./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_21-arrayloop2_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_21-arrayloop2_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 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:56:21,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:56:21,715 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:56:21,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:56:21,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:56:21,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:56:21,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:56:21,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:56:21,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:56:21,753 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:56:21,753 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:56:21,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:56:21,754 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:56:21,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:56:21,756 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:56:21,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:56:21,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:56:21,757 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:56:21,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:56:21,757 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:56:21,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:56:21,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:56:21,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:56:21,762 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:56:21,762 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:56:21,762 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:56:21,762 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:56:21,762 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:56:21,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:56:21,763 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:56:21,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:56:21,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:56:21,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:56:21,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:56:21,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:56:21,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:56:21,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:56:21,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:56:21,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:56:21,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:56:21,768 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:56:21,768 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:56:21,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:56:21,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:56:21,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2024-10-11 23:56:22,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:56:22,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:56:22,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:56:22,041 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:56:22,041 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:56:22,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-10-11 23:56:23,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:56:23,723 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:56:23,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-10-11 23:56:23,747 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3f64d7139/08a5e47f2ef54a539dfd1ad493558ff3/FLAG5e3f6bcaf [2024-10-11 23:56:23,761 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3f64d7139/08a5e47f2ef54a539dfd1ad493558ff3 [2024-10-11 23:56:23,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:56:23,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:56:23,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:56:23,768 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:56:23,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:56:23,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:56:23" (1/1) ... [2024-10-11 23:56:23,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f459b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:23, skipping insertion in model container [2024-10-11 23:56:23,775 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:56:23" (1/1) ... [2024-10-11 23:56:23,822 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:56:24,267 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:24,268 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:24,268 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:24,269 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:24,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:56:24,321 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:56:24,369 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:24,371 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:24,371 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:24,371 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 23:56:24,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:56:24,427 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:56:24,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:24 WrapperNode [2024-10-11 23:56:24,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:56:24,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:56:24,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:56:24,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:56:24,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:24" (1/1) ... [2024-10-11 23:56:24,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:24" (1/1) ... [2024-10-11 23:56:24,484 INFO L138 Inliner]: procedures = 271, calls = 25, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 123 [2024-10-11 23:56:24,484 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:56:24,485 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:56:24,485 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:56:24,485 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:56:24,494 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:24" (1/1) ... [2024-10-11 23:56:24,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:24" (1/1) ... [2024-10-11 23:56:24,498 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:24" (1/1) ... [2024-10-11 23:56:24,515 INFO L175 MemorySlicer]: Split 16 memory accesses to 1 slices as follows [16]. 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 23:56:24,515 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:24" (1/1) ... [2024-10-11 23:56:24,516 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:24" (1/1) ... [2024-10-11 23:56:24,522 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:24" (1/1) ... [2024-10-11 23:56:24,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:24" (1/1) ... [2024-10-11 23:56:24,527 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:24" (1/1) ... [2024-10-11 23:56:24,528 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:24" (1/1) ... [2024-10-11 23:56:24,531 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:56:24,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:56:24,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:56:24,534 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:56:24,535 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:24" (1/1) ... [2024-10-11 23:56:24,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:56:24,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:24,574 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 23:56:24,579 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 23:56:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-10-11 23:56:24,630 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-10-11 23:56:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 23:56:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:56:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:56:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:56:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:56:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 23:56:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:56:24,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 23:56:24,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:56:24,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:56:24,634 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 23:56:24,796 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:56:24,798 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:56:25,101 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:56:25,101 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:56:25,312 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:56:25,312 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 23:56:25,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:56:25 BoogieIcfgContainer [2024-10-11 23:56:25,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:56:25,316 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:56:25,316 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:56:25,319 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:56:25,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:56:23" (1/3) ... [2024-10-11 23:56:25,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b3656d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:56:25, skipping insertion in model container [2024-10-11 23:56:25,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:56:24" (2/3) ... [2024-10-11 23:56:25,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b3656d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:56:25, skipping insertion in model container [2024-10-11 23:56:25,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:56:25" (3/3) ... [2024-10-11 23:56:25,322 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2024-10-11 23:56:25,337 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:56:25,337 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-11 23:56:25,338 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:56:25,450 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:56:25,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 122 flow [2024-10-11 23:56:25,522 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events. [2024-10-11 23:56:25,522 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:56:25,525 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 151 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 23:56:25,525 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 57 transitions, 122 flow [2024-10-11 23:56:25,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 55 transitions, 116 flow [2024-10-11 23:56:25,541 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:56:25,548 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;@1dab0a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:56:25,548 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-11 23:56:25,554 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:56:25,554 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-10-11 23:56:25,554 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:56:25,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:25,556 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-11 23:56:25,557 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 23:56:25,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:25,563 INFO L85 PathProgramCache]: Analyzing trace with hash 11326107, now seen corresponding path program 1 times [2024-10-11 23:56:25,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:25,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813658674] [2024-10-11 23:56:25,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:25,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 23:56:25,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126631575] [2024-10-11 23:56:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:25,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:25,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:25,715 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 23:56:25,716 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 23:56:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:25,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 23:56:25,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:25,873 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 23:56:25,873 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:56:25,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:25,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813658674] [2024-10-11 23:56:25,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 23:56:25,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126631575] [2024-10-11 23:56:25,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126631575] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:25,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:25,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 23:56:25,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273857902] [2024-10-11 23:56:25,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:25,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:56:25,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:25,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:56:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:56:25,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2024-10-11 23:56:25,949 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 23:56:25,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:25,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2024-10-11 23:56:25,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:26,317 INFO L124 PetriNetUnfolderBase]: 303/696 cut-off events. [2024-10-11 23:56:26,319 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-11 23:56:26,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 696 events. 303/696 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3657 event pairs, 224 based on Foata normal form. 1/582 useless extension candidates. Maximal degree in co-relation 1162. Up to 490 conditions per place. [2024-10-11 23:56:26,330 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 36 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-10-11 23:56:26,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 202 flow [2024-10-11 23:56:26,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:56:26,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:56:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-10-11 23:56:26,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6608187134502924 [2024-10-11 23:56:26,345 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 116 flow. Second operand 3 states and 113 transitions. [2024-10-11 23:56:26,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 202 flow [2024-10-11 23:56:26,348 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 23:56:26,351 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 130 flow [2024-10-11 23:56:26,355 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 23:56:26,360 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2024-10-11 23:56:26,361 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 130 flow [2024-10-11 23:56:26,361 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 23:56:26,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:26,361 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-11 23:56:26,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 23:56:26,562 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 23:56:26,563 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 23:56:26,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:26,563 INFO L85 PathProgramCache]: Analyzing trace with hash 11326128, now seen corresponding path program 1 times [2024-10-11 23:56:26,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:26,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872405059] [2024-10-11 23:56:26,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:26,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:26,719 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 23:56:26,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:26,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872405059] [2024-10-11 23:56:26,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872405059] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:26,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:26,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:26,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470751544] [2024-10-11 23:56:26,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:26,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:56:26,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:26,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:56:26,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:56:26,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2024-10-11 23:56:26,731 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 23:56:26,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:26,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2024-10-11 23:56:26,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:27,042 INFO L124 PetriNetUnfolderBase]: 303/710 cut-off events. [2024-10-11 23:56:27,042 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 23:56:27,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 710 events. 303/710 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3762 event pairs, 224 based on Foata normal form. 4/599 useless extension candidates. Maximal degree in co-relation 1203. Up to 495 conditions per place. [2024-10-11 23:56:27,064 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 34 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-11 23:56:27,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 206 flow [2024-10-11 23:56:27,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:56:27,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:56:27,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-10-11 23:56:27,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6432748538011696 [2024-10-11 23:56:27,067 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 130 flow. Second operand 3 states and 110 transitions. [2024-10-11 23:56:27,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 206 flow [2024-10-11 23:56:27,068 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 23:56:27,075 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 144 flow [2024-10-11 23:56:27,078 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 23:56:27,079 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-10-11 23:56:27,079 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 144 flow [2024-10-11 23:56:27,079 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 23:56:27,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:27,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 23:56:27,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:56:27,080 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 23:56:27,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:27,082 INFO L85 PathProgramCache]: Analyzing trace with hash -2000502049, now seen corresponding path program 1 times [2024-10-11 23:56:27,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:27,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107346840] [2024-10-11 23:56:27,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:27,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:27,267 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 23:56:27,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:27,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107346840] [2024-10-11 23:56:27,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107346840] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:27,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:27,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:27,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650644174] [2024-10-11 23:56:27,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:27,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:56:27,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:27,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:56:27,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:56:27,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-10-11 23:56:27,293 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 23:56:27,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:27,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-10-11 23:56:27,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:27,606 INFO L124 PetriNetUnfolderBase]: 303/706 cut-off events. [2024-10-11 23:56:27,606 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-11 23:56:27,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 706 events. 303/706 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3751 event pairs, 224 based on Foata normal form. 4/599 useless extension candidates. Maximal degree in co-relation 1190. Up to 499 conditions per place. [2024-10-11 23:56:27,612 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 35 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-10-11 23:56:27,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 222 flow [2024-10-11 23:56:27,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:56:27,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:56:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-10-11 23:56:27,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-10-11 23:56:27,617 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 144 flow. Second operand 4 states and 127 transitions. [2024-10-11 23:56:27,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 222 flow [2024-10-11 23:56:27,618 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 23:56:27,620 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 160 flow [2024-10-11 23:56:27,620 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 23:56:27,621 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-10-11 23:56:27,622 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 160 flow [2024-10-11 23:56:27,623 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 23:56:27,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:27,623 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:56:27,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:56:27,623 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 23:56:27,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:27,624 INFO L85 PathProgramCache]: Analyzing trace with hash 10029226, now seen corresponding path program 1 times [2024-10-11 23:56:27,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:27,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197670245] [2024-10-11 23:56:27,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:27,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:27,764 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 23:56:27,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:27,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197670245] [2024-10-11 23:56:27,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197670245] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:27,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112032046] [2024-10-11 23:56:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:27,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:27,767 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 23:56:27,769 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 23:56:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:27,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:56:27,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:27,933 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 23:56:27,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:27,973 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 23:56:27,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112032046] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:27,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:27,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 23:56:27,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743050833] [2024-10-11 23:56:27,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:27,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:56:27,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:27,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:56:27,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:56:28,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-10-11 23:56:28,009 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 23:56:28,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:28,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-10-11 23:56:28,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:28,526 INFO L124 PetriNetUnfolderBase]: 303/722 cut-off events. [2024-10-11 23:56:28,526 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-11 23:56:28,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 722 events. 