./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/afterrec-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/afterrec-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 1c92d0a3779cdad7e145b29b6ae35aeb1a90bc327e2327b92a2158da4de5b6ea --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:40:58,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:40:58,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:40:58,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:40:58,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:40:58,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:40:58,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:40:58,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:40:58,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:40:58,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:40:58,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:40:58,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:40:58,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:40:58,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:40:58,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:40:58,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:40:58,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:40:58,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:40:58,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:40:58,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:40:58,502 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:40:58,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:40:58,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:40:58,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:40:58,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:40:58,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:40:58,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:40:58,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:40:58,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:40:58,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:40:58,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:40:58,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:40:58,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:40:58,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:40:58,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:40:58,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:40:58,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:40:58,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:40:58,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:40:58,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:40:58,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:40:58,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:40:58,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:40:58,546 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:40:58,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:40:58,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:40:58,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:40:58,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:40:58,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:40:58,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:40:58,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:40:58,549 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:40:58,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:40:58,550 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:40:58,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:40:58,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:40:58,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:40:58,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:40:58,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:40:58,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:40:58,551 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:40:58,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:40:58,551 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:40:58,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:40:58,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:40:58,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:40:58,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:40:58,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:40:58,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:40:58,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:40:58,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:40:58,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:40:58,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:40:58,553 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:40:58,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:40:58,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:40:58,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c92d0a3779cdad7e145b29b6ae35aeb1a90bc327e2327b92a2158da4de5b6ea [2022-07-22 17:40:58,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:40:58,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:40:58,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:40:58,796 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:40:58,797 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:40:58,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/afterrec-2.c [2022-07-22 17:40:58,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d96cb625/4f9ba574c38b4981999f8ac5b6bf453c/FLAG2d9eae2a7 [2022-07-22 17:40:59,219 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:40:59,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec-2.c [2022-07-22 17:40:59,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d96cb625/4f9ba574c38b4981999f8ac5b6bf453c/FLAG2d9eae2a7 [2022-07-22 17:40:59,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d96cb625/4f9ba574c38b4981999f8ac5b6bf453c [2022-07-22 17:40:59,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:40:59,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:40:59,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:40:59,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:40:59,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:40:59,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:40:59" (1/1) ... [2022-07-22 17:40:59,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a7bb9a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:40:59, skipping insertion in model container [2022-07-22 17:40:59,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:40:59" (1/1) ... [2022-07-22 17:40:59,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:40:59,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:40:59,410 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-2.c[318,331] [2022-07-22 17:40:59,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:40:59,421 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:40:59,431 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-2.c[318,331] [2022-07-22 17:40:59,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:40:59,441 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:40:59,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:40:59 WrapperNode [2022-07-22 17:40:59,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:40:59,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:40:59,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:40:59,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:40:59,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:40:59" (1/1) ... [2022-07-22 17:40:59,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:40:59" (1/1) ... [2022-07-22 17:40:59,463 INFO L137 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2022-07-22 17:40:59,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:40:59,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:40:59,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:40:59,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:40:59,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:40:59" (1/1) ... [2022-07-22 17:40:59,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:40:59" (1/1) ... [2022-07-22 17:40:59,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:40:59" (1/1) ... [2022-07-22 17:40:59,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:40:59" (1/1) ... [2022-07-22 17:40:59,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:40:59" (1/1) ... [2022-07-22 17:40:59,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:40:59" (1/1) ... [2022-07-22 17:40:59,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:40:59" (1/1) ... [2022-07-22 17:40:59,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:40:59,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:40:59,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:40:59,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:40:59,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:40:59" (1/1) ... [2022-07-22 17:40:59,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:40:59,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:40:59,521 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) [2022-07-22 17:40:59,538 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 [2022-07-22 17:40:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:40:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-22 17:40:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-22 17:40:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:40:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:40:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:40:59,600 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:40:59,602 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:40:59,680 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:40:59,685 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:40:59,685 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 17:40:59,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:40:59 BoogieIcfgContainer [2022-07-22 17:40:59,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:40:59,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:40:59,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:40:59,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:40:59,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:40:59" (1/3) ... [2022-07-22 17:40:59,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7cc79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:40:59, skipping insertion in model container [2022-07-22 17:40:59,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:40:59" (2/3) ... [2022-07-22 17:40:59,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7cc79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:40:59, skipping insertion in model container [2022-07-22 17:40:59,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:40:59" (3/3) ... [2022-07-22 17:40:59,694 INFO L111 eAbstractionObserver]: Analyzing ICFG afterrec-2.c [2022-07-22 17:40:59,706 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:40:59,706 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:40:59,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:40:59,753 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@57fda71e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37358b50 [2022-07-22 17:40:59,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:40:59,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:40:59,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-22 17:40:59,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:40:59,765 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:40:59,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONERROR_FUNCTION === [fErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:40:59,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:40:59,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1036188702, now seen corresponding path program 1 times [2022-07-22 17:40:59,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:40:59,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155040226] [2022-07-22 17:40:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:40:59,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:40:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:40:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 17:40:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:40:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:40:59,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:40:59,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155040226] [2022-07-22 17:40:59,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155040226] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:40:59,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741687473] [2022-07-22 17:40:59,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:40:59,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:40:59,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:40:59,938 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) [2022-07-22 17:40:59,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:40:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:40:59,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:40:59,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:41:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:41:00,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:41:00,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741687473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:41:00,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:41:00,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-07-22 17:41:00,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783346433] [2022-07-22 17:41:00,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:41:00,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:41:00,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:41:00,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:41:00,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:41:00,054 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2022-07-22 17:41:00,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:41:00,078 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-07-22 17:41:00,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:41:00,080 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 [2022-07-22 17:41:00,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:41:00,083 INFO L225 Difference]: With dead ends: 20 [2022-07-22 17:41:00,083 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 17:41:00,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:41:00,087 INFO L413 NwaCegarLoop]: 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 [2022-07-22 17:41:00,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 15 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:41:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 17:41:00,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 17:41:00,102 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) [2022-07-22 17:41:00,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 17:41:00,102 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-07-22 17:41:00,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:41:00,103 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 17:41:00,103 INFO L496 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) [2022-07-22 17:41:00,103 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 17:41:00,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 17:41:00,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 17:41:00,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 17:41:00,324 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,SelfDestructingSolverStorable0 [2022-07-22 17:41:00,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-22 17:41:00,333 INFO L899 garLoopResultBuilder]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2022-07-22 17:41:00,333 INFO L895 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (not (<= |f_#in~n| 2)) [2022-07-22 17:41:00,333 INFO L899 garLoopResultBuilder]: For program point fEXIT(lines 5 10) no Hoare annotation was computed. [2022-07-22 17:41:00,333 INFO L899 garLoopResultBuilder]: For program point L8-1(lines 5 10) no Hoare annotation was computed. [2022-07-22 17:41:00,333 INFO L899 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2022-07-22 17:41:00,334 INFO L902 garLoopResultBuilder]: At program point fENTRY(lines 5 10) the Hoare annotation is: true [2022-07-22 17:41:00,335 INFO L899 garLoopResultBuilder]: For program point fFINAL(lines 5 10) no Hoare annotation was computed. [2022-07-22 17:41:00,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-22 17:41:00,335 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-22 17:41:00,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-22 17:41:00,336 INFO L902 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: true [2022-07-22 17:41:00,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-22 17:41:00,336 INFO L899 garLoopResultBuilder]: For program point L13-1(lines 12 14) no Hoare annotation was computed. [2022-07-22 17:41:00,340 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 17:41:00,341 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 17:41:00,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 05:41:00 BoogieIcfgContainer [2022-07-22 17:41:00,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 17:41:00,344 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 17:41:00,344 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 17:41:00,344 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 17:41:00,345 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:40:59" (3/4) ... [2022-07-22 17:41:00,346 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 17:41:00,350 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2022-07-22 17:41:00,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-22 17:41:00,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-22 17:41:00,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 17:41:00,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 17:41:00,369 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 17:41:00,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 17:41:00,370 INFO L158 Benchmark]: Toolchain (without parser) took 1125.38ms. Allocated memory is still 121.6MB. Free memory was 87.8MB in the beginning and 54.7MB in the end (delta: 33.2MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2022-07-22 17:41:00,370 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory was 37.3MB in the beginning and 37.2MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 17:41:00,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.11ms. Allocated memory is still 121.6MB. Free memory was 87.6MB in the beginning and 95.9MB in the end (delta: -8.3MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-07-22 17:41:00,371 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.56ms. Allocated memory is still 121.6MB. Free memory was 95.9MB in the beginning and 94.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 17:41:00,372 INFO L158 Benchmark]: Boogie Preprocessor took 15.80ms. Allocated memory is still 121.6MB. Free memory was 94.5MB in the beginning and 93.9MB in the end (delta: 641.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 17:41:00,372 INFO L158 Benchmark]: RCFGBuilder took 205.27ms. Allocated memory is still 121.6MB. Free memory was 93.9MB in the beginning and 85.3MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 17:41:00,372 INFO L158 Benchmark]: TraceAbstraction took 655.52ms. Allocated memory is still 121.6MB. Free memory was 84.7MB in the beginning and 56.8MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-07-22 17:41:00,373 INFO L158 Benchmark]: Witness Printer took 25.11ms. Allocated memory is still 121.6MB. Free memory was 56.8MB in the beginning and 54.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 17:41:00,374 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory was 37.3MB in the beginning and 37.2MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.11ms. Allocated memory is still 121.6MB. Free memory was 87.6MB in the beginning and 95.9MB in the end (delta: -8.3MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.56ms. Allocated memory is still 121.6MB. Free memory was 95.9MB in the beginning and 94.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.80ms. Allocated memory is still 121.6MB. Free memory was 94.5MB in the beginning and 93.9MB in the end (delta: 641.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 205.27ms. Allocated memory is still 121.6MB. Free memory was 93.9MB in the beginning and 85.3MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 655.52ms. Allocated memory is still 121.6MB. Free memory was 84.7MB in the beginning and 56.8MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 25.11ms. Allocated memory is still 121.6MB. Free memory was 56.8MB in the beginning and 54.7MB 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: 9]: 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 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 6 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 1 NumberOfNonLiveVariables, 45 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 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! [2022-07-22 17:41:00,415 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