./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cf5a35873afe0e5012214bd680ff6c9f10002775e1599934b6c286bf71e0e3d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:47:54,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:47:54,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:47:54,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:47:54,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:47:54,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:47:54,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:47:54,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:47:54,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:47:54,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:47:54,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:47:54,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:47:54,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:47:54,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:47:54,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:47:54,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:47:54,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:47:54,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:47:54,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:47:54,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:47:54,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:47:54,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:47:54,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:47:54,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:47:54,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:47:54,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:47:54,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:47:54,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:47:54,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:47:54,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:47:54,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:47:54,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:47:54,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:47:54,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:47:54,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:47:54,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:47:54,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:47:54,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:47:54,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:47:54,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:47:54,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:47:54,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-23 01:47:54,446 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:47:54,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:47:54,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:47:54,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 01:47:54,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:47:54,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:47:54,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:47:54,449 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:47:54,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:47:54,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:47:54,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:47:54,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:47:54,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:47:54,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:47:54,450 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:47:54,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:47:54,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:47:54,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:47:54,451 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 01:47:54,451 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 01:47:54,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:47:54,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:47:54,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:47:54,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:47:54,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:47:54,453 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 01:47:54,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:47:54,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:47:54,453 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cf5a35873afe0e5012214bd680ff6c9f10002775e1599934b6c286bf71e0e3d [2021-11-23 01:47:54,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:47:54,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:47:54,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:47:54,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:47:54,759 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:47:54,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2021-11-23 01:47:54,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/data/67a95d16b/888449e7db324b9aa20b675cf1b4eff8/FLAGaf3426386 [2021-11-23 01:47:55,358 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:47:55,358 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2021-11-23 01:47:55,366 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/data/67a95d16b/888449e7db324b9aa20b675cf1b4eff8/FLAGaf3426386 [2021-11-23 01:47:55,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/data/67a95d16b/888449e7db324b9aa20b675cf1b4eff8 [2021-11-23 01:47:55,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:47:55,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:47:55,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:47:55,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:47:55,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:47:55,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:47:55" (1/1) ... [2021-11-23 01:47:55,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c456a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:55, skipping insertion in model container [2021-11-23 01:47:55,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:47:55" (1/1) ... [2021-11-23 01:47:55,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:47:55,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:47:55,930 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c[354,367] [2021-11-23 01:47:55,935 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c[442,455] [2021-11-23 01:47:55,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:47:55,949 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:47:55,966 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c[354,367] [2021-11-23 01:47:55,968 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c[442,455] [2021-11-23 01:47:55,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:47:55,983 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:47:55,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:55 WrapperNode [2021-11-23 01:47:55,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:47:55,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:47:55,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:47:55,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:47:55,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:55" (1/1) ... [2021-11-23 01:47:56,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:55" (1/1) ... [2021-11-23 01:47:56,016 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2021-11-23 01:47:56,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:47:56,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:47:56,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:47:56,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:47:56,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:55" (1/1) ... [2021-11-23 01:47:56,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:55" (1/1) ... [2021-11-23 01:47:56,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:55" (1/1) ... [2021-11-23 01:47:56,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:55" (1/1) ... [2021-11-23 01:47:56,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:55" (1/1) ... [2021-11-23 01:47:56,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:55" (1/1) ... [2021-11-23 01:47:56,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:55" (1/1) ... [2021-11-23 01:47:56,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:47:56,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:47:56,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:47:56,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:47:56,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:55" (1/1) ... [2021-11-23 01:47:56,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:47:56,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 01:47:56,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 01:47:56,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 01:47:56,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:47:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-11-23 01:47:56,132 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-11-23 01:47:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:47:56,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:47:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:47:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2021-11-23 01:47:56,133 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2021-11-23 01:47:56,193 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:47:56,195 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:47:56,283 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:47:56,294 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:47:56,295 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 01:47:56,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:47:56 BoogieIcfgContainer [2021-11-23 01:47:56,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:47:56,299 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 01:47:56,299 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 01:47:56,309 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 01:47:56,309 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:47:56" (1/1) ... [2021-11-23 01:47:56,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:47:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:47:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 18 states and 20 transitions. [2021-11-23 01:47:56,384 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-11-23 01:47:56,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 01:47:56,389 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:47:56,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:47:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:47:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:47:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:47:56,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 19 states and 20 transitions. [2021-11-23 01:47:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-23 01:47:56,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 01:47:56,760 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:47:56,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:47:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:47:56,775 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 01:47:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:47:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:47:56,826 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 01:47:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:47:56,844 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2021-11-23 01:47:56,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 01:47:56 ImpRootNode [2021-11-23 01:47:56,870 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 01:47:56,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:47:56,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:47:56,871 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:47:56,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:47:56" (3/4) ... [2021-11-23 01:47:56,874 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 01:47:56,943 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 01:47:56,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:47:56,945 INFO L158 Benchmark]: Toolchain (without parser) took 1221.94ms. Allocated memory was 81.8MB in the beginning and 104.9MB in the end (delta: 23.1MB). Free memory was 48.2MB in the beginning and 49.0MB in the end (delta: -802.6kB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2021-11-23 01:47:56,946 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory was 52.6MB in the beginning and 52.5MB in the end (delta: 27.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:47:56,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.31ms. Allocated memory was 81.8MB in the beginning and 104.9MB in the end (delta: 23.1MB). Free memory was 48.1MB in the beginning and 81.1MB in the end (delta: -33.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 01:47:56,948 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.30ms. Allocated memory is still 104.9MB. Free memory was 81.1MB in the beginning and 80.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:47:56,949 INFO L158 Benchmark]: Boogie Preprocessor took 29.96ms. Allocated memory is still 104.9MB. Free memory was 80.0MB in the beginning and 79.0MB in the end (delta: 964.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:47:56,950 INFO L158 Benchmark]: RCFGBuilder took 249.24ms. Allocated memory is still 104.9MB. Free memory was 79.0MB in the beginning and 70.0MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 01:47:56,951 INFO L158 Benchmark]: CodeCheck took 571.89ms. Allocated memory is still 104.9MB. Free memory was 70.0MB in the beginning and 50.6MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-23 01:47:56,952 INFO L158 Benchmark]: Witness Printer took 72.72ms. Allocated memory is still 104.9MB. Free memory was 50.6MB in the beginning and 49.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:47:56,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 3 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 10 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] CALL f(4) VAL [\old(n)=4] [L9] COND FALSE !(n<3) [L10] n-- VAL [\old(n)=4, n=3] [L11] CALL f2(n) VAL [\old(n)=3] [L16] COND FALSE !(n<3) [L17] n-- VAL [\old(n)=3, n=2] [L18] CALL f(n) VAL [\old(n)=2] [L9] COND TRUE n<3 VAL [\old(n)=2, n=2] [L18] RET f(n) VAL [\old(n)=3, n=2] [L19] reach_error() VAL [\old(n)=3, n=2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory was 52.6MB in the beginning and 52.5MB in the end (delta: 27.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.31ms. Allocated memory was 81.8MB in the beginning and 104.9MB in the end (delta: 23.1MB). Free memory was 48.1MB in the beginning and 81.1MB in the end (delta: -33.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.30ms. Allocated memory is still 104.9MB. Free memory was 81.1MB in the beginning and 80.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.96ms. Allocated memory is still 104.9MB. Free memory was 80.0MB in the beginning and 79.0MB in the end (delta: 964.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 249.24ms. Allocated memory is still 104.9MB. Free memory was 79.0MB in the beginning and 70.0MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 571.89ms. Allocated memory is still 104.9MB. Free memory was 70.0MB in the beginning and 50.6MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 72.72ms. Allocated memory is still 104.9MB. Free memory was 50.6MB in the beginning and 49.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2021-11-23 01:47:57,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b15fd5-e77c-40d2-b814-91d7452ad8f9/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE