./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/GulavaniGulwani-CAV2008-Fig1c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/GulavaniGulwani-CAV2008-Fig1c.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 64bit --witnessprinter.graph.data.programhash 593c99dcbcb1daed28b09dd5ce684086b69a062d8c194593c70495b641d1ed1c --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 09:24:12,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 09:24:12,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 09:24:12,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 09:24:12,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 09:24:12,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 09:24:12,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 09:24:12,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 09:24:12,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 09:24:12,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 09:24:12,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 09:24:12,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 09:24:12,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 09:24:12,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 09:24:12,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 09:24:12,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 09:24:12,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 09:24:12,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 09:24:12,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 09:24:12,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 09:24:12,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 09:24:12,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 09:24:12,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 09:24:12,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 09:24:12,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 09:24:12,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 09:24:12,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 09:24:12,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 09:24:12,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 09:24:12,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 09:24:12,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 09:24:12,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 09:24:12,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 09:24:12,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 09:24:12,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 09:24:12,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 09:24:12,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 09:24:12,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 09:24:12,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 09:24:12,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 09:24:12,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 09:24:12,707 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-17 09:24:12,736 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 09:24:12,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 09:24:12,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 09:24:12,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 09:24:12,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 09:24:12,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 09:24:12,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 09:24:12,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 09:24:12,739 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 09:24:12,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 09:24:12,739 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 09:24:12,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 09:24:12,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 09:24:12,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 09:24:12,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 09:24:12,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 09:24:12,740 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-17 09:24:12,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 09:24:12,745 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 09:24:12,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 09:24:12,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 09:24:12,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 09:24:12,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 09:24:12,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:24:12,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 09:24:12,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 09:24:12,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 09:24:12,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 09:24:12,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 09:24:12,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 09:24:12,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 09:24:12,748 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 09:24:12,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 09:24:12,749 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 09:24:12,749 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 593c99dcbcb1daed28b09dd5ce684086b69a062d8c194593c70495b641d1ed1c [2023-02-17 09:24:12,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 09:24:13,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 09:24:13,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 09:24:13,017 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 09:24:13,018 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 09:24:13,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/GulavaniGulwani-CAV2008-Fig1c.c [2023-02-17 09:24:14,220 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 09:24:14,411 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 09:24:14,412 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/GulavaniGulwani-CAV2008-Fig1c.c [2023-02-17 09:24:14,416 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ac919579/54a2f7b21d08424f89eea79bb4bb5e00/FLAG42043d228 [2023-02-17 09:24:14,430 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ac919579/54a2f7b21d08424f89eea79bb4bb5e00 [2023-02-17 09:24:14,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 09:24:14,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 09:24:14,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 09:24:14,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 09:24:14,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 09:24:14,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:24:14" (1/1) ... [2023-02-17 09:24:14,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553782dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:14, skipping insertion in model container [2023-02-17 09:24:14,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:24:14" (1/1) ... [2023-02-17 09:24:14,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 09:24:14,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 09:24:14,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:24:14,578 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 09:24:14,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:24:14,601 INFO L208 MainTranslator]: Completed translation [2023-02-17 09:24:14,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:14 WrapperNode [2023-02-17 09:24:14,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 09:24:14,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 09:24:14,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 09:24:14,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 09:24:14,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:14" (1/1) ... [2023-02-17 09:24:14,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:14" (1/1) ... [2023-02-17 09:24:14,626 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2023-02-17 09:24:14,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 09:24:14,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 09:24:14,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 09:24:14,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 09:24:14,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:14" (1/1) ... [2023-02-17 09:24:14,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:14" (1/1) ... [2023-02-17 09:24:14,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:14" (1/1) ... [2023-02-17 09:24:14,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:14" (1/1) ... [2023-02-17 09:24:14,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:14" (1/1) ... [2023-02-17 09:24:14,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:14" (1/1) ... [2023-02-17 09:24:14,638 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:14" (1/1) ... [2023-02-17 09:24:14,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:14" (1/1) ... [2023-02-17 09:24:14,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 09:24:14,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 09:24:14,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 09:24:14,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 09:24:14,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:14" (1/1) ... [2023-02-17 09:24:14,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:24:14,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:14,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 09:24:14,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 09:24:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 09:24:14,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 09:24:14,764 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 09:24:14,766 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 09:24:14,857 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 09:24:14,866 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 09:24:14,866 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 09:24:14,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:24:14 BoogieIcfgContainer [2023-02-17 09:24:14,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 09:24:14,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 09:24:14,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 09:24:14,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 09:24:14,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 09:24:14" (1/3) ... [2023-02-17 09:24:14,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f96f8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:24:14, skipping insertion in model container [2023-02-17 09:24:14,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:14" (2/3) ... [2023-02-17 09:24:14,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f96f8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:24:14, skipping insertion in model container [2023-02-17 09:24:14,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:24:14" (3/3) ... [2023-02-17 09:24:14,880 INFO L112 eAbstractionObserver]: Analyzing ICFG GulavaniGulwani-CAV2008-Fig1c.c [2023-02-17 09:24:14,901 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 09:24:14,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-17 09:24:14,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 09:24:14,967 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@37360d6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 09:24:14,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-17 09:24:14,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 states have internal predecessors, (16), 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) [2023-02-17 09:24:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-17 09:24:14,977 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:14,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-17 09:24:14,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:24:14,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:14,984 INFO L85 PathProgramCache]: Analyzing trace with hash 925796, now seen corresponding path program 1 times [2023-02-17 09:24:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:14,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821502472] [2023-02-17 09:24:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:14,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:15,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:15,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:15,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821502472] [2023-02-17 09:24:15,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821502472] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:15,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:15,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:24:15,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455149547] [2023-02-17 09:24:15,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:15,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:24:15,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:15,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:24:15,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:24:15,221 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 states have internal predecessors, (16), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-02-17 09:24:15,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:15,240 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2023-02-17 09:24:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:24:15,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2023-02-17 09:24:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:15,249 INFO L225 Difference]: With dead ends: 19 [2023-02-17 09:24:15,250 INFO L226 Difference]: Without dead ends: 10 [2023-02-17 09:24:15,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:24:15,257 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:15,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 12 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:15,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-02-17 09:24:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-02-17 09:24:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 9 states have internal predecessors, (10), 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) [2023-02-17 09:24:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-02-17 09:24:15,285 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 4 [2023-02-17 09:24:15,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:15,285 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-02-17 09:24:15,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-02-17 09:24:15,286 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-02-17 09:24:15,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-17 09:24:15,286 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:15,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-17 09:24:15,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 09:24:15,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-17 09:24:15,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:15,288 INFO L85 PathProgramCache]: Analyzing trace with hash 28699721, now seen corresponding path program 1 times [2023-02-17 09:24:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:15,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221078665] [2023-02-17 09:24:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:15,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:24:15,297 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:24:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:24:15,315 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:24:15,315 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-17 09:24:15,317 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-02-17 09:24:15,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-02-17 09:24:15,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-02-17 09:24:15,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-02-17 09:24:15,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 09:24:15,322 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-02-17 09:24:15,325 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 09:24:15,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 09:24:15 BoogieIcfgContainer [2023-02-17 09:24:15,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 09:24:15,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 09:24:15,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 09:24:15,340 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 09:24:15,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:24:14" (3/4) ... [2023-02-17 09:24:15,343 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-17 09:24:15,370 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 09:24:15,370 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 09:24:15,371 INFO L158 Benchmark]: Toolchain (without parser) took 934.34ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 84.9MB in the beginning and 120.0MB in the end (delta: -35.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:24:15,371 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 132.1MB. Free memory is still 71.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:24:15,374 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.53ms. Allocated memory is still 132.1MB. Free memory was 84.9MB in the beginning and 75.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 09:24:15,375 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.63ms. Allocated memory is still 132.1MB. Free memory was 75.7MB in the beginning and 74.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 09:24:15,377 INFO L158 Benchmark]: Boogie Preprocessor took 12.81ms. Allocated memory is still 132.1MB. Free memory was 74.5MB in the beginning and 73.5MB in the end (delta: 907.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:24:15,377 INFO L158 Benchmark]: RCFGBuilder took 227.52ms. Allocated memory is still 132.1MB. Free memory was 73.5MB in the beginning and 64.6MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 09:24:15,382 INFO L158 Benchmark]: TraceAbstraction took 468.96ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 64.0MB in the beginning and 122.1MB in the end (delta: -58.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:24:15,383 INFO L158 Benchmark]: Witness Printer took 30.13ms. Allocated memory is still 159.4MB. Free memory was 122.1MB in the beginning and 120.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 09:24:15,385 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 132.1MB. Free memory is still 71.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 162.53ms. Allocated memory is still 132.1MB. Free memory was 84.9MB in the beginning and 75.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.63ms. Allocated memory is still 132.1MB. Free memory was 75.7MB in the beginning and 74.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.81ms. Allocated memory is still 132.1MB. Free memory was 74.5MB in the beginning and 73.5MB in the end (delta: 907.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 227.52ms. Allocated memory is still 132.1MB. Free memory was 73.5MB in the beginning and 64.6MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 468.96ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 64.0MB in the beginning and 122.1MB in the end (delta: -58.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 30.13ms. Allocated memory is still 159.4MB. Free memory was 122.1MB in the beginning and 120.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x, i, n; [L15] x = __VERIFIER_nondet_int() [L16] i = __VERIFIER_nondet_int() [L17] n = __VERIFIER_nondet_int() [L18] COND TRUE x < n VAL [i=2147483647, n=0, x=-1] [L19] i + 1 VAL [i=2147483647, n=0, x=-1] - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 11 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2023-02-17 09:24:15,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)