./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id2_b2_o3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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/recursive-simple/id2_b2_o3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 27149dc6702b40ed508ca85da6c2aa8aa33688ab27cc92cc19b394120cb70fd9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 02:38:22,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 02:38:22,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 02:38:23,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 02:38:23,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 02:38:23,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 02:38:23,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 02:38:23,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 02:38:23,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 02:38:23,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 02:38:23,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 02:38:23,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 02:38:23,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 02:38:23,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 02:38:23,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 02:38:23,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 02:38:23,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 02:38:23,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 02:38:23,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 02:38:23,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 02:38:23,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 02:38:23,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 02:38:23,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 02:38:23,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 02:38:23,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 02:38:23,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 02:38:23,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 02:38:23,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 02:38:23,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 02:38:23,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 02:38:23,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 02:38:23,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 02:38:23,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 02:38:23,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 02:38:23,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 02:38:23,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 02:38:23,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 02:38:23,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 02:38:23,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 02:38:23,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 02:38:23,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 02:38:23,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 02:38:23,048 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 02:38:23,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 02:38:23,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 02:38:23,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 02:38:23,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 02:38:23,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 02:38:23,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 02:38:23,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 02:38:23,050 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 02:38:23,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 02:38:23,050 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 02:38:23,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 02:38:23,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 02:38:23,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 02:38:23,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 02:38:23,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 02:38:23,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 02:38:23,051 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 02:38:23,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 02:38:23,052 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 02:38:23,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 02:38:23,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 02:38:23,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 02:38:23,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 02:38:23,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 02:38:23,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 02:38:23,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 02:38:23,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 02:38:23,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 02:38:23,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 02:38:23,054 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 02:38:23,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 02:38:23,054 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 02:38:23,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 02:38:23,054 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 02:38:23,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27149dc6702b40ed508ca85da6c2aa8aa33688ab27cc92cc19b394120cb70fd9 [2023-02-17 02:38:23,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 02:38:23,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 02:38:23,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 02:38:23,252 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 02:38:23,252 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 02:38:23,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id2_b2_o3.c [2023-02-17 02:38:24,316 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 02:38:24,448 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 02:38:24,448 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id2_b2_o3.c [2023-02-17 02:38:24,455 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e076ee2d/534b98b798a146408592584352219337/FLAG6ce5165e4 [2023-02-17 02:38:24,467 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e076ee2d/534b98b798a146408592584352219337 [2023-02-17 02:38:24,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 02:38:24,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 02:38:24,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 02:38:24,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 02:38:24,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 02:38:24,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:38:24" (1/1) ... [2023-02-17 02:38:24,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@410c8872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:38:24, skipping insertion in model container [2023-02-17 02:38:24,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:38:24" (1/1) ... [2023-02-17 02:38:24,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 02:38:24,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 02:38:24,627 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id2_b2_o3.c[771,784] [2023-02-17 02:38:24,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 02:38:24,641 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 02:38:24,656 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id2_b2_o3.c[771,784] [2023-02-17 02:38:24,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 02:38:24,679 INFO L208 MainTranslator]: Completed translation [2023-02-17 02:38:24,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:38:24 WrapperNode [2023-02-17 02:38:24,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 02:38:24,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 02:38:24,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 02:38:24,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 02:38:24,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:38:24" (1/1) ... [2023-02-17 02:38:24,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:38:24" (1/1) ... [2023-02-17 02:38:24,701 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-02-17 02:38:24,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 02:38:24,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 02:38:24,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 02:38:24,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 02:38:24,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:38:24" (1/1) ... [2023-02-17 02:38:24,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:38:24" (1/1) ... [2023-02-17 02:38:24,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:38:24" (1/1) ... [2023-02-17 02:38:24,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:38:24" (1/1) ... [2023-02-17 02:38:24,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:38:24" (1/1) ... [2023-02-17 02:38:24,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:38:24" (1/1) ... [2023-02-17 02:38:24,718 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:38:24" (1/1) ... [2023-02-17 02:38:24,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:38:24" (1/1) ... [2023-02-17 02:38:24,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 02:38:24,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 02:38:24,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 02:38:24,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 02:38:24,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:38:24" (1/1) ... [2023-02-17 02:38:24,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 02:38:24,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:38:24,747 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 02:38:24,765 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 02:38:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 02:38:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 02:38:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2023-02-17 02:38:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2023-02-17 02:38:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 02:38:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 02:38:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-02-17 02:38:24,777 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-02-17 02:38:24,820 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 02:38:24,822 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 02:38:24,930 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 02:38:24,934 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 02:38:24,934 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-17 02:38:24,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:38:24 BoogieIcfgContainer [2023-02-17 02:38:24,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 02:38:24,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 02:38:24,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 02:38:24,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 02:38:24,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 02:38:24" (1/3) ... [2023-02-17 02:38:24,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a890050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:38:24, skipping insertion in model container [2023-02-17 02:38:24,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:38:24" (2/3) ... [2023-02-17 02:38:24,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a890050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:38:24, skipping insertion in model container [2023-02-17 02:38:24,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:38:24" (3/3) ... [2023-02-17 02:38:24,941 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_b2_o3.c [2023-02-17 02:38:24,953 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 02:38:24,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 02:38:24,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 02:38:24,987 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;@7219dd63, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 02:38:24,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 02:38:24,990 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 02:38:24,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 02:38:24,994 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:38:24,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:38:24,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:38:24,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:38:24,999 INFO L85 PathProgramCache]: Analyzing trace with hash 794002500, now seen corresponding path program 1 times [2023-02-17 02:38:25,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:38:25,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308663001] [2023-02-17 02:38:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:38:25,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:38:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:25,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:38:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:25,221 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 02:38:25,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:38:25,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308663001] [2023-02-17 02:38:25,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308663001] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:38:25,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:38:25,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 02:38:25,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811249766] [2023-02-17 02:38:25,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:38:25,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 02:38:25,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:38:25,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 02:38:25,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:38:25,256 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 02:38:25,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:38:25,292 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2023-02-17 02:38:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 02:38:25,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-02-17 02:38:25,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:38:25,301 INFO L225 Difference]: With dead ends: 36 [2023-02-17 02:38:25,301 INFO L226 Difference]: Without dead ends: 23 [2023-02-17 02:38:25,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:38:25,306 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:38:25,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 96 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:38:25,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-17 02:38:25,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-17 02:38:25,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-17 02:38:25,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-17 02:38:25,381 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2023-02-17 02:38:25,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:38:25,381 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-17 02:38:25,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 02:38:25,382 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-17 02:38:25,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 02:38:25,383 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:38:25,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:38:25,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 02:38:25,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:38:25,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:38:25,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1040166181, now seen corresponding path program 1 times [2023-02-17 02:38:25,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:38:25,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821365518] [2023-02-17 02:38:25,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:38:25,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:38:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:38:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:25,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:38:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:25,566 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 02:38:25,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:38:25,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821365518] [2023-02-17 02:38:25,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821365518] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:38:25,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:38:25,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 02:38:25,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238448071] [2023-02-17 02:38:25,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:38:25,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 02:38:25,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:38:25,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 02:38:25,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:38:25,571 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 02:38:25,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:38:25,605 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2023-02-17 02:38:25,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 02:38:25,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-02-17 02:38:25,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:38:25,606 INFO L225 Difference]: With dead ends: 41 [2023-02-17 02:38:25,606 INFO L226 Difference]: Without dead ends: 29 [2023-02-17 02:38:25,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:38:25,608 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:38:25,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 94 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:38:25,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-17 02:38:25,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-02-17 02:38:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-17 02:38:25,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-02-17 02:38:25,619 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 17 [2023-02-17 02:38:25,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:38:25,620 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-02-17 02:38:25,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 02:38:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-02-17 02:38:25,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 02:38:25,621 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:38:25,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:38:25,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 02:38:25,621 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:38:25,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:38:25,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1068795332, now seen corresponding path program 1 times [2023-02-17 02:38:25,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:38:25,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874169093] [2023-02-17 02:38:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:38:25,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:38:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:25,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:38:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:25,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:38:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:25,755 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 02:38:25,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:38:25,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874169093] [2023-02-17 02:38:25,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874169093] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:38:25,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:38:25,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 02:38:25,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116278357] [2023-02-17 02:38:25,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:38:25,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 02:38:25,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:38:25,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 02:38:25,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-17 02:38:25,763 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 02:38:25,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:38:25,825 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-02-17 02:38:25,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 02:38:25,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-02-17 02:38:25,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:38:25,826 INFO L225 Difference]: With dead ends: 33 [2023-02-17 02:38:25,827 INFO L226 Difference]: Without dead ends: 29 [2023-02-17 02:38:25,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-17 02:38:25,830 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:38:25,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 154 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:38:25,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-17 02:38:25,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-02-17 02:38:25,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-17 02:38:25,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-02-17 02:38:25,840 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 17 [2023-02-17 02:38:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:38:25,841 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-02-17 02:38:25,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 02:38:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-02-17 02:38:25,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 02:38:25,842 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:38:25,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:38:25,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 02:38:25,843 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:38:25,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:38:25,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1632008158, now seen corresponding path program 1 times [2023-02-17 02:38:25,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:38:25,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148479674] [2023-02-17 02:38:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:38:25,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:38:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:25,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:38:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:25,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:38:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:26,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:38:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 02:38:26,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:38:26,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148479674] [2023-02-17 02:38:26,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148479674] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:38:26,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:38:26,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 02:38:26,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903806449] [2023-02-17 02:38:26,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:38:26,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 02:38:26,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:38:26,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 02:38:26,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:38:26,047 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 02:38:26,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:38:26,072 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2023-02-17 02:38:26,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 02:38:26,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-02-17 02:38:26,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:38:26,074 INFO L225 Difference]: With dead ends: 45 [2023-02-17 02:38:26,075 INFO L226 Difference]: Without dead ends: 33 [2023-02-17 02:38:26,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:38:26,081 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:38:26,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 94 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:38:26,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-17 02:38:26,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2023-02-17 02:38:26,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 02:38:26,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2023-02-17 02:38:26,093 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 24 [2023-02-17 02:38:26,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:38:26,093 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2023-02-17 02:38:26,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 02:38:26,094 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2023-02-17 02:38:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 02:38:26,095 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:38:26,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:38:26,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 02:38:26,097 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:38:26,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:38:26,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1435494653, now seen corresponding path program 1 times [2023-02-17 02:38:26,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:38:26,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27248010] [2023-02-17 02:38:26,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:38:26,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:38:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:26,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:38:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:38:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:38:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 02:38:26,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:38:26,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27248010] [2023-02-17 02:38:26,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27248010] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:38:26,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:38:26,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 02:38:26,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037442777] [2023-02-17 02:38:26,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:38:26,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 02:38:26,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:38:26,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 02:38:26,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-17 02:38:26,310 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 02:38:26,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:38:26,350 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2023-02-17 02:38:26,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 02:38:26,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-02-17 02:38:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:38:26,353 INFO L225 Difference]: With dead ends: 49 [2023-02-17 02:38:26,353 INFO L226 Difference]: Without dead ends: 37 [2023-02-17 02:38:26,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-17 02:38:26,356 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:38:26,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 172 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:38:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-17 02:38:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2023-02-17 02:38:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-17 02:38:26,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2023-02-17 02:38:26,366 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 24 [2023-02-17 02:38:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:38:26,366 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2023-02-17 02:38:26,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 02:38:26,367 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2023-02-17 02:38:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 02:38:26,367 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:38:26,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:38:26,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 02:38:26,368 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:38:26,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:38:26,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1464123804, now seen corresponding path program 1 times [2023-02-17 02:38:26,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:38:26,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951992322] [2023-02-17 02:38:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:38:26,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:38:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:26,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:38:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:26,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:38:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:38:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 02:38:26,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:38:26,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951992322] [2023-02-17 02:38:26,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951992322] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:38:26,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489568974] [2023-02-17 02:38:26,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:38:26,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:38:26,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:38:26,587 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) [2023-02-17 02:38:26,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 02:38:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:38:26,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-17 02:38:26,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:38:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 02:38:26,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:38:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 02:38:26,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489568974] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-17 02:38:26,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-17 02:38:26,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 11] total 15 [2023-02-17 02:38:26,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069285232] [2023-02-17 02:38:26,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:38:26,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 02:38:26,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:38:26,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 02:38:26,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-02-17 02:38:26,815 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 02:38:26,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:38:26,827 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2023-02-17 02:38:26,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 02:38:26,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-02-17 02:38:26,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:38:26,828 INFO L225 Difference]: With dead ends: 35 [2023-02-17 02:38:26,828 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 02:38:26,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-02-17 02:38:26,829 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:38:26,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:38:26,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 02:38:26,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 02:38:26,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 02:38:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 02:38:26,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2023-02-17 02:38:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:38:26,831 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 02:38:26,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 02:38:26,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 02:38:26,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 02:38:26,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 02:38:26,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 02:38:27,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-02-17 02:38:27,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 02:38:27,045 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2023-02-17 02:38:27,045 INFO L899 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2023-02-17 02:38:27,045 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 16 21) the Hoare annotation is: true [2023-02-17 02:38:27,045 INFO L899 garLoopResultBuilder]: For program point id2EXIT(lines 16 21) no Hoare annotation was computed. [2023-02-17 02:38:27,046 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-02-17 02:38:27,046 INFO L899 garLoopResultBuilder]: For program point id2FINAL(lines 16 21) no Hoare annotation was computed. [2023-02-17 02:38:27,046 INFO L902 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: true [2023-02-17 02:38:27,046 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 02:38:27,046 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 02:38:27,046 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 02:38:27,046 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2023-02-17 02:38:27,046 INFO L899 garLoopResultBuilder]: For program point L26(lines 26 28) no Hoare annotation was computed. [2023-02-17 02:38:27,047 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-02-17 02:38:27,047 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-02-17 02:38:27,047 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2023-02-17 02:38:27,047 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 29) no Hoare annotation was computed. [2023-02-17 02:38:27,047 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 02:38:27,047 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 9 14) no Hoare annotation was computed. [2023-02-17 02:38:27,047 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-17 02:38:27,047 INFO L902 garLoopResultBuilder]: At program point L11(line 11) the Hoare annotation is: true [2023-02-17 02:38:27,048 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 9 14) no Hoare annotation was computed. [2023-02-17 02:38:27,048 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2023-02-17 02:38:27,048 INFO L899 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2023-02-17 02:38:27,048 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 14) the Hoare annotation is: true [2023-02-17 02:38:27,050 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-02-17 02:38:27,052 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 02:38:27,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 02:38:27 BoogieIcfgContainer [2023-02-17 02:38:27,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 02:38:27,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 02:38:27,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 02:38:27,055 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 02:38:27,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:38:24" (3/4) ... [2023-02-17 02:38:27,058 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 02:38:27,063 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2023-02-17 02:38:27,063 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2023-02-17 02:38:27,066 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-02-17 02:38:27,066 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 02:38:27,066 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 02:38:27,066 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 02:38:27,086 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 02:38:27,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 02:38:27,087 INFO L158 Benchmark]: Toolchain (without parser) took 2616.85ms. Allocated memory was 113.2MB in the beginning and 161.5MB in the end (delta: 48.2MB). Free memory was 49.4MB in the beginning and 111.1MB in the end (delta: -61.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 02:38:27,087 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 02:38:27,088 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.01ms. Allocated memory is still 113.2MB. Free memory was 49.2MB in the beginning and 84.5MB in the end (delta: -35.3MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2023-02-17 02:38:27,088 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.75ms. Allocated memory is still 113.2MB. Free memory was 84.5MB in the beginning and 83.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 02:38:27,088 INFO L158 Benchmark]: Boogie Preprocessor took 20.97ms. Allocated memory is still 113.2MB. Free memory was 83.2MB in the beginning and 82.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 02:38:27,088 INFO L158 Benchmark]: RCFGBuilder took 211.61ms. Allocated memory is still 113.2MB. Free memory was 82.1MB in the beginning and 72.7MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 02:38:27,089 INFO L158 Benchmark]: TraceAbstraction took 2117.72ms. Allocated memory was 113.2MB in the beginning and 161.5MB in the end (delta: 48.2MB). Free memory was 72.0MB in the beginning and 113.2MB in the end (delta: -41.2MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2023-02-17 02:38:27,089 INFO L158 Benchmark]: Witness Printer took 31.63ms. Allocated memory is still 161.5MB. Free memory was 113.2MB in the beginning and 111.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 02:38:27,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.01ms. Allocated memory is still 113.2MB. Free memory was 49.2MB in the beginning and 84.5MB in the end (delta: -35.3MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.75ms. Allocated memory is still 113.2MB. Free memory was 84.5MB in the beginning and 83.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.97ms. Allocated memory is still 113.2MB. Free memory was 83.2MB in the beginning and 82.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 211.61ms. Allocated memory is still 113.2MB. Free memory was 82.1MB in the beginning and 72.7MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2117.72ms. Allocated memory was 113.2MB in the beginning and 161.5MB in the end (delta: 48.2MB). Free memory was 72.0MB in the beginning and 113.2MB in the end (delta: -41.2MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Witness Printer took 31.63ms. Allocated memory is still 161.5MB. Free memory was 113.2MB in the beginning and 111.1MB 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 - PositiveResult [Line: 27]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 689 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 540 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 115 IncrementalHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 149 mSDtfsCounter, 115 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=5, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 5 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 625 SizeOfPredicates, 3 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 16/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-02-17 02:38:27,119 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 Result: TRUE