303/722 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3834 event pairs, 224 based on Foata normal form. 6/617 useless extension candidates. Maximal degree in co-relation 1209. Up to 489 conditions per place. [2024-10-11 23:56:28,530 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 38 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2024-10-11 23:56:28,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 66 transitions, 284 flow [2024-10-11 23:56:28,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 23:56:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 23:56:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-10-11 23:56:28,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46393762183235865 [2024-10-11 23:56:28,534 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 160 flow. Second operand 9 states and 238 transitions. [2024-10-11 23:56:28,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 66 transitions, 284 flow [2024-10-11 23:56:28,536 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 23:56:28,537 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 210 flow [2024-10-11 23:56:28,537 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 23:56:28,538 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-10-11 23:56:28,538 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 210 flow [2024-10-11 23:56:28,538 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 23:56:28,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:28,539 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 23:56:28,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 23:56:28,742 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 23:56:28,743 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 23:56:28,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:28,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1048142425, now seen corresponding path program 1 times [2024-10-11 23:56:28,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:28,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000574496] [2024-10-11 23:56:28,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:28,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:28,946 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 23:56:28,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:28,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000574496] [2024-10-11 23:56:28,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000574496] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:28,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270931672] [2024-10-11 23:56:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:28,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:28,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:28,952 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 23:56:28,954 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 23:56:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:29,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:56:29,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:29,154 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 23:56:29,154 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:56:29,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270931672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:29,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:56:29,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-11 23:56:29,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710533171] [2024-10-11 23:56:29,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:29,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:56:29,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:29,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:56:29,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 23:56:29,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2024-10-11 23:56:29,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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 23:56:29,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:29,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2024-10-11 23:56:29,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:29,393 INFO L124 PetriNetUnfolderBase]: 303/718 cut-off events. [2024-10-11 23:56:29,393 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-10-11 23:56:29,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1328 conditions, 718 events. 303/718 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3811 event pairs, 224 based on Foata normal form. 4/611 useless extension candidates. Maximal degree in co-relation 1226. Up to 487 conditions per place. [2024-10-11 23:56:29,398 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 30 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2024-10-11 23:56:29,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 60 transitions, 272 flow [2024-10-11 23:56:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:56:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:56:29,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-10-11 23:56:29,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-10-11 23:56:29,400 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 210 flow. Second operand 4 states and 126 transitions. [2024-10-11 23:56:29,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 60 transitions, 272 flow [2024-10-11 23:56:29,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 60 transitions, 264 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 23:56:29,405 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 204 flow [2024-10-11 23:56:29,405 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=4, PETRI_FLOW=204, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2024-10-11 23:56:29,409 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-10-11 23:56:29,409 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 204 flow [2024-10-11 23:56:29,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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 23:56:29,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:29,409 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1] [2024-10-11 23:56:29,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 23:56:29,613 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 23:56:29,614 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 23:56:29,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:29,614 INFO L85 PathProgramCache]: Analyzing trace with hash -630290888, now seen corresponding path program 1 times [2024-10-11 23:56:29,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:29,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514335463] [2024-10-11 23:56:29,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:29,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:29,771 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 23:56:29,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:29,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514335463] [2024-10-11 23:56:29,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514335463] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:29,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:29,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:56:29,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185956741] [2024-10-11 23:56:29,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:29,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:56:29,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:29,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:56:29,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:56:29,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2024-10-11 23:56:29,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 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 23:56:29,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:29,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2024-10-11 23:56:29,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:30,257 INFO L124 PetriNetUnfolderBase]: 303/716 cut-off events. [2024-10-11 23:56:30,258 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-10-11 23:56:30,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1331 conditions, 716 events. 303/716 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3804 event pairs, 224 based on Foata normal form. 2/607 useless extension candidates. Maximal degree in co-relation 1232. Up to 493 conditions per place. [2024-10-11 23:56:30,262 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 30 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2024-10-11 23:56:30,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 60 transitions, 280 flow [2024-10-11 23:56:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:56:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:56:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-10-11 23:56:30,263 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-10-11 23:56:30,263 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 204 flow. Second operand 4 states and 126 transitions. [2024-10-11 23:56:30,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 60 transitions, 280 flow [2024-10-11 23:56:30,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 60 transitions, 260 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 23:56:30,266 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 208 flow [2024-10-11 23:56:30,266 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=208, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-10-11 23:56:30,267 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-10-11 23:56:30,267 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 208 flow [2024-10-11 23:56:30,267 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 23:56:30,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:30,267 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1] [2024-10-11 23:56:30,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 23:56:30,268 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 23:56:30,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:30,268 INFO L85 PathProgramCache]: Analyzing trace with hash -119143318, now seen corresponding path program 2 times [2024-10-11 23:56:30,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:30,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088376621] [2024-10-11 23:56:30,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:30,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:30,444 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 23:56:30,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:30,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088376621] [2024-10-11 23:56:30,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088376621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:30,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:56:30,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:56:30,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027843289] [2024-10-11 23:56:30,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:30,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:56:30,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:30,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:56:30,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:56:30,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-10-11 23:56:30,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 208 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 23:56:30,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:30,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-10-11 23:56:30,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:30,743 INFO L124 PetriNetUnfolderBase]: 303/714 cut-off events. [2024-10-11 23:56:30,743 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-10-11 23:56:30,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 714 events. 303/714 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3797 event pairs, 224 based on Foata normal form. 2/607 useless extension candidates. Maximal degree in co-relation 1213. Up to 498 conditions per place. [2024-10-11 23:56:30,747 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 45 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-10-11 23:56:30,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 372 flow [2024-10-11 23:56:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:56:30,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:56:30,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-10-11 23:56:30,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-10-11 23:56:30,749 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 208 flow. Second operand 4 states and 130 transitions. [2024-10-11 23:56:30,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 372 flow [2024-10-11 23:56:30,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 348 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-11 23:56:30,753 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 218 flow [2024-10-11 23:56:30,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=67, 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=218, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-10-11 23:56:30,756 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2024-10-11 23:56:30,756 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 218 flow [2024-10-11 23:56:30,756 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 23:56:30,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:30,756 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2024-10-11 23:56:30,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 23:56:30,756 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 23:56:30,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:30,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1284659090, now seen corresponding path program 1 times [2024-10-11 23:56:30,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:30,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679350067] [2024-10-11 23:56:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:30,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:31,071 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 23:56:31,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679350067] [2024-10-11 23:56:31,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679350067] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008402573] [2024-10-11 23:56:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:31,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:31,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:31,073 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 23:56:31,075 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 23:56:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:31,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:56:31,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:31,376 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 23:56:31,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:31,483 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 23:56:31,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008402573] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:31,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:31,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-11 23:56:31,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495184737] [2024-10-11 23:56:31,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:31,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 23:56:31,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:31,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 23:56:31,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-11 23:56:31,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-10-11 23:56:31,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 218 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 23:56:31,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:31,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-10-11 23:56:31,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:32,402 INFO L124 PetriNetUnfolderBase]: 303/762 cut-off events. [2024-10-11 23:56:32,403 INFO L125 PetriNetUnfolderBase]: For 218/218 co-relation queries the response was YES. [2024-10-11 23:56:32,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 762 events. 303/762 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3822 event pairs, 224 based on Foata normal form. 8/661 useless extension candidates. Maximal degree in co-relation 1353. Up to 489 conditions per place. [2024-10-11 23:56:32,407 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 50 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2024-10-11 23:56:32,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 84 transitions, 510 flow [2024-10-11 23:56:32,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:56:32,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:56:32,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 382 transitions. [2024-10-11 23:56:32,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44678362573099417 [2024-10-11 23:56:32,409 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 218 flow. Second operand 15 states and 382 transitions. [2024-10-11 23:56:32,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 84 transitions, 510 flow [2024-10-11 23:56:32,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 506 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:56:32,412 INFO L231 Difference]: Finished difference. Result has 89 places, 70 transitions, 348 flow [2024-10-11 23:56:32,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=70, 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=348, PETRI_PLACES=89, PETRI_TRANSITIONS=70} [2024-10-11 23:56:32,413 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-10-11 23:56:32,413 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 70 transitions, 348 flow [2024-10-11 23:56:32,414 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 23:56:32,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:32,415 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1] [2024-10-11 23:56:32,434 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 23:56:32,619 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 23:56:32,620 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 23:56:32,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:32,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1892994834, now seen corresponding path program 2 times [2024-10-11 23:56:32,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:32,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704496226] [2024-10-11 23:56:32,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:32,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:33,319 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 23:56:33,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:33,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704496226] [2024-10-11 23:56:33,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704496226] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:33,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536067349] [2024-10-11 23:56:33,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:56:33,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:33,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:33,322 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 23:56:33,324 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 23:56:33,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 23:56:33,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:56:33,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 23:56:33,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:33,779 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 23:56:33,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:34,090 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 23:56:34,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536067349] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:34,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:34,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-10-11 23:56:34,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326703997] [2024-10-11 23:56:34,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:34,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 23:56:34,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:34,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 23:56:34,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 23:56:34,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-10-11 23:56:34,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 70 transitions, 348 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 23:56:34,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:34,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-10-11 23:56:34,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:36,346 INFO L124 PetriNetUnfolderBase]: 303/858 cut-off events. [2024-10-11 23:56:36,346 INFO L125 PetriNetUnfolderBase]: For 1057/1057 co-relation queries the response was YES. [2024-10-11 23:56:36,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 858 events. 303/858 cut-off events. For 1057/1057 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3856 event pairs, 224 based on Foata normal form. 16/765 useless extension candidates. Maximal degree in co-relation 1619. Up to 489 conditions per place. [2024-10-11 23:56:36,352 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 74 selfloop transitions, 31 changer transitions 0/124 dead transitions. [2024-10-11 23:56:36,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 124 transitions, 1022 flow [2024-10-11 23:56:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-11 23:56:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-10-11 23:56:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 762 transitions. [2024-10-11 23:56:36,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4312393887945671 [2024-10-11 23:56:36,357 INFO L175 Difference]: Start difference. First operand has 89 places, 70 transitions, 348 flow. Second operand 31 states and 762 transitions. [2024-10-11 23:56:36,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 124 transitions, 1022 flow [2024-10-11 23:56:36,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 124 transitions, 952 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-10-11 23:56:36,365 INFO L231 Difference]: Finished difference. Result has 123 places, 87 transitions, 584 flow [2024-10-11 23:56:36,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=84, 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=584, PETRI_PLACES=123, PETRI_TRANSITIONS=87} [2024-10-11 23:56:36,366 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 67 predicate places. [2024-10-11 23:56:36,367 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 87 transitions, 584 flow [2024-10-11 23:56:36,368 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 23:56:36,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:36,368 INFO L204 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1] [2024-10-11 23:56:36,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 23:56:36,572 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 23:56:36,573 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 23:56:36,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:36,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1157987858, now seen corresponding path program 3 times [2024-10-11 23:56:36,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:36,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518265675] [2024-10-11 23:56:36,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:36,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:38,678 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 23:56:38,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:38,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518265675] [2024-10-11 23:56:38,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518265675] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:38,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780005963] [2024-10-11 23:56:38,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 23:56:38,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:38,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:38,681 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 23:56:38,683 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 23:56:39,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 23:56:39,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:56:39,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 23:56:39,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:39,438 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 23:56:39,438 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:56:39,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780005963] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:56:39,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:56:39,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [33] total 40 [2024-10-11 23:56:39,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23566079] [2024-10-11 23:56:39,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:56:39,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 23:56:39,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:39,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 23:56:39,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1246, Unknown=0, NotChecked=0, Total=1560 [2024-10-11 23:56:39,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-10-11 23:56:39,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 87 transitions, 584 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 23:56:39,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:39,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-10-11 23:56:39,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:40,326 INFO L124 PetriNetUnfolderBase]: 303/843 cut-off events. [2024-10-11 23:56:40,326 INFO L125 PetriNetUnfolderBase]: For 1169/1169 co-relation queries the response was YES. [2024-10-11 23:56:40,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1979 conditions, 843 events. 303/843 cut-off events. For 1169/1169 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3776 event pairs, 224 based on Foata normal form. 15/749 useless extension candidates. Maximal degree in co-relation 1586. Up to 482 conditions per place. [2024-10-11 23:56:40,333 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 63 selfloop transitions, 41 changer transitions 0/121 dead transitions. [2024-10-11 23:56:40,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 121 transitions, 1172 flow [2024-10-11 23:56:40,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 23:56:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 23:56:40,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 254 transitions. [2024-10-11 23:56:40,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.405103668261563 [2024-10-11 23:56:40,335 INFO L175 Difference]: Start difference. First operand has 123 places, 87 transitions, 584 flow. Second operand 11 states and 254 transitions. [2024-10-11 23:56:40,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 121 transitions, 1172 flow [2024-10-11 23:56:40,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 1088 flow, removed 18 selfloop flow, removed 12 redundant places. [2024-10-11 23:56:40,344 INFO L231 Difference]: Finished difference. Result has 125 places, 120 transitions, 1102 flow [2024-10-11 23:56:40,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=109, 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=1102, PETRI_PLACES=125, PETRI_TRANSITIONS=120} [2024-10-11 23:56:40,345 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-10-11 23:56:40,345 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 120 transitions, 1102 flow [2024-10-11 23:56:40,346 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 23:56:40,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:40,346 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 23:56:40,365 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 23:56:40,546 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 23:56:40,547 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 23:56:40,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:40,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1296191770, now seen corresponding path program 1 times [2024-10-11 23:56:40,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:40,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555691513] [2024-10-11 23:56:40,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:40,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:41,106 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 23:56:41,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:41,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555691513] [2024-10-11 23:56:41,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555691513] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:41,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374986105] [2024-10-11 23:56:41,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:41,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:41,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:41,109 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 23:56:41,110 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 23:56:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:41,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-11 23:56:41,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:42,389 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 23:56:42,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:43,315 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 23:56:43,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374986105] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:43,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:43,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 33, 33] total 64 [2024-10-11 23:56:43,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092613697] [2024-10-11 23:56:43,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:43,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-10-11 23:56:43,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:43,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-10-11 23:56:43,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=967, Invalid=3065, Unknown=0, NotChecked=0, Total=4032 [2024-10-11 23:56:43,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-10-11 23:56:43,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 120 transitions, 1102 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 23:56:43,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:43,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-10-11 23:56:43,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:50,612 INFO L124 PetriNetUnfolderBase]: 319/1193 cut-off events. [2024-10-11 23:56:50,612 INFO L125 PetriNetUnfolderBase]: For 8428/8428 co-relation queries the response was YES. [2024-10-11 23:56:50,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4054 conditions, 1193 events. 319/1193 cut-off events. For 8428/8428 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3844 event pairs, 224 based on Foata normal form. 46/1130 useless extension candidates. Maximal degree in co-relation 3203. Up to 487 conditions per place. [2024-10-11 23:56:50,620 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 152 selfloop transitions, 216 changer transitions 0/385 dead transitions. [2024-10-11 23:56:50,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 385 transitions, 5482 flow [2024-10-11 23:56:50,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2024-10-11 23:56:50,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2024-10-11 23:56:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 3872 transitions. [2024-10-11 23:56:50,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3732407942934259 [2024-10-11 23:56:50,636 INFO L175 Difference]: Start difference. First operand has 125 places, 120 transitions, 1102 flow. Second operand 182 states and 3872 transitions. [2024-10-11 23:56:50,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 385 transitions, 5482 flow [2024-10-11 23:56:50,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 385 transitions, 5396 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-10-11 23:56:50,730 INFO L231 Difference]: Finished difference. Result has 349 places, 274 transitions, 3761 flow [2024-10-11 23:56:50,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=121, 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=3761, PETRI_PLACES=349, PETRI_TRANSITIONS=274} [2024-10-11 23:56:50,731 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 293 predicate places. [2024-10-11 23:56:50,733 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 274 transitions, 3761 flow [2024-10-11 23:56:50,734 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 23:56:50,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:50,734 INFO L204 CegarLoopForPetriNet]: trace histogram [32, 32, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2024-10-11 23:56:50,758 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 23:56:50,935 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 23:56:50,935 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 23:56:50,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:50,936 INFO L85 PathProgramCache]: Analyzing trace with hash 481176880, now seen corresponding path program 1 times [2024-10-11 23:56:50,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:50,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675180524] [2024-10-11 23:56:50,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:50,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms