./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/afterrec_2calls-2.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 b329d37fd8bf911c1223006468d56bb06a44739627ad380de3f708faf818709f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 18:14:09,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 18:14:09,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 18:14:09,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 18:14:09,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 18:14:09,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 18:14:09,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 18:14:09,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 18:14:09,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 18:14:09,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 18:14:09,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 18:14:09,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 18:14:09,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 18:14:09,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 18:14:09,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 18:14:09,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 18:14:09,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 18:14:09,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 18:14:09,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 18:14:09,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 18:14:09,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 18:14:09,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 18:14:09,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 18:14:09,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 18:14:09,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 18:14:09,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 18:14:09,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 18:14:09,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 18:14:09,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 18:14:09,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 18:14:09,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 18:14:09,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 18:14:09,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 18:14:09,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 18:14:09,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 18:14:09,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 18:14:09,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 18:14:09,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 18:14:09,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 18:14:09,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 18:14:09,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 18:14:09,763 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 18:14:09,787 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 18:14:09,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 18:14:09,788 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 18:14:09,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 18:14:09,788 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 18:14:09,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 18:14:09,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 18:14:09,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 18:14:09,789 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 18:14:09,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 18:14:09,790 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 18:14:09,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 18:14:09,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 18:14:09,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 18:14:09,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 18:14:09,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 18:14:09,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 18:14:09,791 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 18:14:09,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 18:14:09,791 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 18:14:09,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 18:14:09,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 18:14:09,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 18:14:09,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 18:14:09,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 18:14:09,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 18:14:09,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 18:14:09,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 18:14:09,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 18:14:09,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 18:14:09,794 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 18:14:09,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 18:14:09,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 18:14:09,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b329d37fd8bf911c1223006468d56bb06a44739627ad380de3f708faf818709f [2022-02-20 18:14:09,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 18:14:10,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 18:14:10,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 18:14:10,014 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 18:14:10,024 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 18:14:10,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2022-02-20 18:14:10,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd28b7a92/59d056104c0c48e9b85aa94416c28e71/FLAG854fe269a [2022-02-20 18:14:10,466 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 18:14:10,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2022-02-20 18:14:10,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd28b7a92/59d056104c0c48e9b85aa94416c28e71/FLAG854fe269a [2022-02-20 18:14:10,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd28b7a92/59d056104c0c48e9b85aa94416c28e71 [2022-02-20 18:14:10,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 18:14:10,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 18:14:10,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 18:14:10,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 18:14:10,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 18:14:10,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 06:14:10" (1/1) ... [2022-02-20 18:14:10,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27369bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:14:10, skipping insertion in model container [2022-02-20 18:14:10,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 06:14:10" (1/1) ... [2022-02-20 18:14:10,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 18:14:10,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 18:14:10,634 WARN L230 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/afterrec_2calls-2.c[354,367] [2022-02-20 18:14:10,638 WARN L230 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/afterrec_2calls-2.c[442,455] [2022-02-20 18:14:10,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 18:14:10,646 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 18:14:10,654 WARN L230 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/afterrec_2calls-2.c[354,367] [2022-02-20 18:14:10,656 WARN L230 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/afterrec_2calls-2.c[442,455] [2022-02-20 18:14:10,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 18:14:10,666 INFO L208 MainTranslator]: Completed translation [2022-02-20 18:14:10,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:14:10 WrapperNode [2022-02-20 18:14:10,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 18:14:10,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 18:14:10,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 18:14:10,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 18:14:10,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:14:10" (1/1) ... [2022-02-20 18:14:10,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:14:10" (1/1) ... [2022-02-20 18:14:10,688 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2022-02-20 18:14:10,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 18:14:10,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 18:14:10,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 18:14:10,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 18:14:10,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:14:10" (1/1) ... [2022-02-20 18:14:10,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:14:10" (1/1) ... [2022-02-20 18:14:10,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:14:10" (1/1) ... [2022-02-20 18:14:10,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:14:10" (1/1) ... [2022-02-20 18:14:10,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:14:10" (1/1) ... [2022-02-20 18:14:10,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:14:10" (1/1) ... [2022-02-20 18:14:10,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:14:10" (1/1) ... [2022-02-20 18:14:10,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 18:14:10,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 18:14:10,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 18:14:10,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 18:14:10,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:14:10" (1/1) ... [2022-02-20 18:14:10,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 18:14:10,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 18:14:10,738 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) [2022-02-20 18:14:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 18:14:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-02-20 18:14:10,765 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-02-20 18:14:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 18:14:10,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 18:14:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 18:14:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2022-02-20 18:14:10,766 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2022-02-20 18:14:10,760 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 [2022-02-20 18:14:10,808 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 18:14:10,809 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 18:14:10,922 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 18:14:10,929 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 18:14:10,931 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 18:14:10,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:14:10 BoogieIcfgContainer [2022-02-20 18:14:10,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 18:14:10,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 18:14:10,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 18:14:10,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 18:14:10,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 06:14:10" (1/3) ... [2022-02-20 18:14:10,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21436b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 06:14:10, skipping insertion in model container [2022-02-20 18:14:10,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:14:10" (2/3) ... [2022-02-20 18:14:10,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21436b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 06:14:10, skipping insertion in model container [2022-02-20 18:14:10,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:14:10" (3/3) ... [2022-02-20 18:14:10,946 INFO L111 eAbstractionObserver]: Analyzing ICFG afterrec_2calls-2.c [2022-02-20 18:14:10,950 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 18:14:10,950 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 18:14:10,997 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 18:14:11,004 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 18:14:11,005 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 18:14:11,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 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) [2022-02-20 18:14:11,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-20 18:14:11,040 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 18:14:11,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 18:14:11,041 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONERROR_FUNCTION === [fErr0ASSERT_VIOLATIONERROR_FUNCTION, f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 18:14:11,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 18:14:11,050 INFO L85 PathProgramCache]: Analyzing trace with hash 444027717, now seen corresponding path program 1 times [2022-02-20 18:14:11,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 18:14:11,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959806046] [2022-02-20 18:14:11,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 18:14:11,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 18:14:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 18:14:11,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-20 18:14:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 18:14:11,252 INFO L290 TraceCheckUtils]: 0: Hoare triple {23#true} ~n := #in~n; {23#true} is VALID [2022-02-20 18:14:11,253 INFO L290 TraceCheckUtils]: 1: Hoare triple {23#true} assume ~n < 3; {23#true} is VALID [2022-02-20 18:14:11,253 INFO L290 TraceCheckUtils]: 2: Hoare triple {23#true} assume true; {23#true} is VALID [2022-02-20 18:14:11,253 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {23#true} {24#false} #28#return; {24#false} is VALID [2022-02-20 18:14:11,254 INFO L290 TraceCheckUtils]: 0: Hoare triple {23#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(20, 2);call #Ultimate.allocInit(12, 3); {23#true} is VALID [2022-02-20 18:14:11,255 INFO L290 TraceCheckUtils]: 1: Hoare triple {23#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; {23#true} is VALID [2022-02-20 18:14:11,256 INFO L272 TraceCheckUtils]: 2: Hoare triple {23#true} call f(2); {25#(= |f_#in~n| 2)} is VALID [2022-02-20 18:14:11,257 INFO L290 TraceCheckUtils]: 3: Hoare triple {25#(= |f_#in~n| 2)} ~n := #in~n; {26#(= (+ (- 2) f_~n) 0)} is VALID [2022-02-20 18:14:11,258 INFO L290 TraceCheckUtils]: 4: Hoare triple {26#(= (+ (- 2) f_~n) 0)} assume !(~n < 3);#t~post6 := ~n;~n := #t~post6 - 1;havoc #t~post6; {24#false} is VALID [2022-02-20 18:14:11,258 INFO L272 TraceCheckUtils]: 5: Hoare triple {24#false} call f2(~n); {23#true} is VALID [2022-02-20 18:14:11,258 INFO L290 TraceCheckUtils]: 6: Hoare triple {23#true} ~n := #in~n; {23#true} is VALID [2022-02-20 18:14:11,258 INFO L290 TraceCheckUtils]: 7: Hoare triple {23#true} assume ~n < 3; {23#true} is VALID [2022-02-20 18:14:11,258 INFO L290 TraceCheckUtils]: 8: Hoare triple {23#true} assume true; {23#true} is VALID [2022-02-20 18:14:11,259 INFO L284 TraceCheckUtils]: 9: Hoare quadruple {23#true} {24#false} #28#return; {24#false} is VALID [2022-02-20 18:14:11,259 INFO L290 TraceCheckUtils]: 10: Hoare triple {24#false} assume !false; {24#false} is VALID [2022-02-20 18:14:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 18:14:11,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 18:14:11,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959806046] [2022-02-20 18:14:11,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959806046] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 18:14:11,261 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 18:14:11,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-20 18:14:11,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641555491] [2022-02-20 18:14:11,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 18:14:11,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-02-20 18:14:11,268 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 18:14:11,270 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 18:14:11,284 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 18:14:11,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-20 18:14:11,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 18:14:11,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-20 18:14:11,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-20 18:14:11,314 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 18:14:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 18:14:11,370 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-02-20 18:14:11,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-20 18:14:11,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-02-20 18:14:11,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 18:14:11,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 18:14:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2022-02-20 18:14:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 18:14:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2022-02-20 18:14:11,381 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 29 transitions. [2022-02-20 18:14:11,417 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 18:14:11,421 INFO L225 Difference]: With dead ends: 27 [2022-02-20 18:14:11,421 INFO L226 Difference]: Without dead ends: 0 [2022-02-20 18:14:11,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-20 18:14:11,427 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 18:14:11,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 15 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 18:14:11,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-20 18:14:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-20 18:14:11,443 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 18:14:11,443 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second 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) [2022-02-20 18:14:11,443 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second 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) [2022-02-20 18:14:11,444 INFO L87 Difference]: Start difference. First operand 0 states. Second 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) [2022-02-20 18:14:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 18:14:11,444 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-02-20 18:14:11,444 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-20 18:14:11,444 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 18:14:11,445 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 18:14:11,445 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 0 states. [2022-02-20 18:14:11,445 INFO L87 Difference]: Start difference. First 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) Second operand 0 states. [2022-02-20 18:14:11,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 18:14:11,446 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-02-20 18:14:11,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-20 18:14:11,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 18:14:11,446 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 18:14:11,447 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 18:14:11,447 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 18:14:11,447 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) [2022-02-20 18:14:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-20 18:14:11,449 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-02-20 18:14:11,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 18:14:11,451 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-20 18:14:11,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 18:14:11,452 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-20 18:14:11,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 18:14:11,455 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-02-20 18:14:11,455 INFO L764 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-02-20 18:14:11,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 18:14:11,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-20 18:14:11,477 INFO L858 garLoopResultBuilder]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-02-20 18:14:11,478 INFO L854 garLoopResultBuilder]: At program point L11(line 11) the Hoare annotation is: (not (= |f_#in~n| 2)) [2022-02-20 18:14:11,478 INFO L858 garLoopResultBuilder]: For program point L11-1(lines 8 13) no Hoare annotation was computed. [2022-02-20 18:14:11,478 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-02-20 18:14:11,478 INFO L858 garLoopResultBuilder]: For program point fEXIT(lines 8 13) no Hoare annotation was computed. [2022-02-20 18:14:11,478 INFO L861 garLoopResultBuilder]: At program point fENTRY(lines 8 13) the Hoare annotation is: true [2022-02-20 18:14:11,478 INFO L858 garLoopResultBuilder]: For program point fFINAL(lines 8 13) no Hoare annotation was computed. [2022-02-20 18:14:11,478 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-20 18:14:11,478 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-02-20 18:14:11,478 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-02-20 18:14:11,478 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-20 18:14:11,478 INFO L861 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2022-02-20 18:14:11,479 INFO L858 garLoopResultBuilder]: For program point L23-1(lines 22 24) no Hoare annotation was computed. [2022-02-20 18:14:11,479 INFO L858 garLoopResultBuilder]: For program point L18-1(lines 15 20) no Hoare annotation was computed. [2022-02-20 18:14:11,479 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-02-20 18:14:11,479 INFO L858 garLoopResultBuilder]: For program point f2EXIT(lines 15 20) no Hoare annotation was computed. [2022-02-20 18:14:11,479 INFO L861 garLoopResultBuilder]: At program point f2ENTRY(lines 15 20) the Hoare annotation is: true [2022-02-20 18:14:11,479 INFO L858 garLoopResultBuilder]: For program point f2FINAL(lines 15 20) no Hoare annotation was computed. [2022-02-20 18:14:11,479 INFO L858 garLoopResultBuilder]: For program point f2Err0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-02-20 18:14:11,479 INFO L861 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: true [2022-02-20 18:14:11,482 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-20 18:14:11,483 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 18:14:11,485 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: fFINAL has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: L23-1 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: f2FINAL has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: L23-1 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: f2EXIT has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2022-02-20 18:14:11,486 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 18:14:11,487 INFO L163 areAnnotationChecker]: CFG has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-02-20 18:14:11,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 06:14:11 BoogieIcfgContainer [2022-02-20 18:14:11,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 18:14:11,488 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-20 18:14:11,488 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-20 18:14:11,489 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-20 18:14:11,489 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:14:10" (3/4) ... [2022-02-20 18:14:11,491 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-02-20 18:14:11,495 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2022-02-20 18:14:11,495 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2022-02-20 18:14:11,501 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-02-20 18:14:11,501 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-02-20 18:14:11,501 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-02-20 18:14:11,501 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-02-20 18:14:11,521 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-20 18:14:11,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-20 18:14:11,523 INFO L158 Benchmark]: Toolchain (without parser) took 1039.14ms. Allocated memory is still 127.9MB. Free memory was 98.2MB in the beginning and 54.7MB in the end (delta: 43.5MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. [2022-02-20 18:14:11,523 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory was 49.2MB in the beginning and 49.2MB in the end (delta: 67.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 18:14:11,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.26ms. Allocated memory is still 127.9MB. Free memory was 97.9MB in the beginning and 100.4MB in the end (delta: -2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 18:14:11,524 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.78ms. Allocated memory is still 127.9MB. Free memory was 100.4MB in the beginning and 99.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 18:14:11,524 INFO L158 Benchmark]: Boogie Preprocessor took 11.35ms. Allocated memory is still 127.9MB. Free memory was 99.2MB in the beginning and 98.3MB in the end (delta: 828.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 18:14:11,524 INFO L158 Benchmark]: RCFGBuilder took 231.62ms. Allocated memory is still 127.9MB. Free memory was 98.3MB in the beginning and 88.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-20 18:14:11,525 INFO L158 Benchmark]: TraceAbstraction took 547.86ms. Allocated memory is still 127.9MB. Free memory was 88.3MB in the beginning and 57.2MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-02-20 18:14:11,525 INFO L158 Benchmark]: Witness Printer took 34.06ms. Allocated memory is still 127.9MB. Free memory was 57.2MB in the beginning and 54.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 18:14:11,527 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory was 49.2MB in the beginning and 49.2MB in the end (delta: 67.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.26ms. Allocated memory is still 127.9MB. Free memory was 97.9MB in the beginning and 100.4MB in the end (delta: -2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.78ms. Allocated memory is still 127.9MB. Free memory was 100.4MB in the beginning and 99.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.35ms. Allocated memory is still 127.9MB. Free memory was 99.2MB in the beginning and 98.3MB in the end (delta: 828.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 231.62ms. Allocated memory is still 127.9MB. Free memory was 98.3MB in the beginning and 88.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 547.86ms. Allocated memory is still 127.9MB. Free memory was 88.3MB in the beginning and 57.2MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 34.06ms. Allocated memory is still 127.9MB. Free memory was 57.2MB in the beginning and 54.7MB in the end (delta: 2.5MB). 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 6 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 4, 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: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 8 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-20 18:14:11,569 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