:56:52,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 385 transitions, 5740 flow [2024-10-11 23:56:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2024-10-11 23:56:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2024-10-11 23:56:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 3872 transitions. [2024-10-11 23:56:52,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3732407942934259 [2024-10-11 23:56:52,576 INFO L175 Difference]: Start difference. First operand has 127 places, 120 transitions, 1214 flow. Second operand 182 states and 3872 transitions. [2024-10-11 23:56:52,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 385 transitions, 5740 flow [2024-10-11 23:56:52,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 385 transitions, 5718 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-10-11 23:56:52,604 INFO L231 Difference]: Finished difference. Result has 351 places, 274 transitions, 4082 flow [2024-10-11 23:56:52,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=182, PETRI_FLOW=4082, PETRI_PLACES=351, PETRI_TRANSITIONS=274} [2024-10-11 23:56:52,605 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 295 predicate places. [2024-10-11 23:56:52,605 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 274 transitions, 4082 flow [2024-10-11 23:56:52,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 20.671875) internal successors, (1323), 64 states have internal predecessors, (1323), 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) [2024-10-11 23:56:52,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:52,606 INFO L204 CegarLoopForPetriNet]: trace histogram [32, 32, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2024-10-11 23:56:52,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 23:56:52,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:52,807 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:56:52,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:52,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1654161902, now seen corresponding path program 1 times [2024-10-11 23:56:52,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:52,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233020596] [2024-10-11 23:56:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:52,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms