./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4a3fff277216174585e9d802eee36c2b619da26d56e48ed5261f2ab62942b7a --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:20:18,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:20:18,311 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:20:18,314 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:20:18,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:20:18,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:20:18,335 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:20:18,335 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:20:18,336 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:20:18,336 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:20:18,337 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:20:18,337 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:20:18,337 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:20:18,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:20:18,337 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:20:18,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:20:18,338 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:20:18,338 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:20:18,338 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:20:18,338 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:20:18,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:20:18,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:20:18,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:20:18,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:20:18,339 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:20:18,339 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:20:18,339 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:20:18,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:20:18,339 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:20:18,339 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:20:18,339 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:20:18,339 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:20:18,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:20:18,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:20:18,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:20:18,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:20:18,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:20:18,340 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:20:18,340 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:20:18,340 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:20:18,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:20:18,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:20:18,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:20:18,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:20:18,341 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:20:18,341 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4a3fff277216174585e9d802eee36c2b619da26d56e48ed5261f2ab62942b7a [2025-03-04 15:20:18,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:20:18,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:20:18,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:20:18,541 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:20:18,541 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:20:18,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2025-03-04 15:20:19,641 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de6a73bab/8eee907cdddf4fe4898efd473876cfb9/FLAGa76abfa88 [2025-03-04 15:20:19,909 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:20:19,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2025-03-04 15:20:19,923 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de6a73bab/8eee907cdddf4fe4898efd473876cfb9/FLAGa76abfa88 [2025-03-04 15:20:20,207 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de6a73bab/8eee907cdddf4fe4898efd473876cfb9 [2025-03-04 15:20:20,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:20:20,210 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:20:20,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:20:20,211 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:20:20,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:20:20,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:20:20" (1/1) ... [2025-03-04 15:20:20,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ccf3e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20, skipping insertion in model container [2025-03-04 15:20:20,215 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:20:20" (1/1) ... [2025-03-04 15:20:20,246 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:20:20,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:20:20,601 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:20:20,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:20:20,706 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:20:20,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20 WrapperNode [2025-03-04 15:20:20,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:20:20,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:20:20,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:20:20,708 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:20:20,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20" (1/1) ... [2025-03-04 15:20:20,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20" (1/1) ... [2025-03-04 15:20:20,749 INFO L138 Inliner]: procedures = 372, calls = 87, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 184 [2025-03-04 15:20:20,750 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:20:20,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:20:20,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:20:20,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:20:20,756 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20" (1/1) ... [2025-03-04 15:20:20,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20" (1/1) ... [2025-03-04 15:20:20,759 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20" (1/1) ... [2025-03-04 15:20:20,774 INFO L175 MemorySlicer]: Split 78 memory accesses to 2 slices as follows [64, 14]. 82 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60, 0]. The 11 writes are split as follows [1, 10]. [2025-03-04 15:20:20,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20" (1/1) ... [2025-03-04 15:20:20,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20" (1/1) ... [2025-03-04 15:20:20,783 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20" (1/1) ... [2025-03-04 15:20:20,785 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20" (1/1) ... [2025-03-04 15:20:20,786 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20" (1/1) ... [2025-03-04 15:20:20,787 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20" (1/1) ... [2025-03-04 15:20:20,795 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:20:20,796 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:20:20,797 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:20:20,797 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:20:20,798 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20" (1/1) ... [2025-03-04 15:20:20,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:20:20,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:20:20,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:20:20,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:20:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 15:20:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 15:20:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-04 15:20:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-04 15:20:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 15:20:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:20:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:20:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:20:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:20:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 15:20:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 15:20:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:20:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 15:20:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 15:20:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-04 15:20:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-04 15:20:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:20:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:20:20,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:20:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:20:20,847 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:20:20,954 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:20:20,955 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:20:21,227 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:20:21,227 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:20:21,509 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:20:21,509 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:20:21,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:20:21 BoogieIcfgContainer [2025-03-04 15:20:21,510 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:20:21,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:20:21,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:20:21,514 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:20:21,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:20:20" (1/3) ... [2025-03-04 15:20:21,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162bbf3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:20:21, skipping insertion in model container [2025-03-04 15:20:21,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:20:20" (2/3) ... [2025-03-04 15:20:21,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162bbf3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:20:21, skipping insertion in model container [2025-03-04 15:20:21,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:20:21" (3/3) ... [2025-03-04 15:20:21,516 INFO L128 eAbstractionObserver]: Analyzing ICFG 09-regions_19-nested_nr.i [2025-03-04 15:20:21,527 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:20:21,528 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09-regions_19-nested_nr.i that has 2 procedures, 24 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2025-03-04 15:20:21,529 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:20:21,571 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 15:20:21,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 25 transitions, 54 flow [2025-03-04 15:20:21,621 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2025-03-04 15:20:21,624 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:20:21,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2025-03-04 15:20:21,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 25 transitions, 54 flow [2025-03-04 15:20:21,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 11 places, 12 transitions, 24 flow [2025-03-04 15:20:21,635 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:20:21,646 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;@6495f542, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:20:21,646 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-04 15:20:21,650 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:20:21,651 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-04 15:20:21,651 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:20:21,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:21,651 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 15:20:21,652 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2025-03-04 15:20:21,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:21,655 INFO L85 PathProgramCache]: Analyzing trace with hash 450935, now seen corresponding path program 1 times [2025-03-04 15:20:21,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:21,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147156836] [2025-03-04 15:20:21,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:21,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:21,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 15:20:21,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 15:20:21,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:21,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:21,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147156836] [2025-03-04 15:20:21,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147156836] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:21,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:21,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:20:21,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812666214] [2025-03-04 15:20:21,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:21,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:20:21,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:21,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:20:21,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:20:21,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2025-03-04 15:20:21,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 12 transitions, 24 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2025-03-04 15:20:21,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:21,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2025-03-04 15:20:21,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:22,014 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2025-03-04 15:20:22,015 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:20:22,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 15 events. 2/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2025-03-04 15:20:22,016 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 7 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2025-03-04 15:20:22,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 14 transitions, 48 flow [2025-03-04 15:20:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:20:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:20:22,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2025-03-04 15:20:22,025 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33 [2025-03-04 15:20:22,025 INFO L175 Difference]: Start difference. First operand has 11 places, 12 transitions, 24 flow. Second operand 4 states and 33 transitions. [2025-03-04 15:20:22,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 14 transitions, 48 flow [2025-03-04 15:20:22,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 14 transitions, 48 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:20:22,029 INFO L231 Difference]: Finished difference. Result has 16 places, 14 transitions, 48 flow [2025-03-04 15:20:22,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=16, PETRI_TRANSITIONS=14} [2025-03-04 15:20:22,032 INFO L279 CegarLoopForPetriNet]: 11 programPoint places, 5 predicate places. [2025-03-04 15:20:22,032 INFO L471 AbstractCegarLoop]: Abstraction has has 16 places, 14 transitions, 48 flow [2025-03-04 15:20:22,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2025-03-04 15:20:22,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:22,033 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 15:20:22,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:20:22,033 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2025-03-04 15:20:22,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash 549304621, now seen corresponding path program 1 times [2025-03-04 15:20:22,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:22,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102737253] [2025-03-04 15:20:22,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:22,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:22,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:20:22,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:20:22,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:22,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:22,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:22,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102737253] [2025-03-04 15:20:22,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102737253] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:20:22,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930222395] [2025-03-04 15:20:22,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:22,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:20:22,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:20:22,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:20:22,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:20:22,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:20:22,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:20:22,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:22,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:22,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:20:22,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:20:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:22,315 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:20:22,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930222395] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:22,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:20:22,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-04 15:20:22,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606860823] [2025-03-04 15:20:22,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:22,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:20:22,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:22,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:20:22,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:20:22,329 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2025-03-04 15:20:22,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 14 transitions, 48 flow. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2025-03-04 15:20:22,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:22,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2025-03-04 15:20:22,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:22,432 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-03-04 15:20:22,433 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 15:20:22,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 14 events. 2/14 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2025-03-04 15:20:22,433 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 3 selfloop transitions, 6 changer transitions 0/13 dead transitions. [2025-03-04 15:20:22,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 13 transitions, 62 flow [2025-03-04 15:20:22,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:20:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:20:22,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 40 transitions. [2025-03-04 15:20:22,434 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.26666666666666666 [2025-03-04 15:20:22,434 INFO L175 Difference]: Start difference. First operand has 16 places, 14 transitions, 48 flow. Second operand 6 states and 40 transitions. [2025-03-04 15:20:22,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 13 transitions, 62 flow [2025-03-04 15:20:22,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:20:22,435 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 54 flow [2025-03-04 15:20:22,436 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=54, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2025-03-04 15:20:22,436 INFO L279 CegarLoopForPetriNet]: 11 programPoint places, 8 predicate places. [2025-03-04 15:20:22,436 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 54 flow [2025-03-04 15:20:22,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2025-03-04 15:20:22,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:22,436 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-04 15:20:22,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 15:20:22,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:20:22,637 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2025-03-04 15:20:22,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:22,637 INFO L85 PathProgramCache]: Analyzing trace with hash -151425530, now seen corresponding path program 1 times [2025-03-04 15:20:22,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:22,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997489820] [2025-03-04 15:20:22,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:22,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:22,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:20:22,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:20:22,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:22,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:20:22,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:22,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997489820] [2025-03-04 15:20:22,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997489820] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:22,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:22,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:20:22,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941994909] [2025-03-04 15:20:22,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:22,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:20:22,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:22,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:20:22,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:20:22,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2025-03-04 15:20:22,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2025-03-04 15:20:22,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:22,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2025-03-04 15:20:22,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:22,755 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2025-03-04 15:20:22,755 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-04 15:20:22,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 13 events. 2/13 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 16. Up to 7 conditions per place. [2025-03-04 15:20:22,756 INFO L140 encePairwiseOnDemand]: 22/25 looper letters, 4 selfloop transitions, 4 changer transitions 0/12 dead transitions. [2025-03-04 15:20:22,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 66 flow [2025-03-04 15:20:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:20:22,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:20:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2025-03-04 15:20:22,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29333333333333333 [2025-03-04 15:20:22,757 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 54 flow. Second operand 3 states and 22 transitions. [2025-03-04 15:20:22,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 66 flow [2025-03-04 15:20:22,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 44 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-04 15:20:22,758 INFO L231 Difference]: Finished difference. Result has 14 places, 12 transitions, 36 flow [2025-03-04 15:20:22,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=14, PETRI_TRANSITIONS=12} [2025-03-04 15:20:22,758 INFO L279 CegarLoopForPetriNet]: 11 programPoint places, 3 predicate places. [2025-03-04 15:20:22,758 INFO L471 AbstractCegarLoop]: Abstraction has has 14 places, 12 transitions, 36 flow [2025-03-04 15:20:22,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2025-03-04 15:20:22,759 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:22,759 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:20:22,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:20:22,759 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2025-03-04 15:20:22,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:22,759 INFO L85 PathProgramCache]: Analyzing trace with hash -151424905, now seen corresponding path program 1 times [2025-03-04 15:20:22,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:22,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379597284] [2025-03-04 15:20:22,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:22,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:22,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:20:22,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:20:22,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:22,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:22,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:22,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379597284] [2025-03-04 15:20:22,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379597284] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:20:22,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978503049] [2025-03-04 15:20:22,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:22,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:20:22,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:20:22,898 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:20:22,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:20:22,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:20:23,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:20:23,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:23,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:23,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:20:23,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:20:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:23,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:20:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:20:23,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978503049] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:20:23,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:20:23,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-04 15:20:23,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858028244] [2025-03-04 15:20:23,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:20:23,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:20:23,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:23,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:20:23,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:20:23,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2025-03-04 15:20:23,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 12 transitions, 36 flow. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:23,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:23,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2025-03-04 15:20:23,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:23,193 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2025-03-04 15:20:23,193 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-03-04 15:20:23,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 17 events. 2/17 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 9. Up to 5 conditions per place. [2025-03-04 15:20:23,193 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 4 selfloop transitions, 7 changer transitions 0/15 dead transitions. [2025-03-04 15:20:23,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 15 transitions, 73 flow [2025-03-04 15:20:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:20:23,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:20:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 48 transitions. [2025-03-04 15:20:23,195 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2742857142857143 [2025-03-04 15:20:23,195 INFO L175 Difference]: Start difference. First operand has 14 places, 12 transitions, 36 flow. Second operand 7 states and 48 transitions. [2025-03-04 15:20:23,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 15 transitions, 73 flow [2025-03-04 15:20:23,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 59 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:20:23,196 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 62 flow [2025-03-04 15:20:23,196 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=62, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2025-03-04 15:20:23,196 INFO L279 CegarLoopForPetriNet]: 11 programPoint places, 9 predicate places. [2025-03-04 15:20:23,197 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 62 flow [2025-03-04 15:20:23,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:20:23,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:23,197 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1] [2025-03-04 15:20:23,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 15:20:23,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-04 15:20:23,397 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2025-03-04 15:20:23,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:23,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1774234807, now seen corresponding path program 2 times [2025-03-04 15:20:23,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:23,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245091513] [2025-03-04 15:20:23,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:20:23,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:23,416 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-04 15:20:23,421 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 13 statements. [2025-03-04 15:20:23,421 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:20:23,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:20:23,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:23,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245091513] [2025-03-04 15:20:23,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245091513] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:23,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:23,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:20:23,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115924573] [2025-03-04 15:20:23,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:23,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:20:23,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:23,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:20:23,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:20:23,505 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2025-03-04 15:20:23,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2025-03-04 15:20:23,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:23,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2025-03-04 15:20:23,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:23,573 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2025-03-04 15:20:23,573 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-03-04 15:20:23,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 20 events. 2/20 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 18. Up to 14 conditions per place. [2025-03-04 15:20:23,575 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 12 selfloop transitions, 3 changer transitions 0/17 dead transitions. [2025-03-04 15:20:23,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 96 flow [2025-03-04 15:20:23,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:20:23,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:20:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2025-03-04 15:20:23,577 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32 [2025-03-04 15:20:23,577 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 62 flow. Second operand 4 states and 32 transitions. [2025-03-04 15:20:23,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 96 flow [2025-03-04 15:20:23,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:20:23,580 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 80 flow [2025-03-04 15:20:23,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2025-03-04 15:20:23,580 INFO L279 CegarLoopForPetriNet]: 11 programPoint places, 12 predicate places. [2025-03-04 15:20:23,581 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 80 flow [2025-03-04 15:20:23,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2025-03-04 15:20:23,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:23,582 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2025-03-04 15:20:23,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:20:23,582 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2025-03-04 15:20:23,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:23,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1932963920, now seen corresponding path program 1 times [2025-03-04 15:20:23,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:23,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731240569] [2025-03-04 15:20:23,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:23,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:23,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:20:23,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:20:23,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:23,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 15:20:23,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:23,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731240569] [2025-03-04 15:20:23,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731240569] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:20:23,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626520087] [2025-03-04 15:20:23,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:23,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:20:23,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:20:23,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:20:23,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:20:23,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:20:23,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:20:23,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:23,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:23,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 15:20:23,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:20:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 15:20:23,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:20:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 15:20:24,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626520087] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:20:24,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:20:24,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-04 15:20:24,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025751961] [2025-03-04 15:20:24,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:20:24,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-04 15:20:24,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:24,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-04 15:20:24,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-04 15:20:24,054 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2025-03-04 15:20:24,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 80 flow. Second operand has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 18 states have internal predecessors, (111), 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) [2025-03-04 15:20:24,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:24,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2025-03-04 15:20:24,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:24,282 INFO L124 PetriNetUnfolderBase]: 2/32 cut-off events. [2025-03-04 15:20:24,282 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2025-03-04 15:20:24,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 32 events. 2/32 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 4/36 useless extension candidates. Maximal degree in co-relation 72. Up to 8 conditions per place. [2025-03-04 15:20:24,282 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 6 selfloop transitions, 15 changer transitions 0/25 dead transitions. [2025-03-04 15:20:24,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 170 flow [2025-03-04 15:20:24,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 15:20:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-04 15:20:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 98 transitions. [2025-03-04 15:20:24,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2613333333333333 [2025-03-04 15:20:24,285 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 80 flow. Second operand 15 states and 98 transitions. [2025-03-04 15:20:24,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 170 flow [2025-03-04 15:20:24,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:20:24,286 INFO L231 Difference]: Finished difference. Result has 40 places, 25 transitions, 175 flow [2025-03-04 15:20:24,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=175, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2025-03-04 15:20:24,287 INFO L279 CegarLoopForPetriNet]: 11 programPoint places, 29 predicate places. [2025-03-04 15:20:24,287 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 175 flow [2025-03-04 15:20:24,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 18 states have internal predecessors, (111), 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) [2025-03-04 15:20:24,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:24,289 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1] [2025-03-04 15:20:24,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 15:20:24,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:20:24,493 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2025-03-04 15:20:24,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:24,494 INFO L85 PathProgramCache]: Analyzing trace with hash -309160144, now seen corresponding path program 2 times [2025-03-04 15:20:24,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:24,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289520728] [2025-03-04 15:20:24,494 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:20:24,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:24,525 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-04 15:20:24,547 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 15:20:24,548 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:20:24,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-04 15:20:24,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:24,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289520728] [2025-03-04 15:20:24,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289520728] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:20:24,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525620552] [2025-03-04 15:20:24,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:20:24,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:20:24,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:20:24,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:20:24,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 15:20:24,766 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-04 15:20:24,842 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 15:20:24,842 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:20:24,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:24,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 15:20:24,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:20:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 15:20:25,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:20:25,240 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 15:20:25,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525620552] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:20:25,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:20:25,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 16, 16] total 25 [2025-03-04 15:20:25,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547414087] [2025-03-04 15:20:25,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:20:25,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-04 15:20:25,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:25,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-04 15:20:25,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2025-03-04 15:20:25,288 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 25 [2025-03-04 15:20:25,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 175 flow. Second operand has 25 states, 25 states have (on average 4.32) internal successors, (108), 25 states have internal predecessors, (108), 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) [2025-03-04 15:20:25,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:25,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 25 [2025-03-04 15:20:25,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:25,670 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2025-03-04 15:20:25,670 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2025-03-04 15:20:25,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 40 events. 2/40 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 2 event pairs, 0 based on Foata normal form. 4/43 useless extension candidates. Maximal degree in co-relation 132. Up to 11 conditions per place. [2025-03-04 15:20:25,671 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 2 selfloop transitions, 26 changer transitions 0/30 dead transitions. [2025-03-04 15:20:25,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 30 transitions, 281 flow [2025-03-04 15:20:25,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-04 15:20:25,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-04 15:20:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 107 transitions. [2025-03-04 15:20:25,673 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.1712 [2025-03-04 15:20:25,673 INFO L175 Difference]: Start difference. First operand has 40 places, 25 transitions, 175 flow. Second operand 25 states and 107 transitions. [2025-03-04 15:20:25,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 30 transitions, 281 flow [2025-03-04 15:20:25,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 30 transitions, 271 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-04 15:20:25,675 INFO L231 Difference]: Finished difference. Result has 59 places, 30 transitions, 269 flow [2025-03-04 15:20:25,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=269, PETRI_PLACES=59, PETRI_TRANSITIONS=30} [2025-03-04 15:20:25,675 INFO L279 CegarLoopForPetriNet]: 11 programPoint places, 48 predicate places. [2025-03-04 15:20:25,675 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 30 transitions, 269 flow [2025-03-04 15:20:25,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.32) internal successors, (108), 25 states have internal predecessors, (108), 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) [2025-03-04 15:20:25,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:20:25,675 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1] [2025-03-04 15:20:25,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 15:20:25,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:20:25,880 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2025-03-04 15:20:25,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:20:25,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1939037284, now seen corresponding path program 1 times [2025-03-04 15:20:25,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:20:25,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648910098] [2025-03-04 15:20:25,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:20:25,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:20:25,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 15:20:25,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 15:20:25,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:20:25,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:20:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2025-03-04 15:20:25,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:20:25,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648910098] [2025-03-04 15:20:25,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648910098] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:20:25,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:20:25,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:20:25,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790928496] [2025-03-04 15:20:25,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:20:25,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:20:25,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:20:25,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:20:25,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:20:25,992 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2025-03-04 15:20:25,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 30 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2025-03-04 15:20:25,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:20:25,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2025-03-04 15:20:25,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:20:26,022 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2025-03-04 15:20:26,022 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2025-03-04 15:20:26,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 39 events. 2/39 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 2 event pairs, 0 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 150. Up to 26 conditions per place. [2025-03-04 15:20:26,023 INFO L140 encePairwiseOnDemand]: 22/25 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2025-03-04 15:20:26,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 29 transitions, 319 flow [2025-03-04 15:20:26,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:20:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:20:26,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2025-03-04 15:20:26,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29333333333333333 [2025-03-04 15:20:26,023 INFO L175 Difference]: Start difference. First operand has 59 places, 30 transitions, 269 flow. Second operand 3 states and 22 transitions. [2025-03-04 15:20:26,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 29 transitions, 319 flow [2025-03-04 15:20:26,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 239 flow, removed 9 selfloop flow, removed 22 redundant places. [2025-03-04 15:20:26,025 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2025-03-04 15:20:26,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2025-03-04 15:20:26,025 INFO L279 CegarLoopForPetriNet]: 11 programPoint places, 27 predicate places. [2025-03-04 15:20:26,025 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2025-03-04 15:20:26,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2025-03-04 15:20:26,029 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 5 remaining) [2025-03-04 15:20:26,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2025-03-04 15:20:26,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2025-03-04 15:20:26,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2025-03-04 15:20:26,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-03-04 15:20:26,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 15:20:26,030 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2025-03-04 15:20:26,034 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 15:20:26,034 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 15:20:26,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 03:20:26 BasicIcfg [2025-03-04 15:20:26,038 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 15:20:26,039 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 15:20:26,039 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 15:20:26,039 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 15:20:26,039 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:20:21" (3/4) ... [2025-03-04 15:20:26,041 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 15:20:26,043 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-03-04 15:20:26,047 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 83 nodes and edges [2025-03-04 15:20:26,048 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2025-03-04 15:20:26,049 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2025-03-04 15:20:26,049 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-03-04 15:20:26,049 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-04 15:20:26,049 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-04 15:20:26,109 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 15:20:26,109 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 15:20:26,109 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 15:20:26,110 INFO L158 Benchmark]: Toolchain (without parser) took 5899.94ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 111.4MB in the beginning and 129.8MB in the end (delta: -18.4MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2025-03-04 15:20:26,110 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:20:26,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.25ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 70.8MB in the end (delta: 40.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-04 15:20:26,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.92ms. Allocated memory is still 142.6MB. Free memory was 70.8MB in the beginning and 67.9MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:20:26,113 INFO L158 Benchmark]: Boogie Preprocessor took 45.65ms. Allocated memory is still 142.6MB. Free memory was 67.9MB in the beginning and 64.9MB in the end (delta: 3.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:20:26,113 INFO L158 Benchmark]: IcfgBuilder took 713.42ms. Allocated memory is still 142.6MB. Free memory was 64.9MB in the beginning and 98.9MB in the end (delta: -34.0MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. [2025-03-04 15:20:26,113 INFO L158 Benchmark]: TraceAbstraction took 4527.15ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 98.9MB in the beginning and 136.8MB in the end (delta: -37.9MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2025-03-04 15:20:26,113 INFO L158 Benchmark]: Witness Printer took 70.84ms. Allocated memory is still 192.9MB. Free memory was 136.8MB in the beginning and 129.8MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:20:26,114 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 496.25ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 70.8MB in the end (delta: 40.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.92ms. Allocated memory is still 142.6MB. Free memory was 70.8MB in the beginning and 67.9MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.65ms. Allocated memory is still 142.6MB. Free memory was 67.9MB in the beginning and 64.9MB in the end (delta: 3.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 713.42ms. Allocated memory is still 142.6MB. Free memory was 64.9MB in the beginning and 98.9MB in the end (delta: -34.0MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. * TraceAbstraction took 4527.15ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 98.9MB in the beginning and 136.8MB in the end (delta: -37.9MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Witness Printer took 70.84ms. Allocated memory is still 192.9MB. Free memory was 136.8MB in the beginning and 129.8MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1256]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1256]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1262]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1262]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 31 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.4s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 158 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 132 mSDsluCounter, 202 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 198 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 428 IncrementalHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 4 mSDtfsCounter, 428 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 61 SyntacticMatches, 11 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=269occurred in iteration=7, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 175 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 211 ConstructedInterpolants, 0 QuantifiedInterpolants, 429 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1284 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 245/428 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 15:20:26,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE